I don't know much about changing units in BricsCAD or any other CAD program. 99.9% of my work is in inches. When I need something in millimeters, I just SELECT ALL and SCALE by 25.4. If I ever have to take something from mm to inches, I just scale by .03937.
That all blew up today when I tried to scale a sheet metal design from mm to inches. (the model is still unfolded.) The corners and reliefs were all screwed up. (Apparently the scaling process didn't shrink the junction gaps, split gaps and junction gaps. I confess I don't know anything about these things.. I select the material thickness, k-factor, and bend radius, but leave the default settings for the other stuff. I haven't even been able to find a good definition of these three things...... Can anyone here explain how to fix this? Attached are screen shots of the mm model, the conversion, and the sheet metal settings.