Hello Eric. I use a wire wheel cup on my 4 inch grinder. Take all the lose
and scaley rust of. Get the shop vac out and vac the floors clean. Also
remove and oil or grease. Get a quart of POR 15. And paint the floor with a
brush. First coat will seal and fill in all the pits. Then put a second coat
on. With POR 15 you can lay down fiber glass and paint over it. The POR 15
acts like the risen. You'll have to tap out any bolt holes. There is company
in NJ that ships free. Saves some. This paint is about $30 a qt.
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