Tripod Mount for Digital Projector

Step 4 Tripod Interface

This step involves drilling and tapping a 1/4" - 20 threaded hole in the center of the tray you just welded. This is the step where using spring steel is disadvantageous. If you don't have a drill that you can set the proper speed on, it's easy to work harden and break bits on. I ended up turning a plug on a lathe because it was simpler than annealing the steel after it hardens.