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Through hole not working (by James)
Hi,

I am new to the world of modelling with programmes like solvespace but am enjoying the learning curve immensely.

I have come up against a problem I can't seem to solve.

I have drawn a rectangle and extruded it to form a 10mm thick plate. Before extruding I added a datum point which I want to use to create a hole through the plate. I started a sketch in a new plane on the datum point and created a cone in the new sketch. I then rotate extruded this to form the cone through the plate. I set the parameter on this extrusion to be difference. However, when I roatate the model to see the result, the hole doesn't go through the plate. All I see is the outline of the circle on top of the plate. I have tried everything to fix it but I can't find what the problem is.

I'm sure that the answer is very easy and I hope someone can help out,

James
Tue Apr 21 2020, 17:45:31
(no subject) (by Andrew)
What you need to do is draw a triangle, with one side being the axis of rotation that in the plane of the rotation axis, that is a half section of the desired hole. To avoid problems with NURBS surfaces, place the top of the triangle a small distance above the plate. See attached drawing, conical_hole.slvs.
Tue Apr 21 2020, 19:57:41, download attachment conical_hole.slvs
(no subject) (by James)
Thanks so much for that. I'll have to look at what NURBS surfaces are. I did find that I could get it to go through if I started and ended thecone with a little vertical entrance into the main hole.
Tue Apr 21 2020, 23:35:19
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