DO IT YOURSELF SOLUTIONS TO REAL FISH ROOM PROBLEMS To submit a tip, trick or invention to the DIY page, please email us at: email@example.com. DIY MINI FISH TRAP Submitted by: Jim Burris, Duke University Click HERE for a download of this PDF. DIY Pellet Feed Gun Submitted by: Marc Tye, University of Minnesota - Twin Cities Click HERE for a download of this PDF. Click on the following components to download 3D CAD file. BOTTOM. HANDLE. LEVER. PIVOT. DECAP SLIDER S. DECAP SLIDER M. DECAP SLIDER L.