External Internal Contours?

[Cumberland]

As you can see it is not working:

Merge surfaces together into single one?

Another day, another issue. I run this definition Merge_surfaces_in_one_piece.gh to extract the contour from some pieces I needed to mechanize today and I realized that this method don’t work with pieces that have fillets or chamfers. It is a way to just “squash” or project all the surfaces into a single one and extract the overall contour of the shape? I tried also with Make2D but for pieces that have pockets that are touching the exterior contour it is joining the exterior contour with the po…