Quena

2021-06-14T15:36:17Z

Njonson19:

{{#set:
|Is tv=True
|Has name={{PAGENAME}}
|Has icon=File:Quena2_20.png
|Has icondesc=quena Icon
|Has image=File:Quena2_20.png
|Has description=quena
|Uses software=Solidworks

}}

[[{{#show: {{FULLPAGENAME}}|?Has image|link=none}}|375px|thumb|upright=1.5|{{#show: {{FULLPAGENAME}}|?Has imagedesc}}]]

[[{{#show:{{FULLPAGENAME}}|?Has icon|link=none}}|100px|left|top|{{#show: {{FULLPAGENAME}}|?Has icondesc}}]]

In this TV, we will be creating a quena.

== Bill of Materials ==

* 1/2" PVC
* 3D printed parts

==CAD==

Step 1: Open SolidWorks 2020, and select a new part. Don't forget to save your file frequently as you go. In the bottom-right corner of your Solidworks window, change the units from IPS to MMGS (milimeter, gram, second)

Step 2: Select the Front Plane in the design tree (the left column on your screen) to begin your sketch. Click on the Sketch tab above and click Sketch.

[[Image:Quena_1.png|500px]]

Step 3: Draw out the shape below. Start the lower left corner on the origin (the red arrows), and make sure the lines snap to horizontal and vertical.
Using the smart dimension tool, which you can get either on the menu at top, or by holding your right mouse button and dragging up.
If done correctly, the entire sketch should be black, indicating that it is fully defined.

[[Image:Quena_2.png|500px]]

Step 4: In the top left corner, click Exit Sketch (your sketch should turn light grey). Click on the Features tab and select the Revolved Boss/Base option. Click on the "axis of revolution" box, and select the bottom line.
The preview should match the picture below.

Click the green checkmark in the left column if everything looks good.

[[Image:Quena_3.png|500px]]

Step 5: Select the Front Plane in the design tree (the left column on your screen) to begin a new sketch. Click on the Sketch tab above and click Sketch.

[[Image:Quena_4.png|500px]]

Step 6: On the new sketch, select the ‘Ellipse’ option to draw the same shape as the screenshot. Place the corner of the eclipse on the corner of the object, and add dimensions to constrain it.

[[Image:Quena_4.5.png|500px]]

Step 7: Click on the Features tab and select the ‘Extruded Cut’ option. Select ‘Through All- Both’. Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena_5.png|500px]]

Step 8: Right Click the ‘Blue Circle’ (see screenshot) on the object and select ‘normal to’ and again select ‘new sketch’ option after.

Step 8: Select the round end face, and create a new sketch. To make that sketch become parallel to the screen, press space, and click on the appropriate face of the cube.

[[Image:Quena_6.png|500px]]

Step 9: In the New Sketch draw a circle, with it's center on the origin. Add a dimension, and set it's value to 12.6mm

[[Image:Quena_7.png|500px]]

Step 10: Nest, use the line tool to draw a rectangle as shown in the picture. Make sure the ends of the top line are on the circle, and that the line is horizontal.
Draw the others to form a rectangle.

[[Image:Quena_8.png|400px]]
[[Image:Quena_9.png|400px]]

Next, select the "trim entities" tool on the top bar. Select "trim to closest", and make sure "keep trimmed entities as construction geometry" is checked.

[[Image:Quena_10.png|400px]]

Trim the 2 inside lines, so that the solid lines form 1 loop.

[[Image:Quena_11.png|400px]]

Step 12: Click on the Features tab and select the ‘Extruded Cut’ option. under "direction 1", select "up to surface" for the depth of the cut. Select the pink face as the surface.

[[Image:Quena_12.png|400px]]

Step 13: Next, create a new sketch on that pink face. on this face, draw 2 lines vertically down from the sides of the notch, and then connect them with 2 arcs. The arc tool is circled in red in the upper left corner.
Dimension the arcs as shown.

[[Image:Quena_13.png|400px]]

Step 14: Next, use the trim tool from earlier to reduce the sketch down to a single loop.
For the upper parts of the 2 vertical lines, trim them to construction geometry. This preserves the relation between the lines and the notch.
For the lower part of the lines, uncheck the "keep trimmed entities as construction geometry" box, and it will delete the overhanging part of the line.

[[Image:Quena_14.png|400px]]

Step 15: Now, extrude cut with this sketch. the cut should go all the way through

[[Image:Quena_15.png|400px]]

And you're done!

==3D printing==

For instructions on using the 3D printers, see the prusa page [[Prusa_3D_Printer]]

The part prints best if printed upright, and with supports under the overhang.

[[Image:Quena_16.png|500px]]

==Body Cad==

Step 1: Open SolidWorks 2020, and select a new part. Don't forget to save your file frequently as you go. In the bottom-right corner of your Solidworks window, change the units to CGS (Centimeter, gram, second). Select the Right Plane in the design tree (the left column on your screen) to begin your sketch. Click on the Sketch tab above and click Sketch.

[[Image:Quena2_1.png|500px]]

Step 2: Make a horizontal line starting from the origin. Then use the smart dimension tool to make it 40cm long. Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_2.png|500px]]

Step 3: Select the Front Plane in the design tree (the left column on your screen) to begin your new sketch. Click on the Sketch tab above and click Sketch.

[[Image:Quena2_3.png|500px]]

Step 4: Select the ‘Circle’ option to draw a circle starting at the origin. Using the ‘smart dimension’ tool make the radius of the circle the same as the screenshot below. Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_4.png|500px]]

Step 5: Click on the Features tab and select the ‘Sweep Boss/Base’ option. Under ‘Profile and Path’ select ‘sketch profile’ and for the end circle (blue color) select the sketch of the circle (sketch2). For the line (pink color) select the straight line sketch (sketch 1). In addition, add the ‘thin feature’. Select one direction and make the thickness of it be 0.29 cm as shown in the screenshot. Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_5.png|500px]]

Step 6: Select the Right Plane in the design tree (the left column on your screen) to begin your new sketch.

[[Image:Quena2_6.png|500px]]

Step 7: Start drawing circles with the ‘circle’ option. Little advice, make sure the center of your circles are aligned with the origin (you will see blue dotted lines). Create 6 circles in the same sketch.

[[Image:Quena2_7.png|500px]]

Step 8: Using the ‘Smart Dimension’ option make the diameters of the circles the same as shown in the screenshot below. In addition, make the distances starting from the origin point to each center of a circle identical as the screenshot. Click the green checkmark in the left column if everything looks good like the picture below.

[[Image:Quena2_8.png|500px]]

Step 9: Click on the Features tab and select the ‘Extruded Cut’ option. Select ‘Up to next’ under direction1’. If the grey arrow is pointing the opposite side, you can always switch direction by clicking the icon next to the ‘Up to next’. Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_9.png|500px]]

Step 10: Select the Right Plane in the design tree (the left column on your screen) to start your new sketch. Click on the Sketch tab above and click Sketch. We will be using the ‘circle’ option.

[[Image:Quena2_10.png|500px]]

Step 11: Draw a circle making sure the center of your circles are aligned with the origin (you will see blue dotted lines). See image below.

[[Image:Quena2_11.png|500px]]

Step 12: Using the ‘smart dimension’ option, make the distance starting from the origin point to the center of the circle identical as the screenshot. Also, make the diameter of the circle the same as shown below. Click the green checkmark in the left column if everything looks good.

[[Image:Quena2_12.png|500px]]

Step 12: Click on the Features tab and select the ‘Extruded Cut’ option. Select ‘Up to next’ under direction1’. If the grey arrow is pointing the opposite side, you can always switch direction by clicking the icon next to the ‘Up to next’. Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_13.png|500px]]

Step 14: Select the Front Plane in the design tree (the left column on your screen) to start your new sketch. Click on the Sketch tab above and click Sketch.

[[Image:Quena2_14.png|500px]]

Step 14: Make a vertical centerline using the ‘centerline’ option. This can be found by clicking on the arrow next to the line icon. Then use the ‘line’ option to draw the same line as the screenshot (outer circle). Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_15.png|500px]]

Step 16: Having the last Sketch selected, go under ‘Features’ and select ‘Reference Geometry’. Once you click on the little triangle to see sub-options, and select ‘plane’. You just created a plane!

[[Image:Quena2_16.png|500px]]

Step 17: At this point, we need to make the plane fully defined. First, under ‘first reference’ select the vertical line you just created in the last step. Second, under ‘second reference’ select the area between the 2 circles (See screenshot - purple area). Now, right under the coincident option, you will see an angle symbol. In that box type either “26 deg” or “154 deg”. This will depend on which side the plane is leaning. Ideally, we want to have a small angle close to the top of the quena which is where the 6 holes are at! Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_17.png|500px]]
[[Image:Quena2_17.5.png|500px]]

Step 18: On that plane you just created select ‘normal to’ and click on the Sketch tab above and click Sketch to create a new one. On the new sketch, select the ‘Ellipse’ option to draw the same shape as the screenshot. Make sure the oval has the same dimension given in the screenshot.

[[Image:Quena2_18.png|500px]]

Step 19: Click on the Features tab and select the ‘Extruded Cut’ option. Select ‘All Through’ under direction1’. If the grey arrow is pointing the opposite side, you can always switch direction by clicking the icon next to the ‘Up to next’. Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_19.png|500px]]

Step 20: You did it! Save your work! You should now have something that looks like the screenshot below.

[[Image:Quena2_20.png|500px]]

Electronic keyboard

2021-06-12T00:29:53Z

Njonson19:

{{#set:
|Is tv=True
|Has name={{PAGENAME}}
|Has icon=File:final_keyboard_assembley.jpg
|Has icondesc=Electronic Keyboard Icon
|Has image=File:final_keyboard_assembley.jpg
|Has description=Electronic Keyboard

}}
[[{{#show: {{FULLPAGENAME}}|?Has image|link=none}}|375px|thumb|upright=1.5|{{#show: {{FULLPAGENAME}}|?Has imagedesc}}]]

[[{{#show:{{FULLPAGENAME}}|?Has icon|link=none}}|100px|left|top|{{#show: {{FULLPAGENAME}}|?Has icondesc}}]]

In this TV, we will be creating an electronic keyboard.

== Bill of Materials ==

* Keyboard PCB
* Keyboard parts kit
* printed keyboard caps
* Solder

==CAD==

<div style= "transform: rotate(90deg);">
My paragraph
</div>

For this TV, the cad has been done for you, as this is more of an exercise in assembly and programming than in design.

Here is the Schematic used for this build:

[[Image:midi_sch.png|500px]]

The processor is an ATmega328, the same processor as is used on the Arduino Uno. There are 8 button inputs, with pulldown resistors on the signal lines, and a speaker amplifier to drive a small speaker.

This schematic was used to create the following PCB:

[[Image:midi_pcb.png|500px]]

The cad file is sent to a manufacturer, and they send back a board that looks like this:

[[Image:electronic_keyboard_pcb.jpg|500px]]

Using this board, we will assemble the circuit.
This build makes heavy use of soldering, so check out the soldering wiki page: [[Soldering_Irons]]

==ASSEMBLY==

parts:

[[Image:Electronic keyboard parts.jpg|500px]]

To start off, let's solder the resistors. There are 4 resistor values used on the board; 10,000 ohms (10K), 1,000 ohms (1K), 100 ohms (100), and 560 ohms (560).
The resistor values are coded by colored stripes on the side of the resistor; the following chart describes this code:

[[Image:Resistor_color_code.png|300px]]

To solder the resistors, first bend the legs over, and thread the wires through the holes in the board.

[[Image:resistor_through_hole_board.jpg|500px]]

on the back, bend them out a little to hold it in place, and then solder the connections.

[[Image:resistor_soldered.jpg|500px]]

Then, clip the leads back to the top of the solder joint

[[Image:resistor_clipped.jpg|500px]]

Repeat for all resistors.

[[Image:populated_resistors.jpg|500px]]

Next, let's solder the ceramic capacitors. they are the small 2 leaded yellow parts.

The larger one is a 0.1uF value, and the 2 smaller ones are 18pF.

[[Image:resistor_and_cap.jpg|500px]]

next, there is 1 electrolytic capacitor to add. The larger one on the right isn't used in this version of the circuit.
Electrolytic capacitors are polarized, which means that they need to be connected the right direction. Match the side of the part with the stripe with the white side of the circle on the board.

[[Image:board_with_electrolytic_.jpg|500px]]

Next up, we have the crystal. Inside this part there is a small piece of quartz, which resonates at 16 million times a second. This is used to drive the system clock.

[[Image:More_parts_1.jpeg|500px]]

Next up, we have the reset button and the volume control resistor.

[[Image:More_parts_2.jpg|500px]]

Next, the LED get's soldered in.
LED's are polarity sensitive, so if they are in backwards, they will not work.
align the flat side of the LED with the flat side of the white circle on the board.

[[Image:LED_alignment.jpg|500px]]

Next, we can solder the transistor. This amplifies the signal going to the speaker, because the processor itself can't provide enough power to drive it.

Align the flat side with the flat side of the symbol on the board.

[[Image:transistor_speaker.jpg|500px]]

Next, we solder in the socket for the processor.
This part has a large number of joints, so make sure it's in right before you start soldering!
On top, one end has a small notch in it. Align this with the matching symbol on the board.

[[Image:socket_top_side.jpg|500px]]

On the bottom, fold over 2 opposite corner pins to hold it in place.

[[Image:socket_corner_pins.jpg|500px]]

Making sure it is in all the way, solder these 2 corner pins.
Double check that the socket is all the way in, and oriented right. If it is, solder the rest of the pins.

[[Image:final_socket.jpg|500px]]

Next, we need to mount the programming port. First, solder the header pins in place

[[Image:header_solder_with_angle.jpg|500px]]

Note that this part can be tricky to solder straight. The easiest way is to get 1 pin soldered, even if its' crocked.
Then, hold the pins pressing them into the board, and re-melt that solder joint. '
Make sure your finger isn't on the 1 pin that you are soldering to, as it will get hot fast.

[[Image:finger_holding_header_crocked.jpg|300px]] [[Image:header_straight_soldered.jpg|300px]]

After this, the header should be lined up.

Next, se need to solder the USB Serial adapter onto the header pins. This board converts the serial protocol that the processor speaks to usb.
This converter chip is a fine pitch surface mount part, so we have it on a premade board. With practice, it is possible to solder parts this small though!

Just like soldering the header, solder 1 pin in place, align the module, and then solder the rest of the pins.
Make sure the board isn't at an angle, because we need to leave room for the USB cable to plug in.

[[Image:USB_serial_converter.jpg|500px]]

Next, we need to attach the speaker.
Go to the wire cart, and grab 2 lengths of stranded wire, each about 4 inches long. Strip the ends of both using the stripping tool at the soldering station, and then twist the wires together.
Solder 1 end of the wires to the speaker, and the other ends to the board. It doesn't matter which connection goes to which pad, it works either direction.

[[Image:speaker_wiring.jpg|500px]]

The last thing to solder is a bypass jumper where the large capacitor was. An easy way to do this is to use one of the cut off leads from the resistors.
Fold it into a U shape, feed the wires through the holes, and solder it in place.

[[Image:capacitor_bypas.jpg|500px]]

Now just add the keycaps, and were done with the hardware!

[[Image:final_keyboard_assembley.jpg|500px]]

==Software==

For the code, we will be using the Arduino IDE. It's on the lab computers, or it's free to download.

In the main window, copy this code:

[[Media:Tone_arduino.ino]]

then, create a second tab, and name it pitches.h

in it, copy this:

[[Media:pitches.h]]

Quena

2021-06-12T00:29:16Z

Njonson19:

{{#set:
|Is tv=True
|Has name={{PAGENAME}}
|Has icon=File:mood_lamp_icon.png
|Has icondesc=Mood Lamp Icon
|Has image=File:mood_lamp_image.png
|Has description=Mood Lamp
|Uses equipment=Table Saw
|Uses equipment=Planer
|Uses software=Solidworks

}}

[[{{#show: {{FULLPAGENAME}}|?Has image|link=none}}|375px|thumb|upright=1.5|{{#show: {{FULLPAGENAME}}|?Has imagedesc}}]]

[[{{#show:{{FULLPAGENAME}}|?Has icon|link=none}}|100px|left|top|{{#show: {{FULLPAGENAME}}|?Has icondesc}}]]

In this TV, we will be creating a quena.

== Bill of Materials ==

* 1/2" PVC
* 3D printed parts

==CAD==

Step 1: Open SolidWorks 2020, and select a new part. Don't forget to save your file frequently as you go. In the bottom-right corner of your Solidworks window, change the units from IPS to MMGS (milimeter, gram, second)

Step 2: Select the Front Plane in the design tree (the left column on your screen) to begin your sketch. Click on the Sketch tab above and click Sketch.

[[Image:Quena_1.png|500px]]

Step 3: Draw out the shape below. Start the lower left corner on the origin (the red arrows), and make sure the lines snap to horizontal and vertical.
Using the smart dimension tool, which you can get either on the menu at top, or by holding your right mouse button and dragging up.
If done correctly, the entire sketch should be black, indicating that it is fully defined.

[[Image:Quena_2.png|500px]]

Step 4: In the top left corner, click Exit Sketch (your sketch should turn light grey). Click on the Features tab and select the Revolved Boss/Base option. Click on the "axis of revolution" box, and select the bottom line.
The preview should match the picture below.

Click the green checkmark in the left column if everything looks good.

[[Image:Quena_3.png|500px]]

Step 5: Select the Front Plane in the design tree (the left column on your screen) to begin a new sketch. Click on the Sketch tab above and click Sketch.

[[Image:Quena_4.png|500px]]

Step 6: On the new sketch, select the ‘Ellipse’ option to draw the same shape as the screenshot. Place the corner of the eclipse on the corner of the object, and add dimensions to constrain it.

[[Image:Quena_4.5.png|500px]]

Step 7: Click on the Features tab and select the ‘Extruded Cut’ option. Select ‘Through All- Both’. Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena_5.png|500px]]

Step 8: Right Click the ‘Blue Circle’ (see screenshot) on the object and select ‘normal to’ and again select ‘new sketch’ option after.

Step 8: Select the round end face, and create a new sketch. To make that sketch become parallel to the screen, press space, and click on the appropriate face of the cube.

[[Image:Quena_6.png|500px]]

Step 9: In the New Sketch draw a circle, with it's center on the origin. Add a dimension, and set it's value to 12.6mm

[[Image:Quena_7.png|500px]]

Step 10: Nest, use the line tool to draw a rectangle as shown in the picture. Make sure the ends of the top line are on the circle, and that the line is horizontal.
Draw the others to form a rectangle.

[[Image:Quena_8.png|400px]]
[[Image:Quena_9.png|400px]]

Next, select the "trim entities" tool on the top bar. Select "trim to closest", and make sure "keep trimmed entities as construction geometry" is checked.

[[Image:Quena_10.png|400px]]

Trim the 2 inside lines, so that the solid lines form 1 loop.

[[Image:Quena_11.png|400px]]

Step 12: Click on the Features tab and select the ‘Extruded Cut’ option. under "direction 1", select "up to surface" for the depth of the cut. Select the pink face as the surface.

[[Image:Quena_12.png|400px]]

Step 13: Next, create a new sketch on that pink face. on this face, draw 2 lines vertically down from the sides of the notch, and then connect them with 2 arcs. The arc tool is circled in red in the upper left corner.
Dimension the arcs as shown.

[[Image:Quena_13.png|400px]]

Step 14: Next, use the trim tool from earlier to reduce the sketch down to a single loop.
For the upper parts of the 2 vertical lines, trim them to construction geometry. This preserves the relation between the lines and the notch.
For the lower part of the lines, uncheck the "keep trimmed entities as construction geometry" box, and it will delete the overhanging part of the line.

[[Image:Quena_14.png|400px]]

Step 15: Now, extrude cut with this sketch. the cut should go all the way through

[[Image:Quena_15.png|400px]]

And you're done!

==3D printing==

For instructions on using the 3D printers, see the prusa page [[Prusa_3D_Printer]]

The part prints best if printed upright, and with supports under the overhang.

[[Image:Quena_16.png|500px]]

==Body Cad==

Step 1: Open SolidWorks 2020, and select a new part. Don't forget to save your file frequently as you go. In the bottom-right corner of your Solidworks window, change the units to CGS (Centimeter, gram, second). Select the Right Plane in the design tree (the left column on your screen) to begin your sketch. Click on the Sketch tab above and click Sketch.

[[Image:Quena2_1.png|500px]]

Step 2: Make a horizontal line starting from the origin. Then use the smart dimension tool to make it 40cm long. Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_2.png|500px]]

Step 3: Select the Front Plane in the design tree (the left column on your screen) to begin your new sketch. Click on the Sketch tab above and click Sketch.

[[Image:Quena2_3.png|500px]]

Step 4: Select the ‘Circle’ option to draw a circle starting at the origin. Using the ‘smart dimension’ tool make the radius of the circle the same as the screenshot below. Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_4.png|500px]]

Step 5: Click on the Features tab and select the ‘Sweep Boss/Base’ option. Under ‘Profile and Path’ select ‘sketch profile’ and for the end circle (blue color) select the sketch of the circle (sketch2). For the line (pink color) select the straight line sketch (sketch 1). In addition, add the ‘thin feature’. Select one direction and make the thickness of it be 0.29 cm as shown in the screenshot. Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_5.png|500px]]

Step 6: Select the Right Plane in the design tree (the left column on your screen) to begin your new sketch.

[[Image:Quena2_6.png|500px]]

Step 7: Start drawing circles with the ‘circle’ option. Little advice, make sure the center of your circles are aligned with the origin (you will see blue dotted lines). Create 6 circles in the same sketch.

[[Image:Quena2_7.png|500px]]

Step 8: Using the ‘Smart Dimension’ option make the diameters of the circles the same as shown in the screenshot below. In addition, make the distances starting from the origin point to each center of a circle identical as the screenshot. Click the green checkmark in the left column if everything looks good like the picture below.

[[Image:Quena2_8.png|500px]]

Step 9: Click on the Features tab and select the ‘Extruded Cut’ option. Select ‘Up to next’ under direction1’. If the grey arrow is pointing the opposite side, you can always switch direction by clicking the icon next to the ‘Up to next’. Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_9.png|500px]]

Step 10: Select the Right Plane in the design tree (the left column on your screen) to start your new sketch. Click on the Sketch tab above and click Sketch. We will be using the ‘circle’ option.

[[Image:Quena2_10.png|500px]]

Step 11: Draw a circle making sure the center of your circles are aligned with the origin (you will see blue dotted lines). See image below.

[[Image:Quena2_11.png|500px]]

Step 12: Using the ‘smart dimension’ option, make the distance starting from the origin point to the center of the circle identical as the screenshot. Also, make the diameter of the circle the same as shown below. Click the green checkmark in the left column if everything looks good.

[[Image:Quena2_12.png|500px]]

Step 12: Click on the Features tab and select the ‘Extruded Cut’ option. Select ‘Up to next’ under direction1’. If the grey arrow is pointing the opposite side, you can always switch direction by clicking the icon next to the ‘Up to next’. Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_13.png|500px]]

Step 14: Select the Front Plane in the design tree (the left column on your screen) to start your new sketch. Click on the Sketch tab above and click Sketch.

[[Image:Quena2_14.png|500px]]

Step 14: Make a vertical centerline using the ‘centerline’ option. This can be found by clicking on the arrow next to the line icon. Then use the ‘line’ option to draw the same line as the screenshot (outer circle). Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_15.png|500px]]

Step 16: Having the last Sketch selected, go under ‘Features’ and select ‘Reference Geometry’. Once you click on the little triangle to see sub-options, and select ‘plane’. You just created a plane!

[[Image:Quena2_16.png|500px]]

Step 17: At this point, we need to make the plane fully defined. First, under ‘first reference’ select the vertical line you just created in the last step. Second, under ‘second reference’ select the area between the 2 circles (See screenshot - purple area). Now, right under the coincident option, you will see an angle symbol. In that box type either “26 deg” or “154 deg”. This will depend on which side the plane is leaning. Ideally, we want to have a small angle close to the top of the quena which is where the 6 holes are at! Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_17.png|500px]]
[[Image:Quena2_17.5.png|500px]]

Step 18: On that plane you just created select ‘normal to’ and click on the Sketch tab above and click Sketch to create a new one. On the new sketch, select the ‘Ellipse’ option to draw the same shape as the screenshot. Make sure the oval has the same dimension given in the screenshot.

[[Image:Quena2_18.png|500px]]

Step 19: Click on the Features tab and select the ‘Extruded Cut’ option. Select ‘All Through’ under direction1’. If the grey arrow is pointing the opposite side, you can always switch direction by clicking the icon next to the ‘Up to next’. Click the green checkmark in the left column if everything looks good like the screenshot.

[[Image:Quena2_19.png|500px]]

Step 20: You did it! Save your work! You should now have something that looks like the screenshot below.

[[Image:Quena2_20.png|500px]]

Slide Whistle

2021-06-11T23:08:41Z

Njonson19:

{{#set:
|Is tv=True
|Has name={{PAGENAME}}
|Has icon=File:Slide_cad_27.png
|Has icondesc=Slide Whistle Icon
|Has image=File:Slide_cad_27.png
|Has description=Slide Whistle
|Uses software=Solidworks

}}

[[{{#show: {{FULLPAGENAME}}|?Has image|link=none}}|375px|thumb|upright=1.5|{{#show: {{FULLPAGENAME}}|?Has imagedesc}}]]

[[{{#show:{{FULLPAGENAME}}|?Has icon|link=none}}|100px|left|top|{{#show: {{FULLPAGENAME}}|?Has icondesc}}]]

In this TV, we will be creating a slide whistle.

== Bill of Materials ==

* ½” PVC
* ½” PVC cap with hole in end
* ½” dowel
* ½” delrin plug
* Welding rod

==CAD==

The body of the whistle is made from ½ inch schedule 40 PVC pipe.

To model this, first create a sketch on the front plane. In this sketch, draw 2 circles. The outer diameter of the pipe is 0.85”, and the inner diameter is 0.62”.
Make sure the circles are centered on the origin.

[[Image:Slide_cad_1.png|500px]]

Then, extrude the profile to create the pipe. A length of 10.5 inches works well.

[[Image:slide_cad_2.png|500px]]

Next up, we need to create the notch that allows the whistle to produce sound.
Start a new sketch on the right plane. In order to see the plane face on, hit space, and click the side of the cube that is parallel to the sketch.

On this plane, first draw a line from the origin back into the pipe. Right click on it and set it to be construction geometry. This means that Solidworks will ignore the line when making the cut; but we can still measure off of it.

[[Image:slide_cad_3.png|500px]]

Next, draw a triangle using the line tool. The top line should be horizontal, and the vertical line should be, well, vertical.

Lock these lines to being horizontal and vertical by right clicking on them, and clicking either make horizontal or make vertical.

[[Image:slide_cad_4.png|500px]]

Next, insert dimensions to define the location and size of the cut. It should be 1.25” from the beginning of the pipe, and 0.2” from the center line.

[[Image:slide_cad_5.png|500px]]

Once all dimensions are inserted, the triangle’s lines should all be black. This indicates that the sketch is fully defined. We can now use the extrude cut tool to turn the sketch into the notch.

In the direction box, select the ```Through All – Both ``` option. This cuts from both sides of the sketch.

[[Image:slide_cad_6.png|500px]]

And there we go! Lastly, let’s set the material of the object to PVC. Do this by right clicking on the body in the feature tree and clicking on “material” > “edit material”. In the window that opens, click on the “plastics” folder. In this folder, find “PVC Rigid”. Click on it, and then click apply, then close.

[[Image:slide_cad_7.png|250px]]
[[Image:slide_cad_8.png|200px]]
[[Image:slide_cad_9.png|450px]]

The pipe should now be white, just like real PVC!

[[Image:slide_cad_10.png|500px]]

Next, we need to model the wooden plug that sits inside the end of the whistle.

Click on sketch to create a new sketch and place it on the end of the whistle. Draw a circle just a little smaller than the inner diameter of the PVC, and set it’s diameter to 0.6”.

[[Image:slide_cad_11.png|500px]]

To create the flat top of the peg, draw a line across the top of the circle. Place both the beginning and the end of the line on the circle. Next set the line to horizontal, as shown above. Add a dimension from the origin to the line and set it to 0.25”. All lines in the sketch should be black.

[[Image:slide_cad_12.png|500px]]

Next, remove the curve above the line using the “trim entities” tool. Click the tool, and click the top of the circle. That part of the circle should now be gone, and the sketch should be a single loop of lines.

[[Image:slide_cad_13.png|500px]]
[[Image:slide_cad_14.png|500px]]

Next, we can extrude the sketch to form the plug. Click on extrude, and set the length to 1.25”.
As this is a separate part, uncheck “merge result” in the extrude options. This causes the extrude to create a separate body, which we can set to be a different material.

[[Image:slide_cad_15.png|500px]]

We have the plug!
At this point, the plug is the default grey. Let’s fix that.
Under the bodies folder in the feature tree, there should now be 2 bodies. The second one is our plug.
Using the same process as before, set it’s material to be wood. There is a woods folder just like a plastics folder. Open it and chose pine.

[[Image:slide_cad_16.png|500px]]

Now we have a wooden plug!

Next, let’s model the cap on the end.

Create a sketch on the right plane, and go parallel to it (hit space, and click the cube’s side).
Draw the shape of the cap, using the dimensions below. The construction line (dashed) in the middle is connected to the origin at the other end of the pipe and is horizontal. It’s needed in the next step, so remember to include it.

[[Image:slide_cad_17.png|500px]]

To turn this into the cap, a revolve is used. This spins the sketch around an axis to create a solid. In this case, the construction line is that axis. Select the revolve option, and if it does not automatically detect the center line (it did for me), click on the “axis of revolution” box and then select the line.

[[Image:slide_cad_18.png|500px]]

To round off the edges of the cap, let’s add a filet. Filets are an amazingly simple way to turn sharp corners into rounded edges. to add one, first click on the fillet tool, and then select the edge that you want to round off.

[[Image:slide_cad_19.png|500px]]

And we have a cap!

Once again, it’s a new body, so set it’s material to PVC just like the pipe body

The last thing to make is the slider that makes this a slide whistle.

Start by creating a sketch on the right plane. On the sketch, draw a line that represents the path that the rod will follow. To make the curve on the end, use the centerpoint arc tool.

[[Image:slide_cad_20.png|500px]]
[[Image:slide_cad_21.png|500px]]

Next, we need to draw the outer shape of the rod. Create another sketch on the end of the cap and draw a 0.1” circle on the origin. Exit this sketch as well.

[[Image:slide_cad_22.png|500px]]

Next, a sweep is created using the 2 previous sketches.
Select the sweep tool, select the 2 sketches, and select the Bidirectional option (green).

[[Image:slide_cad_23.png|500px]]

This creates a rod with a curve at the end.

Next, we need to model the plastic plug that is attached to the end of the wire. As it is hidden inside the main body of the part, we need to do something to get access to it. Solidworks has a tool that makes this easy, called section view. To use it, click on the icon shown below:

[[Image:slide_cad_24.png|500px]]

This lets you drop a plane onto the part, and everything on the close side will be hidden. Don’t worry, it’s not gone. Just click the icon again to go back to the full part.
For this part, cut off the end of the pipe at the mouthpiece end.

[[Image:slide_cad_25.png|500px]]

Then, create a new sketch on the end of the wire. Draw 2 circles, one the size of the wire, and the other a little smaller than the inner diameter of the pipe. Extrude this sketch to a length of ½”. Make sure that “merge result” is not checked.

[[Image:slide_cad_26.png|500px]]

And you’re done with the cad!

==Make the parts==
* Now, it’s time to build it. Materials required:
* ½” PVC
* ½” PVC cap with hole in end
* ½” dowel
* ½” delrin plug
* Welding rod

[[Image:slide_cad_27.png|500px]]

First, the notch in the pipe needs to be cut. It is important that this notch not be to large or to deep, as it will negatively effect the devices ability to make sound.
Start by using a hacksaw to cut a small notch vertically into the pipe. Mount the pipe in the rubber vice clamps and cut just until through the wall of the pipe.

[[Image:slide_cad_28.png|500px]]

Next, cut in at an angle to form the notch. To start the cut, it is helpful to take a couple strokes vertically, and then cut in at an angle from that starting point.

[[Image:slide_cad_29.png|500px]]

Cut down to the vertical notch, removing the plastic triangle. The resulting notch will be rough, so next, use a wide file to smooth out the surface. Once the surface is smooth, remove the burs left on the inside of the cut with the deburring tool. Be careful not to remove too much material, as the tip of the notch needs to be thin and sharp to produce good sound.

[[Image:slide_cad_30.png|500px]]
[[Image:slide_cad_31.png|500px]]

Next, we need to bend the loop on the end of the wire rod. To do this, we will use the wire bender, which has a tutorial *here*. Use the ½” center peg and clamp the wire against it as shown below.

[[Image:slide_cad_32.png|500px]]

Once the wire is clamped in place, use the bender to bend the wire around the center peg, forming a loop.

The last part to make before assembly is the wooden peg. The outer diameter should match the pipe’s inner diameter, but the flat side needs to be created. To do this, simply sand the peg against sand paper until a suitable flat surface is created.

==Assembly==

First, slide the cap onto the wire rod. Make sure it is pointing the right direction. Then, clamp the rod in the vice, with about ¾” protruding above it. Take the delrin cylinder, and using a mallet, gently pound it onto the wire. Stop once the wire is fully through the cylinder.

[[Image:slide_cad_33.png|500px]]

Lastly, slide the slide assembly into the pipe, and insert the wooden peg into the opposite end.

And you’re done!