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Unread 29-01-2009, 10:23
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Re: Friction-increasing substances

We found some spray on insulating rubber paint, designed for tool handles and such. Applied to ABS pipe (after sanding the pipe so it sticks better) it seems to do a great job of increase friction on the balls, and does not leave any residue like rosin would.

http://www.youtube.com/watch?v=IqXdL74tVzc