Hello!

I am preparing 3D models for tube laser cutting. I have problem with normalizing the faces. The smaller pipe intersect bigger pipe at angle. I need to compensate the under and over cut for thickness of the tube. one side i did no problem, but other side doesn't work and i believe they are the same just inverted. If i add weld gap at trim/extend, the working side also break apart. Please help, i have more than 300 holes like that to resolve. i was working by these steps: https://www.youtube.com/watch?v=s_9CJ0BVYOY