What is the correct way to make an open box with known internal measurements?

w_s856

This is a "looking for the best practice" or "looking for the right trick" or "looking for the right tool" kind of question. This is a very simple question.

I need to draw an open box (so 5 faces). It is 10x10x10 on the inside, with a 2 wall thickness

I have several solutions, none is "native":

• square 10+4 → extrude 10 → shell
• square 10→ offset 2→ extrude the shell→ sketch on th ebottom→ extrude 2
• square 10+4→ extrude 10→ sketch of a 10x10 square on a face→ extrude with "Remove"

There are probably many other ideas, more or less sophisticated. None of them is straightforward, though.

Is there a "correct" way to make a box, with the right tool? I was very close with the shell one, except that you cannot "shell out", that is to add material around the selected face, at the same time removing the face

Matt_Shields

Not sure thee's a "correct" way, but what about:

square 10→ extrude thin with a tickness of 2 to the outside and a depth of 10→ extrude the bottom down 2

nick_papageorge_dayjob

You're missing a trick. If you flip the shell direction it will add the wall thickness to the outside of the initial solid. Model a solid at 10x10x10. Add any rounds next for a consistent wall thickness. Shell it, removing the top, and flipping the arrow direction. Done. Internal box dims stay at 10x10x10.

link:

https://cad.onshape.com/documents/89f5cbbbc518116c5ca19f46/v/451d09417c61508fc946e0cf/e/92dad4f3481583b5e93aa13e?showReturnToWorkspaceLink=true

eric_pesty

@nick_papageorge_dayjob
That's a good trick, not sure I ever actually used the "flip" option in the shell!