Ghostbusters Booster Plug for Proton Pack

This is a simple design based on Stefan's plans on GBFans. It has a 52.3mm diameter to fit into a piece of 2" PVC/ABS pipe. The thinner portion measures at 28.6mm wide, which is screen accurate. If you want the bottom to sit higher in the tube as it does in some packs, just simply adjust the height of the piece. I made the bottom portion thick so that you would not get any wobble or tilt in your tube when you glue it in place.