Can you remove poly finish from guitar?
I've found the best way to cleanly and easily strip polyurethane finish of this type is to use a hair dryer or heat gun and a flexible putty knife (Photo 3). Lightly scoring a starting point in the finish with a sharp putty knife will give you a good entry point once the finish is heated.
How do you remove glossy finish from guitar?
To remove this glossy buildup, rub the back of the neck with 0000 steel wool. This will leave the neck feeling smooth without that sticky sensation. Remember, only use 0000 steel wool. If you use more aggressive steel wool (000 or 00) you'll run the risk of rubbing through the protective satin finish.