Nex
Flush
Can perhaps fix this by using a different 3D printer, different material, or different print bed surface and/or prep (the latter two can make a huge difference in how well objects stick to it). Printing with a brim or raft also sometimes helps with bed adhesion issues.I think Spragg mentioned somewhere that he can't do a 4-punch pattern with 3D printed parts because one of the 4 legs always warps, whereas with 3, they are all stable, which makes sense. Tables with 4 legs can wobble, but tables with 3 legs can't.
Some part warping actually is due to the geometry of the model, but in some cases it's avoidable.
Alternatively, perhaps a 2-punch pattern would print fine and you use that twice. At least the 814/8D18 patterns definitely are punched using a 414 two times. I have a good bunch of such chips where one 4-set of spots is slightly misaligned/rotated so it's obvious it wasn't punched in one go with an 814.