I have a drawing of a radiator shroud that was given to me as a .stp file.
After opening it in Solidworks I need to fill the inside of it so that i end up with a solid part.
Is there a easy way to do that?
Did you run import diagnostics on the geometry?
Can you attach the original *.stp file here?
You could do a surface fill on each end to close it in.
A) If it is surface, try knitting it. Then fill the opening with a surface and knit all faces with 'try forming solid' option. That will give you the inside volume.
B) if it is solid, then add a extrude to close the opening. Then subtract the body from a bigger body and keep the inside body only. That will be the inside volume.
Hope this helps.
If the model is enclosed by surfaces and/or planes, you might want to try the Intersect feature. Insert > Features > Intersect or from the Featuers CommandManager tab.
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