"Bob La Londe" wrote in message
...
"Leon" wrote in message

If both light lines were thin the accuracy
would probably be closer to 1/64".

When I need repeatability I use a back stop clamped to the table. I
always measure and mark my first center point by hand. After that it
depends on how much flex is in the DP head. I have a pretty much junk HF
DP, but I can get ok work out of it that way.

Yeah that is hat I have been doing for the past 30 years with my old DP and
will probably continue to do so. However if "quick down and dirty and no
need for great accuracy" is good enough, the laser makes the task go 3 or 4
seconds faster per hole. It is especially more helpful when using larger
forstner bits as the point is harder to see.