How do I remove about 10 layers of paint on widows?

If there is lead paint, you really should have it removed professionally. Lead paint is dangerous stuff.

The windows may be historic, but I doubt if they are energy efficient . I might paint linoleum and use the saved money to buy a new window. Best wishes!

We used a heat gun to remove ours, but can't get too close to glass, have to strip that. Very pain staking. Finally took some and had them dipped

Kelli what do you mean dipped? I haven't heard of that. And a large part of the problem is that they have been painted shut!!!!

Should not be sanding lead paint with out a respirator mask or sanding at all. It is very dangerous. Lead paint needs to be stripped and properly disposed of. Pros use stripper with Methylene Chloride. Also use respirator masks with fresh air. You need a pro or the lead particulates can accidentally spread everywhere.

Did this on 100+ yr old home. Removed the windows completely, two at a time. Removed the glass and set aside to reuse - lovely old lead glass. Then easily burned off the paint with old heat iron, now sold as heat guns. Anything left over is also easy to sand and pick off. Then reinserted the glass, added points and used caulk instead of putty. Caulk is easier to work with and lasts longer. While the windows are out, you can replace the pulley cords, waterproof the channels, and add weather stripping. I used brass ones. By the time I was done, the windows made a sucking sound when I flipped the locks. Very satisfying sound... With old fashioned storms, very energy efficient.

I would say use a stripper with methylene chloride. Heat gun would release the lead in fumes which is worse than lead particulates.