Limit linear pattern to boundaries

paul_chrastina

Hi! I essentially have a box (open top) and am trying to put holes through two opposite sides. I'm making the holes from an extruded sketch that is linearly patterned in two directions. I'd like to have a border so that the holes don't go right to the edges, but I haven't found the right way to do it.

I've tried using Split to apply the pattern to only the interior area, but I'm not getting multiple parts. I've tried using boolean to limit the holes to the interior region, but I can't seem to find the right setup.

Can anyone give me some tips on what the best approach is, or general feedback that would make this better? Thanks!

File:
https://cad.onshape.com/documents/3ad46824cf64d1a26ea69718/w/dce18624986b88758f553ef8/e/471e237d23e3a462aee1418f

owen_sparks

This script may be of interest:-

https://cad.onshape.com/documents/57361ad4e4b00e5012c3857c/v/77e52ccc47a42371185767df/e/14aa44d127806651b248b9c6

Owen S.

mahir

I tried using Fill Pattern, too, but I don't think it does exactly what @paul_chrastina is looking for. There are several ways to do this, but here is one example using Split to create the border. You could also try intersecting a solid and doing a boolean subtract, which is basically the same thing. The only down side to doing it this way is that you will have to edit the boolean union at the end of the feature tree every time you want to edit the pattern. This is because new bodies are created that aren't captured by the boolean feature, so you'll have to add the new bodies manually. But if you're not editing the pattern much, no biggie.
https://cad.onshape.com/documents/d3ae914715aa4eaddb13f419/w/7f410c9ca754a934531c2797/e/b1e7c71a0c4acb896cae64a6