Locking Plate for Flat Pack Camera Arm

This part is a mod for my flat-pack camera arm design - https://www.thingiverse.com/thing:2266891

This Thingiverse page provides the part files for the camera arm locking plate. I've written a tutorial on the process of how to cast low-temp metal alloys using 3d printed molds up on Adafruit- https://learn.adafruit.com/metal-parts-from-3d-prints/

The process involves common tools and supplies - a 3d printer, silicone rubber, a hot plate, stovetop casting alloy, and a dollar store skillet. T