ORIGINAL: strippersteel
More pictures of it finished(hopefully). If that rubber coating spray doesn't work then I don't know. I'll give it a test either tonight or tomorrow with the tanks.
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This may be a dumb idea as well as a pain in the butt waste of time, but how about really coarse sand paper? And then spray it with the rubber coating? Or spray the rubber first and then sprinkle sand on it. I appreciate your problem and I am just throwing out ideas here. I may experiment with these suggestions myself today to see if any of these ideas work out in real life.