Originally Posted by
BluesDawg
A little more involved than I do, but I'm sure it works. By the way, the scuffing with the scraper or sandpaper is to make the patch area rough, not smooth. That gives the adhesive more surface area to bond the patch to the tube.
I have found the scuffing step very hard to accomplish with the narrow tube flexing around etc. Even getting the little rib sanded off the tube seems nigh on to impossible to me. The glue on patches seem to work okay without that step so I have mostly given up on it. If there is a trick to successful scuffing anyone please tell me the secret.