What a pain!
I'm doing my 1st build and picked up an older Giant Sedona (aluminum frame) to use. The paint wasn't in very good shape so I decided to repaint it. For various reasons I didn't want to use a chemical stripper so I took some sandpaper to it. After quite a while I had a very small spot clean a very sore arms! So I got a wire wheel and got to work. Better, but still gawd awful slow! My fingers are numb from the drill's vibration and I'm only about half done. I have to restrain myself from taking a grinder to it! Pray for me. LOL!!