I’m getting conflicting information on the feasibility of heat staking a urethane casting.
One guy says he’s done it.
Another guy says because is it’s a urethane (made by blending isocyanate and polyol), it won’t melt the way thermoplastics do, thus heat staking won’t work.
There are thermoplastic and thermoset urethanes. The term casting, and the isocyanate-polyol reaction, implies that it is a thermoset and therefore staking will not work.
Above is a snippet.