Originally Posted by RainmanP
If you are talking about tire liners like Mr. Tuffy someone at an LBS showed me how to smooth the edges by gently heating with a lighter until you can smooth and feather the edge with your fingers.
I do the same. I used a belt sander to bevel the ends I think.
I've been using Mr Tuffy for years and years too. Way less flats, especially on the mtb. Any road flats have been outside the Mr Tuffy on the sidewall. I wish I would have bought slightly wider liners. But I've since been using a kevlar belted tire w/o the liner with complete success. Time will tell.