I wanted to do a group project for the two dozen members of my son`s troupe. They dont have a lot of $$, so donated projects like this are welcome, and also young boys like to shoot at things!
Decided small catapults would be fun. Received good feedback for the idea - we will just get the kids to sand them up, put them together and fire plasticine balls at cans or something.. The design is just tab and slot together with the rubber band holding the main parts together as well as firing the catapult arm.
Ran my Shopbot for 4 hours today (while I was doing other work) to cut up a full 4x8 sheet of 6mm Baltic birch, and another part sheet. I dont push the one eighth bit too fast, just 120 IPM.
The large regen blower I have (10 Hp Elmo) raised my shop temp 4 or 5 degrees! Nice benefit now that I have the furnace running anyhow.
prototype..