Automatic Rubber Band Blaster-32

by vanmunch, published

Automatic Rubber Band Blaster-32 by vanmunch Feb 8, 2015


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History trembled the day the Rubber Band Blaster-32 was first forged. Squeeze the trigger briefly and fire once, hold it down and release a torrent of rubber bands. Quickly reload by simply replacing the barrel and keep going.

Slow motion video: https://www.youtube.com/watch?v=CEQ0T4qCQKU


Reloading: https://www.youtube.com/watch?v=m4xSol8nA3I
Assembly: https://www.youtube.com/watch?v=i-P6L7N33EY

Uses #32 rubber bands

In addition to the printed parts you will need:

1- Right Angle, Single Sided Geared Motor
1- 2xAA Battery Holder
1- Large, Red Classic Momentary On Switch
1- 7" by 3/8" Dowel
1- 2.5" by 3/8" Dowel
1- Screw Eyes 5/16" Inside Diameter
1- Screw Eyes 1/8" Inside Diameter
1- 5" Two Conductor Insulated Wire
2- 3" Single Conductor Insulated Wire
3- #6x5/8" Screws
2- #4x1" Screws
1- #2x1/4" Screw
1- 4.5' Nylon String

Use your own non printable parts or order the kit with the non printable parts online at http://www.shuttlebaylabs.com

PS This was part of a KickStarter that I did last summer:

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Hmm, i am getting a error on the
Object is non-manifold. Slicing may produce wrong results. Please repair object file first.
this is with Repetier v1.5.5

Hi oferk, Aurel,

I reuploaded both the RBB-32 handel and spindel .STL files with the units set to mm so that should fix that problem of them looking small in your slicer program. I thought I had changed them all but obviously some of them got through. Anyhow, I hope this helps. :) Thanks, for helping each other!


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hi, some of the stl too small
what should i do? how large they should be?

HI Oferk,

I see you had troubles with the stl files. I had to resize some too but one still is a bit of a problem, the "RBB-32-Handle". I can't print it properly though I resized it (it prints in some holes, like the trigger area). I'd like to avoid having to draw from scratch and was wondering if maybe you sorted it out and had a proper RBB-32-Handle, ready to slice and print.
It would make my day !
Thanks, cheers,

hi, i just resize it in the printer program, mine is repetier, from inches to mm its need to be 25.4 * for every axis
and i printed it when the circle side is on the bottom with support

Comments deleted.