I know I had asked a long time back on how to get the engraving where it was supposed to be in relation to the 0,0 corner, upper left on my ULS machine. So... I took a brush and the last drops of my Cermark and put a few dabs on the table itself, then engraved a few segments of lines at X 1.0 and Y-1.0. Wiped up and had some nice precise lines and using a 123 block (I'm a retired machinist and we use these a lot) loosened my scales and moved things to be in line with the engraved marks as best possible.
Locked everything down and then engraved a 1" x 1" square with the upper left corner at X1.0 Y-1.0 and then checked with calipers to see if the box was really 1" and 2" away from the two edges. Near as I can tell I'm within about .005" now, Y was off .060" and X about .010 prior to this.
Should make it easier to hit position and result in less trial and error.
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