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@DaveR Can you tell me how to do this procedure correctly? I think this is producing problems for me.
I am starting here with the basic shape of the circuit board I want to house:
Now, I want there to be 2mm thick walls around the edge of where the board will be:
Of course now, the bottom needs depth so you raise both of these faces up 2mm. But I guess this is incorrect based on the coloring
Now I understand what you said earlier about extruding before outlining the sides of the box, but the problem I am having is, I am starting with the measurements of the item, and attempting to build out from there.
It seems I would need to know the final outside dimensions first, extrude, and then use the offset to bring the line inward to the size of the board.
This was done by first making the shape of the board and offsetting out by 2mm just like last time.
Then I erased the inside face, the original shape, before extruding up. I then offset in the opposite direction (inward) to get back the original shape outline.
This appears to work but feels inaccurate and wrong.