Thick Bed Cam Lock Clamp

Needed to hold a sheet of material down onto my 1/2" thick alum bed. total bed thickness is 16mm with sheet

Bull dog clips were not working for me. needed a low profile method to hold things down securely and also quickly removed. decided to use aL channel thats 3/4 x 1/2 as a pull down, added a cam to adjust tightness

print with alot of perimeters to give it strength