Getting closer to diy mattress build, need some advice please

Hi alpharalpha,

My answer here would be the same as I’ve provided to you in the past where it wouldn’t be possible for me to tell what might be comfortable to you in a custom mattress that you’re making for yourself. Even foam experts in the mattress industry are often surprised at what a mattress feels like in “real life” versus their theoretical design, and many of them have performed this for a living for decades.

I’m guessing you mean an ILD/IFD of 34 or 44. I know you were trying to approximate the feel in a couch cushion you’ve slept on before, and to assist you in that endeavor, the Polyurethane Foam Association lists common IFD of a mattress polyfoam core and firmer seat cushions in the 30-36 range, and firm mattress cores and thin seat cushions in the 36-45 range.

If you are considering ordering from Foambymail (AKA FBM or Foam Factory and other names as well) then I would read this post and this post and this topic (about their polyfoam and sources) and this post (presumably from a past employee) before buying anything or considering them as a reliable supplier that provides accurate information about their foam products.

I would consider foamonline to be a reliable supplier and they are included as one of the better online options for polyfoam I’m aware of in the component post here .

Phoenix