Introduction: Physics Marble Cannon
Material
Wood
- 2 - 19 in 2x4
- 2 - 15 in 2x4
- 1 - 16 in 2x4
- 2 - trapezoids cut with 45 degree angle; Top: 6 in, Bottom: 13.5 in
- 2 - 10 in 2x4
Other
- 2 eye bolts
- 2 hose clamps
- 1 - 3/4 in tube strap
- 1 - 1 in tube strap
- 1 - 1 in PVC pipe
- 1 - 3/4 in PVC pipe
- 1 bolt
- 3 knuts
- 2 large springs
- 3/4 in dal rod
Step 1:
Screw 15 in 2x4 to outside of 19 in 2x4 vertically
Step 2:
Screw 16 in 2x4 on top of the frame from step 1
Step 3:
Screw trapezoid 2x4s into the inside of the frame, against the 15 in 2x4
Step 4:
Use 2 - 3/4 in tube straps to fasten 3/4 in pipe to the top of the 16 in 2x4, loosely to allow some movement
Step 5:
Then use 1 in tube strap to fasten the 1 in pipe on top of the 3/4 in pipe
Step 6:
Attach hose clamp to the 1 in pipe, inserting the two eyebolts on the sides then tighten
Step 7:
Attach one spring to each eyebolt
Step 8:
Drill a hole in through the side at the bottom of the dal rod
Step 9:
Insert the bolt through spring hole and dal rod hole
Step 10:
Attach bolts tightly to secure spring loops
Step 11: All Done
Just make sure everything is tight on the springs and it is loose on the top where the pipes touch so that it moves to the angle you need.