The usual mistake is to put the patch on when the glue's still wet. You have to wait until it's almost dry, just a bit tacky to the touch.
Using a lighter - set fire to the glue for a few seconds, then blow it out, this makes it tacky very quickly and it sets much faster.
I gave up on puncture repair kits over a decade ago, I use the little Park Tool glueless patches, I have one patch on an old mountain bike tube that has lasted 11 years (!!) and still going strong.
Using a lighter - set fire to the glue for a few seconds, then blow it out, this makes it tacky very quickly and it sets much faster.
I gave up on puncture repair kits over a decade ago, I use the little Park Tool glueless patches, I have one patch on an old mountain bike tube that has lasted 11 years (!!) and still going strong.