I need to rebuild my seats as I'm taking a different approach. I want to keep the same sort of rigidity that the donor seats were (MX5), but I'm not sure what foam was used. It's not a squishy foam like a chair or settee foam, it's probably only one degree away from being completely solid.

I believe what I'm looking for is polyurethane foam, but when I google for it I can only see the expanding stuff. I had one experience of that when I was doing my house windows and I'd be more than happy to never see that stuff again. But I don't think that's what I need anyway.

What should I be looking for, what is this almost solid foam that I can cut and mould to fit my a$$? Would the 2 part foams that are used with bin bags get me something to work with?

It’s upholstery foam, there are many many different types so you would have firm foam for the base layer then a bit more give for the top and a very different type as an over skin between the cover and the foam.
It’s very much a “how does it feel” thing

Hi,

This is the foam we use to shape the body of our pilots in the seat of our LMP3 car at work:

https://www.demon-tweeks.com/uk/indi-seat-kit-737075/

A bit expensive, but professional stuff.

Hope that will help

quote:

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Originally posted by snapper
It’s upholstery foam, there are many many different types so you would have firm foam for the base layer then a bit more give for the top and a very different type as an over skin between the cover and the foam.
It’s very much a “how does it feel” thing

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