Originally Posted by
Gresp15C
Agreed. I actually tried to rip off a patch on another tube where the air followed a channel formed by marking the hole with a Sharpie marker and not sanding it down enough. The patch and the tube were like a single material.
I dislike sanding. It is too easy to get poor results. Cleaning the tube with alcohol or simple green works so much better. It quickly and completely removes the pen markings and the mold release and leaves a totally black finish that is ready for the vulcanizing fluid. What is really convenient is the alcohol wipes from a pharmacy, they come in a big box for a buck or two. Easy to store on the shop shelf or a in a patch kit.