On Jan 15 2005, 18:51, Computer Collector Newsletter wrote: plexiglass the hesitant display The biggest problem is likely to be as the drill bit breaks through. If you look at the end of a twist drill you'll see that the centre doesn't cut in the same way as the edges, and it's the force of the centre distorting the plastic as it breaks through that causes cracks. The other problem is if you don't have enough control of the drill, and the bit "snatches". Tips: use a really sharp bit drill a small pilot hole first, and maybe enlarge that to some intermediate size so the pilot hole is a little larger than the point of the final drill put the plexiglass on a smooth block of wood or spare plexiglass, hold it down *firmly*, and drill through into the wood (make sure there's no swarf from earlier holes trapped between the plexiglass and the sacrificial material) run the drill slowly enough to avoid generating heat, but keep just enough pressure on it to ensure it keeps cutting, and doesn't rub use a drill press, not a hand-held drill practice on a piece of scrap first I drill lots of plastics, some very brittle, this way. -- Pete Peter Turnbull Network Manager University of York