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hole dia not matching the .stl file info

Dannydefe

hole dia not matching the .stl file info
December 06, 2013 11:12AM

Registered: 12 years ago
Posts: 47

I'm having a little trouble with hole dia not matching the .stl file info on the print. Could I be missing a setting someplace?
Before I printed this part I printed out a 100 millimeter Square pattern , the dimensions were dead on.
The file was modified in solidworks and netfabb for proper dimensions prior to printing. the Dia is supposed to be just under 22 mm, but it is printing at 20.

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20131205_174522.jpg

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repetier

Re: hole dia not matching the .stl file info
December 06, 2013 01:36PM

Registered: 14 years ago
Posts: 2,705

Circles are always tricky. While printing the nozzle drags the filament to the inside reducing the diameter. The smaller the diameter the bigger the effect is. Lowering the speed might reduce this effect.

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Dannydefe

Re: hole dia not matching the .stl file info
December 06, 2013 02:45PM

Registered: 12 years ago
Posts: 47

I really don't think speed is the problem, the feed is quite low and the diameter of the circle is large.