M3 bed adjuster nut

thingiverse

These finger knobs utilize an inserted M3 nut to replace the standard wing nut found on many three-dimensional printers. Having experienced issues with fit in the past, I normally print a test piece in a small flat square to verify the size of the hole before proceeding with the final print. I've created a sample block featuring four distinct sizes: 5.5 mm, 5.55 mm, 5.6 mm, and 5.65 mm. Printing the sample card allows you to determine which knob to manufacture.