M39 rear cap

by aeropic Oct 11, 2015
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Same in my case, cap gets too loose on the lens and fall. My printer is very accurate, nozzle 0.3mm and 0.1mm layer heigth.
But thanks for including the SCAD source, will try to fix it.

I opened the source file, I remember now I introduced a (maybe) to big margin to add some play. it is the first line of the file :

clearenceM39 = 1.0; //add some play between nut and bolt

Just reduce the value ...

Clearance = 0.5 did the trick, thanks!

I see, thanks!!

The diameter is larger by 1 mm. Not fixed on the lens.

maybe dependent on the printer's accuracy ? Just scale it in X/Y before slicing by 39/40 ...