The problem is that your cylinders with diameter 20 are subtracted from a
cube with size 20. Since the edges of the cylinders exactly touch the cube,
you get an infinitely thin wall some places in your design.
Make these cylinders 19.9 or smth., and it should improve.
Note that this is just a warning. 3D printing software will typically be
able to process this file just fine, perhaps with a few warnings.
NB! In general, you want to make negative objects protrude a little bit from
the positive one. That will also make previews less flickering.
-Marius
--
View this message in context: http://forum.openscad.org/My-first-design-Unable-to-export-to-STL-tp11463p11467.html
Sent from the OpenSCAD mailing list archive at Nabble.com.
The problem is that your cylinders with diameter 20 are subtracted from a
cube with size 20. Since the edges of the cylinders exactly touch the cube,
you get an infinitely thin wall some places in your design.
Make these cylinders 19.9 or smth., and it should improve.
Note that this is just a warning. 3D printing software will typically be
able to process this file just fine, perhaps with a few warnings.
NB! In general, you want to make negative objects protrude a little bit from
the positive one. That will also make previews less flickering.
-Marius
--
View this message in context: http://forum.openscad.org/My-first-design-Unable-to-export-to-STL-tp11463p11467.html
Sent from the OpenSCAD mailing list archive at Nabble.com.
