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[VAC] Re: Fixing Black Water Holding Tank
If the tank is plastic and you want to roughen up the surface My experience
says to use 80 grit at the finest, epoxy adheres by a mechanical bond in the
boating we used to use 36 grit to roughen surfaces. Certain plastics epoxy
will nor adhere to we used to use them for moulds. if you have the tank out
why not go to the people who repair plastic radiators and gas tanks..
Jim Smith