On 14/04/2021 10:12, GB wrote:
Removing old very hard putty - what's the best way to do this? It's in a
Critall steel window, and I wouldn't be surprised if it's the original
1930s putty.

I've been using an old wood chisel and a hammer, but it's very very slow
work.Â* Is there a much better way? Not keen on a blow torch, as there's
probably loads of lead paint on it, but would a hot air gun help soften it?

.

Multi-tool with scraper blade?

Check Youtube for "multitool window putty"

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