Trouble with a hollow sphere
I am new to this, so please be patient.... I would like to create a hollow 1" sphere with a 1mm hole running through it (think: bobber to attach the boat keys to). To that end, I have gotten this far:...
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to make a sphere hollow, you need to difference it with another smaller sphere: difference() { sphere(r=10, center=true); sphere(r=9, center=true); } and the sphere will be hollow with 1 millimeter...
View ArticleRe: Trouble with a hollow sphere
Thanks for that! It worked. I think I just need to figure out the order that things go in. It will get easier as time goes on.
View ArticleRe: Trouble with a hollow sphere
I find using modules helps me keep in my head what I am doing. Instead of getting the central cylinder the exact length, I made it far too long so it protrudes and trimmed it off with a "negative...
View ArticleRe: Trouble with a hollow sphere
@Dave: I was suprised to find that OpenSCAD did indeed not create a proper STL file. Use the following code to create a proper STL file: // This creates the basic hollow sphere module HollowSphere() {...
View ArticleRe: Trouble with a hollow sphere
Hmm - making it from two halves did appear to generate a correct STL when I viewed it in a different application - however OpenScad failed to import its own generated STL! Dave
View ArticleRe: Trouble with a hollow sphere
That is why you have to load it in another program (such as netfabb Basic), repair the file and then save the repaired object. THEN OpenSCAD can load it. A lot of extra work but at least it gets...
View ArticleRe: Trouble with a hollow sphere
And yet, when I exported the orginal suggestion as an STL and loaded it into Repetier Host, it seemed to work. I sliced it with Slic3r and went through the layers and all looked ok. What am I missing...
View ArticleRe: Trouble with a hollow sphere
It depends on the program. If you use netfabb Basic you can see that STL is not manifold. This is a problem with OpenSCAD in that it could no longer properly differentiate what was inside/outside....
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