I'm a new rider and today was my first experience using patches. I used the Rema Tip Top patches and they seemed to work very well. My question is about the sanding procedure, though.
My understanding is that you need to sand so that the waxy coating is removed from the tubes because the manufacturers put it on to remove the tubes easily from the mold.
When looking at the tube, I can see the waxy layer. But when sanding I noticed that the shiny surface first turns a little white. Then if you sand a little further, that white layer goes away and you get a very dull surface, but can sometimes get a little bit of the rubber from the tube coming off if I go to hard.
My question is, am I supposed to stop at this first "white" layer, or am I supposed to go down to the dull looking layer? For my patches today I went all the way down to the dull layer and boy did they stick well, but I wondered if I went too far and weakened the tube in that area and possibly cause myself future potential problems?
Thanks for the help. I really appreciate it.