Yes this is an artifact of the printing technology, as the filament is deposited being stretched, those forces tend to bring it toward the inside of "holes".
See the excellent blog post from nophead on that subject for more details : [
hydraraptor.blogspot.fr]
You have multiple workarounds :
- Adapt your 3d models by trials and measurements.
- For somewhat small circular holes, you can use the "polyholes" method described in the blog post above. I use that drawing as a reference for this : [
reprap.org]
- Or you can post process your prints : circular holes can be drilled, other types filed ,etc.
- There exist some software settings/adjustments in the different slicers which could help mitigate the problem. Cannot advice you on that topic as I have no personal experience about it, but I believe it tends to create problems in other parts of the prints.
Edit : by the way, as you are using english, unless you specifically want replys from local people you should post that general question in a more appropriate section of the forums to get a wider audience. For instance in "printing" section : [
forums.reprap.org]
Edited 1 time(s). Last edit at 10/25/2017 04:00AM by DeuxVis.
Most of my technical comments should be correct, but is THIS one ?
Anyway, as a rule of thumb, always double check what people write.
