This is frustrating, I really want to print these cranks in ABS Plastic (better heat resistance). No matter what I try I can’t get a clean print out of ABS.
I tried PETG the other day and it came out super clean! No warping not melting. I could make them out of PETG, they just have slightly less ability to resist heat (survive a hot car). Although as you can see in the picture below the PETG seems to be stronger, After a very unscientific stress test the ABS crank fail fairly easily. (See ABS broken on the right in the picture below)
That said I’m continuing to run tests with PETG. The nest test look at printing the knob and the crank as 1 part leaving space for the knob to rotate freely without having to split it into two parts.