The other day I dropped my blue natty's and the 1/4" that was left broke into about 10 little pieces. Could just boil the can for a few minutes to turn it into a liquid and then let it harden.
I do not know for sure but if it were me I would give it a shot. With 1/4" left you do not have much to lose if it does not work and I know it can be a pain in the a$$ to work with small pieces when trying to apply a wax.
Well the other day I tried it and it seemed to work. It looked like the day that I bought it. I haven't had the chance to use it yet took the week off ( getting real cold here in WA).