I need advice. This is the mark created by laser and is used for the location welded parts. I can place these marks on a 3D model of the cylinder. I would need that after flattening these marks appeared on the flattened part.
You may still do them modeling them as cuts with the Normal Cut option selected to insure they flatten and they are positioned with respect to your bend allowance/flattening processes. On your drawing I would suggest you create new layer, Phantom. Change your linetype to Phantom in that layer. In your flat layout view you can just select those 'cuts' and 'move' them to the Phantom layer.
I would guess you could just cut holes through, on export to your laser you have to set them to a different layer or 'mark' them for etching anyway.
You may also create them as a sketch after flat pattern and like Bernie advised, mark them for etching.
thank you for answers, but...This is a job for an external company. Their process technology and production requires that the drawing looked like this. Marks on this drawing are displayed with phantom line style. I did it so that I draw after flattening, but you see, it's complicated. I am afraid that after creating holes, it would be the sheet could not be flattened.
Add the holes after flat pattern so that there is no issues.
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