da Vinci Catapult
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da Vinci Catapult
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45
58
5
Print Profile(1)
0.2mm layer, 2 walls, 15% infill
Designer
7.8 h
2 plates
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45
58
5
0
84
40
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Description
I designed this da Vinci catapult to be used in my engineering classes. It will launch nerf rival balls about 15 feet through the air. Other materials you will need are
Mason line - about 3 feet
super glue to attach things permanently (if your pins don't hold) It is hard to get it dialed in perfectly.
Nerf Rival Projectile unless you want to use the included printed projectile
Bumper - you could 3D print with TPU a piece. I cut a small piece of floor saver for chairs and tables. It had adhesive on the back.
Look at the pictures for assembly and make sure the string is wound the correct direction. I might try and put together an assembly guide or video and link it later.
Comment & Rating (5)
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Print Profile
0.2mm layer, 2 walls, 15% infill
printed well. 4.5 stars. assembly instructions would have been helpful but it wasn’t too difficult to figure out. pins were extra tight which was nice. minimal glue needed
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Quite a funny design, and it works like a charm!
I printed twelve balls, which most probably will have to be reprinted once lost: the catapult shoots pretty far! ;-)
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https://youtube.com/shorts/6Jga1J-aUB0?si=hKaVsII2pp3OQYaD
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I'm not sure why the holes for the two bending plates to which the ropes are connected are all through and through: I had to glue them, while it would have been OK just to slide them in and then lock with additional pins?
Same for the axes for the drum: either I did not understand, but I used two pins instead of one long one, not sure why it is like that?
Had to glue them as well.
No big deal, but it could be changed a tiny bit design wise, so people do not need glueing.
Anyway, great toy! thanks!
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Print Profile
0.2mm layer, 2 walls, 15% infill
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