I've only just picked up on the thread about various paint-stripping products. I used to use them when they worked but now use an electric heat gun of the type sold for removing gloss and varnish etc. I only use this on cellulose paint and nothing else (don't use it if you have two pack paint as it uses isocyanate in it which is a cyanide derivative). All liquid paint strippers do is soften the paint to allow you to scrape it off which you can easily do with gentle heat. I use the heat gun on a low setting to start with and after a few minutes of gently warming a small area you can start to scrape the paint off. Eventually I can turn on to the high setting but move the heat away from the work about 5 or 6 inches (being right handed I move the gun to the left of what I'm scraping). Be careful though. What you don't want is the metal to get hot so don't blast it. If the paint begins to bubble you are getting it too hot; it only needs warming. I do wear a mask and make sure I have plenty of ventilation but it's surprising how quickly you can remove everything including the dreaded filler (which also softens with heat). One other caution is that if you have a snag of old paint sticking up and you are still applying heat it will very quickly start to smoulder, so try to get rid of these or move the heat source away. I would rather use this than a rotary wire brush as the dust tends to get everywhere.
Steve

Location: Southwest of Bath