STL Problem

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STL Problem

Postby LTH » Wed Mar 28, 2018 8:07 pm

I have a cooling duct I'm trying to design for my printer but I can't get it water tight to print. This is the first time I've tried to make anything like this. I'm attaching the file so you can see what I mean. Thx for any pointers you might have. Thx
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Re: STL Problem

Postby TIG » Wed Mar 28, 2018 8:25 pm

There are several issues...
First your axes are inverted.
Blue/Z == up
It's straightforward to Edit>Select>All and rotate it 180°

Get Thomthom's Solid Inspector to see these...

There are several issues you must fix manually.

The 10 circular holes break the surface of the object.
That immediately renders it a 'non-solid'.

The 6 similar edge holes create related issue.

There are also 6 internal face edges...

A 'solid' must have only faces and edges.
Every edge must support two faces - no more no fewer !
Any 'hole' in a surface will, by definition, have edges with only one face !!
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Re: STL Problem

Postby LTH » Wed Mar 28, 2018 9:02 pm

Thx Tig for your help. As you can probably tell I'm very new to Sketchup. I have all the issues resolved and back to a solid but I'm still in the dark as how to get the holes and it still be solid. Can you point me to a tutorial on how to accomplish this? Thx
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LTH 
 

Re: STL Problem

Postby TIG » Wed Mar 28, 2018 10:01 pm

If you expect the circular holes to penetrate into the form, then you need to draw over an edge in the circle to form a face, and PushPull that into the form by the desired dim, to make a recessed cylindrical hole.
If you want a hole to punch completely through the form, then PushPull it more so it is completely through the form. Now select the new extended cylinder and use the Context-menu > Intersect with Model, to cut the cylinder at the lower surface. Now select the unwanted faces/edges of the cylinder and erase them. You should now have a hole that pass right through the form ?
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