I'm stripping some paint from a very old door in my house - it's probably about 120 years old. Given the age, it's picked up several layers of paint over the years. I've already stripped the skirting boards that are of a similar age with no problems: the paint just peeled right off.
On the door, however, the paint is coming off in a rather inconsistent way. The top two layers seem relatively thin, and are coming off without too much hassle, though the paint is turning into what seems more like glue than paint as it's coming off. The lower layers (pictured) are much harder to get off (in other words, it's not coming off in one go).
For the lower layers, even leaving the heat gun on an area for a little while, the paint doesn't 'bubble' and just softens (or comes off unevenly, as in the picture). As a result, I'm having to be quite rough with it to remove it, essentially using the heat to soften it up and then scrape it off manually with force.
I was wondering, is there anything I can do to make this easier? Or is it just the case that the many layers and years on this door will mean I just need to keep going? I'd just like to get rid of the paint enough to make it sufficiently smooth to fix some of the knocks and dents in it, and then re-paint.