PulleyCar

1. Launch AutoCAD.
2. Create a new drawing. Select File>New Drawing:
   
3. Select acad3D.dwt template file and press the Open button to continue to the drawing screen.
   
4. Find the commandline.
   
   
   
   If it is not present you should be able to open it it by selecting Window> Command Line
   
   
   Other ways to display the command line are:
   • Pressing Command+3 on Mac, CTRL+9 on Windows.
   • Pressing F2
   •Typing COMMANDLINE or CLI
5. You want to set your units to millimeters. Type UN and select UN (UNITS):
   
   
   or select Format>Units from the top menu to bring up the Units Dialog box.
   
   Set your units to millimeters:
   .
6. You want to create a resolution appropriate for 3D printing. Type FACETRES and set it to 10.
7. Make sure your profiles are not deleted after you use them. Type DELOBJ. Set the value to 0.
8. Make new layers for Chassis, small pulley, large pulley and stoppers.
9. To save your drawing type SAVEAS and save your drawing either in your work folder or on the desktop. Make sure to name your drawing so that you can find it later.
10. Make the Chassis layer active.
11. You want to create a rectangle 66 x 110 mmm.
    Type RECT for rectangle and press RETURN.
    Set the starting point to 0,0 by typing 0,0 and pressing RETURN.
    Set the next corner to 66, 110 by typing 66,110 and pressing RETURN.
12. Type Z and press RETURN then type E and press RETURN to Zoom Extents
    
13. You want to round the corners. Type FILLET and press RETURN.
    Then type R for Radius and press RETURN. You want a radius of at least 10. Press RETURN.
    Type M for Multiple and press RETURN.
    
14. Click on the left side of the rectangle near the top and the top of the rectangle near the left side. Continue for all corners. Feel free to change the FILLET values between the front and back of the chassis.
    
15. Type OFFSET and press RETURN.
    Type 3 and press RETURN.
    Click on the outline of the chassis to select it then click inside the outline:
    
16. Type L for LINE and press RETURN.
    Click on the midpoint of the top of the chassis to set the first point. Click to accept.
    Type @0,-20 press RETURN.
    Press RETURN again to end the line.
    
17. Type L again and press RETURN.
    Set the first point to the end of the line you just drew. Click on the point.
    Set the end of the line to where it intersects the frame (You made need to check that the intersect OSNAP is enabled). Click and press RETURN to end the line.
    
18. Type OFFSET and press RETURN.
    Type 4 and press RETURN.
    Click on the horizontal line you just drew to select it then click below it:
    
19. Type L for LINE and press RETURN.
    Click on the point where the curve of the top right fillet becomes straight to set the first point.
    Click on the intersection of the top horizontal line below the fillet and press RETURN to end the line.
    
20. Type OFFSET and press RETURN.
    Type 1.5 and press RETURN.
    Click on the vertical line you just drew to select it then click on both sides of it:
    
21. Select the center line and delete it:
    
22. Type TR for TRIM and press RETURN.
    Click on the inner outline and press RETURN.
    
    Click on the horizontal lines between the outlines to remove them.
    Press RETURN to stop trimming:
    
23. Type MIRROR and press RETURN.
    Select the two vertical lines and the 2 horizontal lines and press RETURN.
    Click on top of the midpoint of the chassis and then on the bottom of the vertical line drawn from that point. Press RETURN.
    Press RETURN again:
    
24. Type TR and press RETURN.
    Click on the four vertical lines and press RETURN.
    Click on the segments between the tops and bottoms to remove. Press RETURN:
    
25. Trim the left and right side:
    
26. Type EXTEND and press RETURN.
    Click on the bottom inner outline of the chassis and press RETURN.
    Click the four vertical lines.
    Press RETURN to end:
    
27. Draw this horizontal line.
    
28. Use OFFSET to make another line 4mm away:
    
29. Use TRIM to clean up the drawing:
    
30. Use L to draw these lines:
    
31. Type C for CIRCLE and press RETURN.
    Click on the intersection of the lines and press RETURN.
    Type D and press RETURN.
    Type 2.5 and press RETURN:
    
32. Use MIRROR to place the four circles:
    
33. Delete the crossing lines.
34. The 9V matter is 25.5 mm wide and 16.25 high and 50.5 long (with the connector. Keep in mind that your walls will have thickness. If your wall is .8mm thick add that value to your length.
    You need to make a space .4mm larger on each side to hold the battery, and then add .8 to every edge that will have a wall.
    
35. Your pulleys should be about 55mm away from each other. Use LINE to sketch out the distances.
    
36. Your motor dimensions are 27.2mm long, 10 wide and 12.05 deep. You need to add .4 to all dimensions and then add .8 to every edge that will have a wall.
37. Center the rectangle:
    
38. Maybe I want a longer chassis? If you do as well, type BREAK and press RETURN.
    Click on the outer outline.
    Type F for first and press RETURN.
    Click where you want to break and then type @ and press RETURN.
    
39. Select the lines and move them to where you want them:
    
40. Delete the extra lines and use EXTEND and TRIM to complete the shape:
    
41. Add an OFFSET of 3 to your motor rectangle:
    
42. Use TRIM to clean up the drawing:
    
43. Delete the center line and the dimension lines :
    /li>
44. Type VS for VSCURRENT and press RETURN.
    Type S for Shaded with Edges and press RETURN.
    
45. Type PRESSPULL and press RETURN.
    Move mouse over shape until everything is highlighted and type RETURN.
    Type 2 and press RETURN:
    
46. CTRL+ click on the work area. Select Isolate>Hide Objects. Select the chassis.
47. Add the walls around the battery and the motor. Use PLINE to create polylines that can be offset. Make your walls .8mm thick (use OFFSET). Make the battery walls 18.5mm high:
    
    Fillet the edge with FILLETEDGE:
    
48. Make the walls for the motor. They should be 14.4 high. Fillet the edges:
    
49. Make a box that is 1 mm thick, 5 mm wide and 12.4 mm high:
    
50. Move the box so the center is aligned with the motor's back wall:
    
51. Subtract the box from the wall:
    Type SUBTRACT and press RETURN.
    Click on the back wall and press RETURN.
    Click on the box and press RETURN.
    
52. Type REGION and press RETURN.
    Select all the circles and type RETURN:
    
53. Type EXTRUDE and press RETURN.
    Click on a circle and press RETURN.
    Type 8.6 and press RETURN.
    
54. Create a box 4x4x6.6 and move copies so that their centers align with the top centers of the cylinders.
    
55. Subtract the cylinders from the boxes.
    
56. CTRL+ click on the work area and click on Isolate>End Object Isolation.
57. Export your chassis.
    

Small Pulley

1. Type CONE and press RETURN.
   Set the base Diameter to 17.4.
   Set the Top radius to 6.88.
   Set the height to 1.7.
2. Type Cylinder and press RETURN.
   Set the starting point to be the center of the top of the cone.
   Set the radius to 6.88.
   Set the height to 3.
3. Make a copy of the bottom cone and move it to the side.
4. Type 3DROTATE and press RETURN.
   Click on an axis and type 180 in order to rotate the disk 180 degrees.
5. Type M for MOVE and press RETURN.
   Select the flipped disk. Set the bottom center to the top center of the cylinder.
6. Create another cylinder with the diameter 3.4.
   Set the height to 12.
7. Use MOVE to center the cylinder with the stack of cones and cylinder.
8. Subtract the tall cylinder from the group.
9. Export

Large Pulley

1. Type CONE and press RETURN.
   Set the base Diameter to 34.8.
   Set the Top radius to 13.76.
   Set the height to 1.7.
2. Type Cylinder and press RETURN.
   Set the starting point to be the center of the top of the cone.
   Set the radius to 13.76.
   Set the height to 3.
3. Make a copy of the bottom cone and move it to the side.
4. Type 3DROTATE and press RETURN.
   Click on an axis and type 180 in order to rotate the disk 180 degrees.
5. Type M for MOVE and press RETURN.
   Select the flipped disk. Set the bottom center to the top center of the cylinder.
6. Create another cylinder with the diameter 3.4.
   Set the height to 12.
7. Use MOVE to center the cylinder with the stack of cones and cylinder.
8. Subtract the tall cylinder from the group.
9. Export

Wheels

Wheels need to have a diameter greater than the large pulley and a wall thickness of .8mm. There should be a central cylinder for the axel to fit snuggly on. This central cylinder should be slightly higher than the wheel.

Stoppers

Stoppers fit over the axel and keep the wheels in there proper place. Keep them small.

Toy Car

1. Search the internet and find a side view of a car that you find appealing. Save the image to the desktop.
2. Launch AutoCAD.
3. Create a new drawing. Select File>New Drawing:
   
4. Select acad.dwt template file and press the Open button to continue to the drawing screen.
   
5. Find the commandline.
   
   
   
   If it is not present you should be able to open it it by selecting Window> Command Line
   
   
   Other ways to display the command line are:
   • Pressing Command+3 on Mac, CTRL+9 on Windows.
   • Pressing F2
   •Typing COMMANDLINE or CLI
6. You want to set your units to millimeters. Type UN and select UN (UNITS):
   
   
   or select Format>Units from the top menu to bring up the Units Dialog box.
   
   Set your units to millimeters:
   .
7. You want to create a resolution appropriate for 3D printing. Type FACETRES and set it to 10.
8. Make sure your profiles are not deleted after you use them. Type DELOBJ. Set the value to 0.
9. In the top left corner set the Custom Visual style to Wireframe.
10. Autodesk, like Photoshop has layers. Type LAYER (LA) to initiate the command
    or select Window>Layers or press Command+4 (Mac):
    
    
    This will bring up the Layer Properties Manager Palette:
    
11. Click the New Layer Button.
    
12. Name the new layer image (press <RETURN> after typing the name in the field).
13. Click the New Layer Button again.
    
14. Name the new layer drawing (press <RETURN> after typing the name in the field).
15. Type Properties or PR to open the Properties Inspector
    or select Window>Properties Inspector or press Command +5 (Mac)
    
16. In the Properties Inspector make the drawing layer's color red:
    
17. To make a layer active, find your layer name in the dropdown list and select it. Make the image layer active.
    
    To move objects to a particular layer, select your object or objects or drag a box around them (if you drag from left to right (→), your selection must include every line. If you you drag from right to left (←) you just need to include part of every segment). Look for the Layer Properties Manager Palette. There is a drop-list there with your layer names. With your objects selected, change the layer to object.
    
    
    Press the ESC key. If all went well, your object will now be on the selected layer.
    
18. To close the Properties Inspector type PROPERTIESCLOSE.
19. Type ATTACH and navigate to the profile of your car.
20. Click on a point where you want to place your image then drag a box to orient it.
    
21. Click on the Dimension menu and select Linear. Click on one side of the car and then the other. Make sure the car is the correct size to fit inside the gumball capsule.
    
22. If you can't read the dimension select Format>Dimension Style.
    
    
23. From the dropdown select Modify
    
24. Select Text. Change the text size to 1.
    
25. If you need to change the size of the car determine the scale ratio by dividing what you want by what you have. Type SCALE and press RETURN. Click on the image and press RETURN . Click on the left side of the image to establish a base point. Type your scale factor and press RETURN.
    
26. In the Layer palette lock the image.
    
27. Make the drawing layer active.
28. Disable ORTHO and OSNAPS on the Status bar.
29. Type PLINE and trace the outline of the car, but do not include the wheels:
    
    
30. Type C for circle and click and drag a circle that is roughly the tire size:
    
31. Type OFFSET and press RETURN. Type .8 and press RETURN. Select the circle and click on the outside of it.
    Type OFFSET again and press RETURN. Type 1.6 and press RETURN. Select the second circle and click on the outside of it:
    
32. Type CO for COPY and press RETURN. Select the three circles and press RETURN. Click on the center of the circles then click where you want the center of the other wheel to be:
    
33. Type TR for TRIM and press RETURN. Click on the two larger circles and press RETURN:
    
34. Click on the outline of the car that is inside the large circles. The lines should disappear:
    
35. Type TR again and press RETURN. This time click on the lines that outline the car. Press RETURN and then click on the tops of the large circles to delete them:
    
36. Type PE for PEDIT and press RETURN. You want to make the outline a closed shape. Type M for multiple and press RETURN. Click on all the lines that make up the outline. Press RETURN. Press RETURN again then type J for Join and press RETURN until the command line clears:
    
37. Turn off your guide image and change the view setting to Shaded with Edges:
    
38. Type OFFSET and press RETURN. Type 1.6 and press RETURN. Click on the inner circle and then click inside it.
    Type OFFSET again and press RETURN. Type .4 and press RETURN. Click on the innermost circle and then click inside it.
    
    Type C and press RETURN. Click on the center of the circles. Drag a diameter out so that the last circle is larger than the curve that is part of the outline. Type M for MOVE and press RETURN. Move the smallest and largest circles and move the copy away from the car:
    
39. Type PRESSPULL and press RETURN. Move your cursor between the two inner circles. When they are both highlighted press M for multiple and repeat the process for the other tire. Press RETURN. Then type 21.2 and press REURN:
    Type PRESSPULL again and press RETURN. Move your cursor to the next circle. When it is highlighted press M for multiple and repeat the process for the other tire. Press RETURN. Then type 20 and press RETURN:
    
40. CTRL+click and select PRESSPULL. Move your cursor over the outline of the car. When it is highlighted press RETURN. Type 20 and press RETURN:
    
41. Use the viewcube in the top right corner to adjust your view:
    
42. Type SUBTRACT and press RETURN. Click on the car, press RETURN. Click on the cylinder between the outline and the taller tube. Press RETURN:
    
43. Subtract the other cylinder and then type PRESSPULL and press RETURN. Clock on the smallest circle and extrude it 7:
    
44. Call PRESSPULL again and extrude the outer circle 3mm
    
45. Type BOX and press RETURN. Click away from the cylinders and press RETURN. Type @10,1 and press RETURN. Type 3 and press RETURN:
    
46. Type M for MOVE and press RETURN. Click on the box and press RETURN. Select the midpoint on the top face of the box as the first point and the top center of the smaller cylinder for the second point:
    
47. Call SUBTRACT and remove the box from the cylinder. Make three copies. These will be your wheels that you will pressfit into the axels:
    
48. Type EXPORT and press RETURN. Name your file. Select STL for type and press SAVE. Select your model and press RETURN.
49. To save your drawing type SAVEAS and save your drawing either in your work folder or on the desktop. Make sure to name your drawing so that you can find it later.

Logo charm

1. Search the internet and find a side view of a car that you find appealing. Save the image to the desktop.
2. Launch AutoCAD.
3. Create a new drawing. Select File>New Drawing:
   
4. Select acad.dwt template file and press the Open button to continue to the drawing screen.
   
5. Find the commandline.
   
   
   
   If it is not present you should be able to open it it by selecting Window> Command Line
   
   
   Other ways to display the command line are:
   • Pressing Command+3 on Mac, CTRL+9 on Windows.
   • Pressing F2
   •Typing COMMANDLINE or CLI
6. You want to set your units to millimeters. Type UN and select UN (UNITS):
   
   
   or select Format>Units from the top menu to bring up the Units Dialog box.
   
   Set your units to millimeters:
   .
7. You want to create a resolution appropriate for 3D printing. Type FACETRES and set it to 10.
8. Make sure your profiles are not deleted after you use them. Type DELOBJ. Set the value to 0.
9. In the top left corner set the Custom Visual style to Wireframe.
10. Autodesk, like Photoshop has layers. Type LAYER (LA) to initiate the command
    or select Window>Layers or press Command+4 (Mac):
    
    
    This will bring up the Layer Properties Manager Palette:
    
11. Click the New Layer Button.
    
12. Name the new layer image (press <RETURN> after typing the name in the field).
13. Click the New Layer Button again.
    
14. Name the new layer drawing (press <RETURN> after typing the name in the field).
15. Type Properties or PR to open the Properties Inspector
    or select Window>Properties Inspector or press Command +5 (Mac)
    
16. In the Properties Inspector make the drawing layer's color red:
    
17. To make a layer active, find your layer name in the dropdown list and select it. Make the image layer active.
    
    To move objects to a particular layer, select your object or objects or drag a box around them (if you drag from left to right (→), your selection must include every line. If you you drag from right to left (←) you just need to include part of every segment). Look for the Layer Properties Manager Palette. There is a drop-list there with your layer names. With your objects selected, change the layer to object.
    
    
    Press the ESC key. If all went well, your object will now be on the selected layer.
    
18. To close the Properties Inspector type PROPERTIESCLOSE.
19. Type ATTACH and navigate to the profile of your logo.
20. Click on a point where you want to place your image then drag a box to orient it.
    
21. Click on the Dimension menu and select Linear. Click on one side of the car and then the other. Make sure the car is the correct size to fit inside the gumball capsule.
    
22. If you can't read the dimension select Format>Dimension Style.
    
    
23. From the dropdown select Modify
    
24. Select Text. Change the text size to 1.
    
25. If you need to change the size of the car determine the scale ratio by dividing what you want by what you have. Type SCALE and press RETURN. Click on the image and press RETURN . Click on the left side of the image to establish a base point. Type your scale factor and press RETURN.
    
26. In the Layer palette lock the image.
    
27. Make the drawing layer active:
    
28. Disable ORTHO and OSNAPS on the Status bar.
29. Type PLINE and trace the outline. Once complete add an OFFSET. My offset was .8.
    Turn the image on and off as needed:
    
30. Make sure there are no unattached parts. Be creative with your connections. Remember to trim:
    
31. Add a loop:
    I used ARC, but you can use circles, plines, lines or rectangles, etc:
    
32. Continue adding detail. Remmeber you can use EXTEND and TRIM too:
    
33. When you are done, type PE for PEDIT and press RETURN. Type M for multiple and press RETURN. Select All the lines and press RETURN twice. Type J for JOIN and press RETURN until the command line is cleared:
    
34. TYPE VS for VSCURRENT and press RETURN. Type S for Shaded with Edges and press RETURN.
35. Type PRESSPULL and press RETURN. Move your cursor over the lines until everything is highlighted. This might take a bit of trial and error. When Everything is highlighted type the amount you want to extrude and press RETURN:
    

Coin Trap

1. Find a coin (keep it small in size)
2. Use the digital calipers to measure the diameter. Make a note of it.
4. Launch AutoCAD.
5. Create a new drawing. Select File>New Drawing:
   
6. Select acad3d.dwt template file and press the Open button to continue to the drawing screen.
   
7. Find the commandline.
   
   
   
   If it is not present you should be able to open it it by selecting Window> Command Line
   
   
   Other ways to display the command line are:
   • Pressing Command+3 on Mac, CTRL+9 on Windows.
   • Pressing F2
   •Typing COMMANDLINE or CLI
8. You want to set your units to millimeters. Type UN and select UN (UNITS):
   
   
   or select Format>Units from the top menu to bring up the Units Dialog box.
   
   Set your units to millimeters:
   .
9. You want to create a resolution appropriate for 3D printing. Type FACETRES and set it to 10.
10. Make sure your profiles are not deleted after you use them. Type DELOBJ. Set the value to 0.
11. In the top left corner set the Custom Visual style to Wireframe.
12. Create a box that is at least 5mm larger than the coin's diameter.
    Type BOX and press RETURN.
    Type 0,0 and press RETURN.
    Type the diameter of your coin and at least 5,the diameter of your coin and at least 5 (The box must fit inside the capsule) and press RETURN.
    Type the diameter of your coin and at least 5 and press RETURN.
13. Type VS and press RETURN.
    Type 2 for 2dwireframe and press RETURN.
    
14. Create a cylinder with a diameter less than the coin and a height equal to the box. Type CYLINDER and press RETURN.
    Set the first point to be the center of the top plane of the box and press RETURN.
    Type the diameter less than your coin and press RETURN.
    Type the negative number that is equal to the height of the box and press RETURN.
15. CTRL+click on the workarea and select Isolate> Hide Objects.
    Click on the box and press RETURN.
16. Type CO for COPY and press RETURN.
    Click on the cylinder and press RETURN.
    Click on a point on the cylinder and press RETURN and click on same point and press RETURN again. You now have two copie in the same place.
17. Open up the Rotate GIZMO. Click on one of the cylinders. Select the green Axis and type 90 and press RETURN. Press ESCAPE to dismiss the GIZMO.
18. Make another copy of the vertical cylinder.
19. Open up the Rotate GIZMO. Click on one of the cylinders. Select the Red Axis and type 90 and press RETURN. Press ESCAPE to dismiss the GIZMO.
20. Combine the cylinders: Type UNION and press RETURN.
    Click on all the cylinders and press RETURN:
21. CTRL+click on the workarea and select Isolate> End Object Isolation and press RETURN.
22. Change the view to 2D Wireframe.
23. Create a sphere with a diameter that matches the length, width and height of your box. The center of the sphere should be the center of the box.
    
24. Change the view to Shaded With Edges.
25. Subtract the combined cylinders from the box.
26. Subtract the sphere from the box.
27. Select all the outer edges of the box and apply a 1mm filetedge
28. You could also fillet the holes.
29. Select the box and export it.
30. Make a note of the print time as you'll want to drop the coin in about midway through printing.