[Richard]

My thoughts are that I am probably going to do this on my own sway bar bushings. I replaced mine about 3 years ago, but they are showing signs of minor distress. The only ones I could find are split to allow you to slip them over the bar. I don’t like the design. The bushing is starting to squish at the slit for the split.

I think the approach I will use is to learn how to use some simple 3d modeling and dimension the bushing. Then I will send it to a 3d printer and have some molds made. The idea is to make the mold thin enough to simply fracture it away from the part after curing. Coat the mold with a release agent before pouring in the liquid urethane mixture. It is just not on my right now list right now.

The purpose of the oven is to speed up the cure. A chemical reaction rate doubles for every ten degree rise in temperature. If you are willing to wait a week, the reaction will complete at ambient and you won’t risk contaminating the toaster. And yes, you are correct the cross linking between the molecular chains is exactly what is going on in the cure.