I've read that there is a problem re-using glass. Somehow it retains atoms of silver from a previously developed image - so it's not practical to re-use glass, because there will be ghost images from the previous photograph.
Maybe you can overcome this problem in this specific case ... if you can register the negative you are printing, so that it hits the same place as it did before.
It's in LP Clerc's Photography Theory and Practice section 388 Glass.... and he uses the words "It is almost impossible to re-coat glass from old photographic negatives"
Last edited by Bill Burk; 01-16-2014 at 08:10 PM. Click to view previous post history.