This is a remix of my larger string shooter. This one was made to be portable and battery powered. I used the motors and battery pack from an airplane that I had a long time ago from Harbor Freight. If you saved the motors and battery pack from the same airplane you can make this with the same parts I did. The plane was a Yellow Bee Rechargeable Radio Control Airplane. Looks like Harbor Freight still sells the same plane. I just happened to find a couple of rubber bands that fir the wheels perfectly. I have no idea where I would get new ones if I lost one.

The Laser cut parts are made from 0.20" thick plywood.

The funnel is held on by 6-32 screws. I used tap to create threads in the 3D printed part so the screw could thread into it.

The wiring looks more complicated than it needs to be. The motors are just wired in series with each other and a switch between them and the battery. I also wired in an optional connection for connecting it to the wall with a wall wart transformer.

This is one of the two string shooters brought to the meetups at Maker Faire Bay Area 2019. Hack-a-Day Meetup and OSH Park Bringahack.