A tablet weaving frame-style loom that builds onto two two-foot sections of PVC. My preferred setup is to place the curved crossbar so the retaining screw holes are at the eighteen inch mark, leaving roughly five inches of pipe sticking out to support the far end on the table as I weave in my lap - as depicted in the thumbnail, minus the back part of the frame. You can also add the extra PVC fittings to raise up the far end and make an A-frame for use on a table. 

You will require 2x 10-32 3" countersunk machine screws (plus washers, hex nuts, and wing nuts or knobs) to assemble the clamp.

You will need a total of four small (size 6 or 8 by 1/4" or thereabouts) countersunk wood screws to retain the printed pieces on the pipes.

Optionally, covering the curved crossbar in packing tape is the easy way to prevent a printed part from abrading the threads. 

This loom is intended for use with warp weights. I recommend three ounce bank sinkers for tablet weaving. It also works with small rigid heddles.

Print the brake pieces with the bolt holes horizontal for proper rigidity. If you're going to print any part of the loom for extra strength, beef up these pieces. The main crossbars are big enough to be plenty strong on normal print settings.