Laser Fixture Bars

A fellow maker who has a Aeon EMP Galvo Laser Machine asked me to make him some custom tie down bars so he could then make his own custom fixtures to hold down his work pieces. He loves them and especially likes how the top surface acts as a serration so he doesn't have to torque down the bolts very hard for them to stay perfectly. He said it should fit any laser with ¼-20 hardware.