It is not always possible to replace old windows with new ones. And the only way to update them at least somehow is to repaint. But before you start painting the windows, you must first remove the layer of old paint. Old paint is best removed with an industrial hair dryer (or a hot air gun, as it is also called), which generates a stream of hot air, the temperature of which is about 600 ° C. If you need a belt sander, then you should go to the next link. On the site you can order a belt sander at a bargain price.
Old paint under the influence of high temperature of hot air softens and anneals, it can be removed with a spatula. It is recommended to use a spatula to remove paint because it is thicker than normal and can also be sharpened. It is very convenient and practical to remove old paint with a heat gun, despite the fact that it is quite time-consuming. To remove paint from windows, it is worth stocking up with different cycles and spatulas so that you can scrape it out even from the most inaccessible places. It is not recommended to use the cheapest hair dryers, as they will not even be enough for one window. It is best to buy hair dryers from reputable manufacturers. Because they have proven themselves well, and the price of a hair dryer will more than work out. Also, do not use physical force when removing old paint, as you can damage the surface of the windows and then you will have to putty it.