I can't subtract the surface when i try to import profile from dwg

[beermullet1]

Hi. I have an issue about subtract command and still can’t put off the second componant that come from on my dwg import to the model
SS-X103-001.dwg (105.4 KB)
test.skp (587.5 KB)

Please kindly help us to fix this issue

[DaveR]

There’s a lot of small geometry in your model. More after using Subtract which will be a problem. Convert the extrusion to a component, copy the extrusion and the cylinders and scale the copies up by 1000x. Then use Subtract from Eneroth Solid Tools or Difference from Bool Tools 2 on the large copies to create the holes.Don’t use the native Solid Tools. After you’ve finished delete the large copy and return to the original one.

[Box]

You could also adjust the import options to cm, make the edits, then scale the result down by 0.1