SOLVESPACE -- parametric 2d/3d CAD

(you are viewing a thread; or go back to list of threads)

How to make a through hole without knowing its depth (by Alberto)
Hi, following the tutorial I have learned how to make a hole in a solid part.

Some other CAD packages have an option for drilling a part through the entire solid, since many times it is not convenient having to compute the exact depth of the hole. Is there any constraint to tell SolveSpace that I am interested in drilling through the entire part?
Thu Sep 1 2016, 12:43:23
(no subject) (by Jonathan Westhues)
There's no feature to extrude through the entire part. There's no need to compute the depth of the hole, though; in the tutorial, that's defined by constraining the extruded point to lie on a particular surface.
Thu Sep 1 2016, 13:13:28
(no subject) (by Alberto)
I understand that the case of the tutorial works because both the entry and the exit surfaces are parallel, but what if they are not?

Imagine that I draw a triangle and extrude it. Then I draw a circle on one of the new faces created by the extrusion. If I constrain the exit point to be on the opposite face, the hole is not complete.
Thu Sep 1 2016, 16:39:00
(no subject) (by Andrew Bromley)
The hole length can be longer that the solid that it goes through, and it is trimmed to the surfaces of the object that it penetrates; that is an added solid ihat cover part or or of the whole is not penetrated by it. Just set its length to be equal to an edge of the solid that is at least as long, or longer than its path through the solid.
Fri Sep 2 2016, 03:52:33
(no subject) (by Alberto)
Good point, Andrew. I want to have the exact length instead of just overlapping the difference since sizes may vary in the future.

Can you be so kind of showing me how to make that constraint in the file attached? I am still not able to get the projected distance for the edge describing the depth.

Fri Sep 2 2016, 07:04:11, download attachment pierced_triangle.slvs
(no subject) (by Andrew Bromley)
What you need is a length that is guaranteed to be greater than or equal to the required hole length. In the drawing you posted, the hole length will always be smaller than the vertical height of the triangle, and the length of either of the other two sides ill always be greater than or equal to the vertical height. Constraing the length of the hole to be equal (Q) to)one of the nearly parallel edges of the solid will ensure that the hole always goes through the solid.
Fri Sep 2 2016, 10:56:30
(no subject) (by Alberto)
That was it! Thank you so much, Andrew.

I did not imagine that the constraint could match the projected length for the depth of the hole. Now it makes sense.
Fri Sep 2 2016, 11:33:24
Post a reply to this comment:
Your Name:
Your Email:
(no HTML tags; use plain text, and hit Enter for a line break)
Attached file (if you want, 5 MB max):
© 2008-2018 SolveSpace contributors. Most recent update Nov 22 2018.