GregValiant 1,342
Carla you type faster...
Horizontal expansion can be the answer.
When the nozzle goes around a hole it drags the filament in toward the center. That makes a round hole smaller. The smaller the diameter of the hole, the worse it gets.
You can set the Hole Horizontal Expansion to .1 or .2 (you will have to experiment) to make the hole larger. When printing the male - you could set the Horizontal Expansion to -.1 or -.2 to make the male part smaller. It will probably hate you for that. Hole Horizontal Expansion only works on vertical holes and ANY vertical pocket is a hole.
You can also try setting the Z seam to "Random". There will be bumps all around instead of in a line. It might have some benefit though.
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Carla_Birch 116
It's likely to be calibration of the printer, likely can be fixed by making small edits to the flow rate of filament, try printing a 20mm cube and see how big it is on all sides.
If you can not dail it in so they work, if the model is your own you can adjust in the model.
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