NOT PRINTED YET - Another product of lunchtime Autocad Fusion 360 tinkering (2 lunchtimes!).

Additional components required to complete are:-

1 x M6 Threaded Bar ( I think 200mm will be plenty ) 1 x M6 nut (to drop in the slot)

I've included a cross section of the balljoint and moving jaw. There should be 0.25mm clearance all around the spherical joint and I hope it should be a snap-in fit...I hope. The ball is 13mm dia. the socket is 13.5mm.

The ball joint is threaded M6 to fit on the end of the threaded bar tightly.

The optional handle will be a loose fit on the threaded bar so that you can use your favourite glue to ensure it's on there tightly.

I'd hazard a guess at 50% infill and thicker than normal surfaces for strength.

It only has to hold a corner joint while it dries, so hopefully will be quite strong.