OK, I've been watching this for a while and guess I.ll throw this out.  In
a previous lifetime, my family business did window replacement as part of
the overall operation.  We had a putty heater for removing putty that I
still have.  It was a commercial product that is still available, I think.
I still have the last one we had and am willing to sell it to someone if
there is an interest.  I'm too old to replace glass anymore, so should just
go ahead with divestiture.
The way they work is they have an electric heating element with ceramic
surrounding it that directs the heat to the putty.  If you linger too long,
it can crack the glass, but used with care, glass can be removed without
damage.  I'm not really doing a selling job to anyone, just passing on
information.  If we happened to be on site where electricity wasn't handy,
we would frequently use propane torches with the smallest outlet available,
but that was usually when the glass was already broken and it didn't
matter.  We did have one guy that had done enough of this work that he
could use the torch and rarely break a glass.  Any way, just agreeing with
others that there is more than one way to do this and I have a way that
hadn't been mentioned.
Bruce
Des Moines, IA

On Wed, Oct 24, 2018 at 3:36 PM Nathan Goodwin 
wrote: