Hi again Searing!
It looks like the photos came through this time with no issue! I am glad I delayed responding to you as I enjoyed looking at the construction breakdown sketch. I can see that the foam perimeter around the coil unit would help provide for a firmer edge reinforcement.
AG have their own latex at a facility and with a supplier in southern India. It certainly makes for an interesting read that information here for you.
[quote] Mario from MFC figures I will have a hard time getting close to the softness of the original mattress with Dunlop
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I agree with Mario, he’s got decades of experience working with foams! Talalay has a softer feel You can see a comparison between them in post #7 here but your own experience is really the only way to know which one you prefer with any certainty. You will “feel” more of the upper layers than the deeper layers … at least when you first lie on a mattress
With polyfoam … density is a “quality spec” and has little to do with the foam firmness. The density of polyfoam is the single most important factor in its durability but any density of polyfoam can be made in a wide range of firmness levels so you could have low-density firm polyfoam or soft polyfoam or higher density firm polyfoam or soft polyfoam. The specs that will have the biggest effect on the firmness of a polyfoam layer are the ILD/IFD of the foam (which would be the “simplest” method of comparison), the compression modulus of the foam, and the thickness of the foam.
Look forward to any updates you might have with the rebuild project.
Phoenix