Remove the zip cover and any lining on the mattress foam.. Use measuring tape to determine where you should cut the foam.. Mark the line you want to cut with a marker.
Remove the zip cover and any lining on the mattress foam.
Use measuring tape to determine where you should cut the foam.
Mark the line you want to cut with a marker.
Elevate the mattress foam so the marked line doesn't have anything under it.
Use an electric carving knife to cut the foam if you want a clean edge.
Try a regular kitchen knife if you don't want to get an electric one.
Hold the knife at a 90-degree angle to the foam at the edge.
Cut along the marked line using an up-and-down motion.
Repeat on the other side if the knife doesn't go all the way through.
Double check your measurements using measuring tape.
Smooth out any jagged edges with a knife.
Put the new or altered zip cover over the mattress foam if you'll be using one.
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