I’ve seen heat guns used with care to remove putty.

John

“P.S. If you do not receive this, of course it must have been miscarried;
therefore I beg you to write and let me know.” - Sir Boyle Roche, M.P.
---- Nathan Goodwin mailto:hiscarpentry@g...>> wrote:

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Is there a way to soften old window glaze to remove it? I am not sure what the
glazing is made of, but I'm thinking it's oil based.

Nathan Goodwin
H.I.S. Carpentry
Honesty. Integrity. Service.
(617)347-6744
Blog: https://hiscarpentryblog.wordpress.