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General Mach Discussion / Re: Mach3 2-sided pcb milling. Centering with Y-axis width from G-code pattern.
« on: August 17, 2018, 04:15:49 PM »
Impressive site!! Thanks Craig. I will be looking for short 3mm diameter drill bits from there. That store is selling good quality items.
Yesterday, I decided to go ahead to try adding 0.6 mm offset to my y-axis (for curiosity) on the flip-side (bottom) mill. I hit the jackpot this time - nice alignment on the two sides of the board after pad hole drilling. The very nice thing is that the offset discrepancy is constant, so at least the pattern locations are repeatable. The four registration holes themselves have no issue, which is interesting. I flip the board over, and the 3mm dowels fit it snuggly - both sides of the board, and I can pull out each one after clamping without brute force method. There was a time (before I knew about the need to square-up the x and y axis) where the board registration holes (on the flip-side) didn't line up with the drilled holes in the waste-board --- due to the two axes not being square enough to each other.
Thanks again for link Craig!
Kenny
Yesterday, I decided to go ahead to try adding 0.6 mm offset to my y-axis (for curiosity) on the flip-side (bottom) mill. I hit the jackpot this time - nice alignment on the two sides of the board after pad hole drilling. The very nice thing is that the offset discrepancy is constant, so at least the pattern locations are repeatable. The four registration holes themselves have no issue, which is interesting. I flip the board over, and the 3mm dowels fit it snuggly - both sides of the board, and I can pull out each one after clamping without brute force method. There was a time (before I knew about the need to square-up the x and y axis) where the board registration holes (on the flip-side) didn't line up with the drilled holes in the waste-board --- due to the two axes not being square enough to each other.
Thanks again for link Craig!
Kenny