OK, you talked me into it... I did some tests on a pair of 16C57's with the following results. 2 minutes in my old eraser - part read back as not erased 2 more minutes - parts read back as erased! I think in the future I'll give the 5x parts about 6-8 minutes unless I start having trouble erasing parts. Also, I think I was over-estimating the time I was taking before, instead of 45 minutes it was probably more like 20-30 minutes. I never really paid attention to how long it took. ______________________________ Reply Separator _________________________________ Subject: Re: Re[2]: UV Pic problem (use a hairdryer!!!) Author: lrich@QNI.COM at internet Date: 12/20/96 5:23 AM > > I don't have any problem with heat buildup, and I have had very little > > problem erasing 16C5x parts with about 45 minutes exposure. I might > > be able to go shorter, but I haven't done much experimenting in that > > area. > > > 45 minutes to erase a 16C5x part? 2 or 3 minutes (for the _5X_ parts) is to > be expected on a reasonable eraser. May be you should be doing some more > experimenting or perhaps you do have a problem after all. > > Jim >