I finally got a chance to spend a little time with my new Pro, and I wanted to test manual alignment on the passthrough slot. I didn’t really need a craft room sign but I did need a test project, so I came up with a goofy phrase and cut it out of cardboard. This was 1/8" corrugated cardboard. I cut it twice, glued the layers together, painted it, and dotted the “i” with a fake diamond gem. The whole thing is about 20" long.
Very pleased with the alignment. I used the method described [here]Tips for using the Pro Passthrough and here. I’d say that the offset where the two parts meet is less than 1 mm, which I think is a function of how careful you are with aligning the two score marks. Plus flatness and consistency of material.