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Old bicycle inner tubes are
Old bicycle inner tubes are a cheap and plentiful source of strong reinforced rubber. Mountain bike tubes are best, as the tubes are nice and fat, slice 'em open, roll them out, and presto rubber sheet.
Old bicycle inner tubes are a cheap and plentiful source of strong reinforced rubber. Mountain bike tubes are best, as the tubes are nice and fat, slice 'em open, roll them out, and presto rubber sheet.
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