Getting an edge when using paint stripper

I'm using paint stripper for several projects. For one project I'm stripping a window sill that is flaking badly. The rest of the window trim is fine and I don't need to strip it. Does anyone have a technique to strip up to an edge using paint stripper? I'm guessing that painter's tape isn't going to work, because the paint stripper will just eat right through it.
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Don't guess...try it out and then you'll know. With all the combinations of tape and stripping compounds you might just find find something that works the way you want it to. Good luck.
Joe
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Ben Mills wrote:

I would go close to the edge, protecting the upright wood with tape, and clean up the remainder of the sill by sanding. I have done lots of paint removal, and don't know anything other than metal or glass that won't let it seep in or through. Before stripping, I would cut a line at the joint between the sill and upright with a sharp utility knife - if you then try gently scraping the ends of the sill up to the scribed line, the paint at the end might chip away without affecting the upright.
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