For those of you who are about to throw away your old memory foam mattress, don’t as there’s ways to salvage it and re-make it into a custom-fit circle mattress or even a custom sofa.
In this Instructable I’ll show you how I made my foam mattress round from one side, and also made the support it had underneath match the mattress. I don’t know how to modify a normal bed frame to match a custom mattress, my bed support comes from a construction site’s lifting pallets.
Also see how you can convert an old spring mattress into a sofa!

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