I have issues while trying to get a good alignment for printing on the 2nd side of a board. I had assumed until now that the issue was due to my error in performing the alignment. What makes me think that there are no issues with my technique is that I do not have the same issue while performing the alignment on the top side of the board.
What I mostly notice is that on the top side of the board, the drill will hit via’s dead on. While on the bottom side, unless it was a via I used to perform the alignment, printing around the via hole is almost always off by a small amount.
I am performing the alignment as best I can for the top and bottom side but the bottom side is always off for a small amount.