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Vikary
(@vikary)
Member
Basketball ring issue

Hi 3D-printing Ninjas!

I'm trying to print a broke part of my sons's basketball bin.

Fiurst, I created the basic design in Sketchup, than converted to STL and opened with Slicer. It seems, that the inner side of the ring is "open", so the slicer wants to print the whole area, and not only the ring.

Any idea how to correct this?

Thanks for your support

vikary

Posted : 01/11/2023 4:41 pm
_KaszpiR_
(@_kaszpir_)
Honorable Member
RE:

the easiest is to add negative volume - right click on the model and select Add Negative Volume -> cylinder and then scale it.

Also looking at your print preview you probably want to rotate it in 45 degrees and use no brim/no skirt.

BTW looking at the first photo it seems that your model is a U shaped in the path around (there is no wall in the inside, just top, bottom and on the outer side), so it has open areas, probably that's why the slicer is confused when slicing.

See my GitHub and printables.com for some 3d stuff that you may like.

Posted : 01/11/2023 7:25 pm
LuckyLuke
(@luckyluke)
Member
RE: Basketball ring issue

I did a few models in Sketchup and quickly learned that you have to be extra cautious about faces orientation. Every face has inside and outside. I will guess that your face that is not shown in slicer has wrong orientation. Try to remove those faces and create them again. (Sadly, I don't know an easy solution for this issue)

Posted : 11/11/2023 5:21 pm
_KaszpiR_
(@_kaszpir_)
Honorable Member
RE: Basketball ring issue

You are talking about normals in 3D geomerty https://en.wikipedia.org/wiki/Normal_(geometry) - this defines direction of the surface (sometimes confusingly named 'face')  in 3D dimension.

See my GitHub and printables.com for some 3d stuff that you may like.

Posted : 11/11/2023 11:11 pm
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