I needed a special clamp so I sat down and after sixty minutes I had this designed out. I started with a 120mm Ø bounding box (size of my mini delta print bed with glass plate). Then while printing I expanded on it. The first clamp part snapped at 25% so I changed from grid 25% to gyroid 35% 3 walls instead of two and added some chamfers and a round clamp pad at the end. While I was there I adjusted and made version 2 of 80mm threaded rod and a tool to torque it down. The tall tubes and rods I am printing with a raft. The wood PLA kept causing jamming so I switch to the silk black. I added in three different clamp ends, internal, external threaded and no threads. Threaded rods are 80mm and the threaded tube is 100mm (printing now). Use your slicer to make them smaller if you need (in cura just move the part below the print bed surface on how much you want to take off, it should still work).
You will need two clamp ends, at least 2 of the 25mm or a combo of 25mm 100mm. and a threaded rod. Print as many as you need for what you need. My special need would have used two clamp ends, 2 25mm tubes, 1 80mm threaded rod and one 100mm threaded tube if not more, haven't had a chance to test them as they are still printing. With having the wood pla jam and one part break it (the clamp v1 broke, 120min print job) two 25mm, threaded tube, rod, v2 clamp and which ever other one clamp style will be about 13 hours of printing speeding the machine up via firmware sometimes 2x 100mm/sec. (I also had ironing turned on). (estimated print time to internal threaded clamp and no thread with ironing 103min and 57 min).
The tubes (obviously) are hollow, but the threaded rods are also.
It is marked work in progress as I may change two things, Version 2 of treaded rod removed it snaps to easily part I can still use those, added a hex to hex shank.
might change the tool and make a version 3 of the threaded rod, and a new version 2 of the 25mm threaded tube (hex or square) so one tool. I may also change the holes in the rods to hex for using a tool to remove some thing that gets stuck it is pla after all.
3d warhorse and TTYT3D PLA, wood pla
wood pine & silk black
I did a 120mm bounding box circle and designed everything with that in mind. I could have printed almost everything in one pass if I had chosen to but I printed each individually
Run the threads over each other from each end a few times to smooth out the movement.