Question: How to rough up the rubber on a inner tube to get a patch to stick.
Options:
Use the very fine end of a sharpie to roughen up the rubber on the tube to give the patch a good hold.
Use the very fine part of a cheese grater to roughen up the rubber on the tube to give the patch a good hold.
Answer: Use the very fine part of a cheese grater to roughen up the rubber on the tube to give the patch a good hold.