Review on MR ALLOY Assortment Aluminum Profile by Daniel Bulkley

I've just started using a new 3D printer and many of the improvements to the printer have included attaching it to the aluminum frame of a 20x20 or 20x40 printer. These dowels go into the holes in the frame and use a metric screw to press the nozzle against the frame. I tried to print some on a plastic filament printer which is NOT strong enough to support any weight. These anchors seem to do the job well and are sized to fit my printer frame.