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Originally Posted by squirrel
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Looks like you are getting closer. We have found mixed results.. its very sensitive to the friction on both the rug and soccer ball. Some balls stick like crazy to both the rug and roller and stall the roller. Others hardly stick. We have fooled with different roller surfaces and geometries but I think our rug must be too sticky compared to what I see in your video. So we have a design that will prevent roller stalling and is tolerant of friction variations...maybe.
In your video you mentioned shelf paper. How would you legally bind that to a roller?