This is available in powdered form with a catalyst already in the mixture - the user adds water to activate the polymerization process. The other product is a liquid Melamine resin by Bordens available from Custom-pak. One merely adds the wanted proportion of resin to the UF mixture. Shell Epon 828 resin and 3140 curing agent. This means that you can heat your rod sections, straighten them, and have enough margin for error in the application of heat, that you won t have to worry about catastrophic failure of the cured resin.
Many epoxies don t soften until much higher temperatures are reached.
In many cases, the failure temperature and the glass transition temperature are only 15F apart. This means that there is little margin for error in the application of heat for straightening in these particular formulations. The downside to the EPON formulation is that a rod glued with it probably won t survive a few hours in a car window. But then, neither will the varnish. One last aside regarding epoxies.