M3 nut tool
by fns720, published
There're two holes for the M3 nuts - one on both sides.
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Yep actually I got also the issue on my previous print (see my main pic where the nut is not fully inside the head?!)... Though, the design uses the same diameters I used everywhere else, so it may be that the split head makes the two sleeves cool and retract "inwards". As you say, sometimes it's a bit tiring, so I was glad that the print here takes only a few minutes!
Also, you made me double check it and I added a ref to the standard metrics btw, thanks!
You are right, the customizer really rules :)
I measured a couple of my M3 nuts and all of them were 6.15-6.25 mm from corner to corner. My 6.4mm prints are just a bit tight but I can push a nut into them by using a plier. 6.8 mm holes are wide enough to fit with the nuts without any further modification.
Plastic shrinking: I ordered the raw materials directly from Ultimaker. I had the same ~0.4-0.5 mm tolerance problems in the past with other rolls of filament too - maybe the printer is not calibrated properly, I do not know. I always add 0.4-0.5 mm extra gap on my objects and it works. I'm a bit tired of continuous printer hacking :)
Actually, the customizer could have done it: http://www.thingiverse.com/app... and tweak "Nut D base" = 6.8 (or increase "Nut Tolerance"), and you'd get a similar result with the flexible head. Since a M3 nut width really is 6mm across corners, may be your plastic is shrinking a lot?
No biggie though, the thingiverse is expanding, so it won't get hurt with redundancy :)
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