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Thanks for your message and I'm pleased you like my designs.

With regards to the Pirhanaz the simple solution is to uniformly scale iit up by 10-15% as that will increase the clearances so should print with the jaws free to move.

The bottom line is that not all slicing apps aee as precise as others or machines as accurate as others. Either or both could be the problem.

Another thing you can try is rotating the model 45 or 90 degrees before slicing it as that may force the app to see it differently so the clearances will be altered and the tool path will differ.

I hope this helps