this uses the extra 4 turning knob screws, 2 square and 2 hex nuts that come with the workstation that im not sure what they were intended for so i decided to use them in the print. You need to add a pause in the print just before the layer that would cover the nuts so you can insert them.

the hex nut was a bit tight to put in but it does go with some force, perhaps i should have made it a bit bigger. anyways they design works perfectly now for holding items steady. you can print 2 versions of each nut and 4 tops and your good to go. the bottom pieces have a handle so you can slide it thru the gap and attach the top piece.

0.2mm structural 10% infill MK4