Always try Radio Shack they have a small circuit engineering book and the
components enough to get you going..... It's simple enough in most home type
environments, but in a shop with dust and dirt you'd need a blower to keep
the lenses and the work piece clean and you'll also have variations on wood
color and knots of such. As for black paint, I'd go with a black or colored
sticker (it's consistent). You'd have to shield it somewhat from ambient
light too. You could consider a barcode reader system that not only triggers
the alarm but will also identify the work order/owner/piece and could be
incorporated in your billing.


"Joe AutoDrill" wrote in message
newsn6Ag.2744$sy2.1276@trndny01...
Good hot afternoon.

102F with a heat index of 125F here in NJ today... Death Valley, eat your
grilled heart out...

I've got a customer who wants to drill longer pieces of lumber - 10' to
20'

He doesn't want to use TigerStop to automate the process because it is a
bit slow and/or the holes are in different places from log to log. He was
thinking of manually or automatically marking the logs with black paint to
show where the holes had to be drilled. Then a photo eye or something
similar would see the mark and trigger an alarm of some sort to the
operator that they are in the right location to start the automatic drill
I'm selling him.

Question... Anyone know of a product that would allow him to do something
like this? Any other ideas?

Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills: http://www.AutoDrill.com
Multiple Spindle Drills: http://www.Multi-Drill.com

V8013-R