Mendel90 printing accuracy

I need to print new extruder parts for my Mendel90.
The bearing holes are 22mm ID in the CAD model but my Mendel90 print the holes 21,5 +/-0.1mm so the bearing will not fit at all.
Unfortunately the external dimensions are also +0.2mm to big
I have experimented a lot with different settings and only the filament diameter setting gives a good result: 20.0 -0.05mmm (measured diameter is 2,92-2,94 and Setting is 3,25!)
Due to my incorrect filament settings the layer bond is not that good

Please help me out to reproduce a new extruder.

Thank you again in advance!

Edited 1 time(s). Last edit at 02/10/2015 02:58PM by Mendel90 FAN.

It depends on the slicer you use. You either need to reduce the outline flow rate or use XY scaling.

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[www.hydraraptor.blogspot.com]

Also the bearings holes are one of the few holes in Mendel90 that are not polyholes, so they will come out a bit small. I think I inherited them from the Prusa version of Wade's extruder. They are an interference fit, which is good for preventing the bearings moving, but they are perhaps a bit too tight when I print them as well.

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[www.hydraraptor.blogspot.com]

I made a complete new extruder in Solid Works with some improvements based on the cracks wich occured in my original extruder and with 22,1mm holes for the bearing.
Unfortunately now I have issues with missing steps during infill in small gaps and did not succeed with printing this part yet.
Any advice?

See my other post, but are you sure there is room for the motor and the idler axle? That is why those walls are not thicker in my design.

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[www.hydraraptor.blogspot.com]

Thank you by your advice I finally succeeded with printing my new extruder!
Indeed there was not enough space left for the motor so I had to file a bit...