Google says this is best done with an electric carving knife.
Cutting foam mattress with bread knife.
Use an electric carving knife to cut the foam if you want a clean edge.
Electric carving knives are usually used to slice through food but you can also use one to easily cut your mattress foam.
How to cut a memory foam mattress or mattress topper.
Work slowly so your cut stays straight and accurate.
If you need to know how to cut a memory foam mattress topper you can measure the mattress too if you are cutting it for a pillow crosscheck the dimensions with those of your pillowcases.
Memory foam is a space age material often used for mattresses and mattress toppers.
Cut along the line again if the blade didn t go through the foam.
Put the carving knife blade at the end of the cut again and follow along the line again.
Determine the cutting dimensions.
Have had ds loft bed shortened to fit his room and now have problem of getting a mattress to fit.
It s the dumb way to cut foam.
While comprehensive scientific studies are lacking evidence suggests that memory foam mattresses improve sleep and are helpful against back pain.
With a measuring tape take the dimensions on the memory foam and add an extra 1 8 inch to cut along.
When using a traditional serrated blade make smooth and gentle back and forth cutting motions through the foam.
If you re cutting through a thick piece of memory foam your knife blade may not cut through it completely.
Option one is a serrated carving knife or bread knife.
It was time consuming messy far from accurate and doing the curves was a real pain.
As mentioned earlier cutting foam is essentially the same as cutting bread so it only makes sense that you would use the same type of knife as well.
It can be hard to find memory foam mattresses pre cut to fit your requirements.
Because the serrated edges of the knife saw back and forth when it s plugged in you can get a cleaner straighter edge with it.
Am considering getting an ikea foam mattress and just lopping the end off it.
I know you can get special size mattresses made but they seem horrendously expensive.