Airwolf 3D Catapult
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Published on October 17, 2012
Description
Functional catapult
Here is a rendition of a truck/catapult combo.
The idea started when we bought a wooden toy from the hardware store that had to be glued and hammered together.
From scratch, we created the following design-enjoy!
You can read more about it at airwolf3d.com/blog/2012/10/16/download-and-3d-print-our-functioning-catapult/
Here is a rendition of a truck/catapult combo.
The idea started when we bought a wooden toy from the hardware store that had to be glued and hammered together.
From scratch, we created the following design-enjoy!
You can read more about it at airwolf3d.com/blog/2012/10/16/download-and-3d-print-our-functioning-catapult/
Instructions
Slice the stl file with your favorite slicer-we run one outer perimeters at 100mm/s and use 35% fill with Slic3r.
Note: No support is necessary if you have decent bridging ability.
After the part is printed, use an exacto to trim as necessary.
To clean up the holes (and make assembly easier), use appropriately sized drill bits.
Thread 1 M4x25mm bolt through the catapult base (optional opening for M4 nut on the opposite side included).
Then thread 4 M3x10mm bolts through the wheels and into the corresponding holes in the frame.
Attach a rubber band around the catapult and bumper and you are good to go!
Be careful not to hurt yourself or anybody else - this a tough design that can launch items up to 20 feet!
Note: No support is necessary if you have decent bridging ability.
After the part is printed, use an exacto to trim as necessary.
To clean up the holes (and make assembly easier), use appropriately sized drill bits.
Thread 1 M4x25mm bolt through the catapult base (optional opening for M4 nut on the opposite side included).
Then thread 4 M3x10mm bolts through the wheels and into the corresponding holes in the frame.
Attach a rubber band around the catapult and bumper and you are good to go!
Be careful not to hurt yourself or anybody else - this a tough design that can launch items up to 20 feet!
License
Airwolf 3D Catapult by airwolf3d is licensed under the Attribution - Share Alike - Creative Commons license.
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I hope my crandchild will play with it as long as it has printed (8 hours and 64 meters of filament). Very nice thing!