Most of probably don’t realize that a mattress can be sawed, hacked into smaller pieces to make new furniture.
Well, we found a great set of instructions over at instructables that show exactly how to convert a mattress into a couch by first cutting through the spring boxes and the mattress, then sewing all of it back together.
The only hard part seems to be where you need to cut the metal springs. And btw, every mattress has a different kind of spring coil, meaning if you have “independent” spring coils, it’s going to be a lot easier to hack it. Plus many independent spring coiled mattresses probably don’t need spring cutting.
The overall plan is to cut out a middle section of both the mattress and the box springs leaving two ends for each of the same size. Then closing up the ends and sewing covers for them out of canvas and upholstery fabric. The basic idea is pretty simple but it is a bit of work and requires both a Dremel tool (or something to cut the metal springs) and a sewing machine.