Yeah, I really didn’t do much except think out loud. Sometimes that the best way to learn.
The method I show explains why you shouldn’t use it. It’s too easy to introduce alignment errors when you flip your workpiece, especially if you don’t want to re-zero.
@Chucky_ott It was a worthwhile discussion, I think.
The beauty of the alignment pin method is that you do not ever reset XY0. So, there can be no misalignment. You need to be sure to flip the material in the direction that you set in VCarve in the material setup process. You can ensure that you flip the material correctly by placing the dowel holes in the material asymetrically. An error will be painfully obvious if you flip the material side to side, for example, when you have set VCarve to be top to bottom.
@Jens If your work piece is large, I’d use more registration pins than just the two you mentioned before.
I think the easiest way to do this in fusion is to use two set ups and two work offsets. For example you can use g54 to machine op 1. Placement on the table is arbitrary, though you need to add the registration geometry in the part for op 2. Assuming you have the dowel locations (or whatever registration points) machined in the table, you can then flip the part and use g55 for op 2. As long as the origin and orientation of g55 matches between fusion and reality then it doesn’t matter where it is relative to g54 or where the registration holes are in the part.
Just finished watching both videos and they are indeed very detailed including the dowel hole situation.
For the particular 2 sided carve jobs i normally do, i create a fixture to hold the work for the second side job. The zero for the fixture jobs is the lower left corner of the fixture. I use separate workspace offsets to kind of do an assembly line thing. Something else I have been doing lately is modeling my stock instead of defining in the setup and preparing the stock to dimension. Any time I use dowels I make them symmetrical on the stock model and only probe z on the second job.