Cutting foam rubber neatly


Old 01-14-07, 10:57 PM
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Cool Cutting foam rubber neatly

I have an old matress made of good quality foam rubber. I would like to cut the foam into neat rectangles for seat cusions.

I can cut the foam with a saw but the edge is what can only be described as crumbly. How do I cut the foam neatly? Is there a DIY solution?

Mustang Rob
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Old 01-14-07, 11:07 PM
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Are you sure the foam rubber mattress is not too thick for seat cushions?

Foam rubber can be easily cut with a razor knife like an Xacto from the art/craft supply store. These are retractable. Get plenty of extra blades because they will dull quickly.

If you catch your wife gone and you have an electric knife, I've heard those work pretty well, too. You might not be able to carve your turkey at Thanksgiving if you dull the knife.
Old 01-15-07, 06:47 AM
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The electric carving knife is the best thing I've used
I picked that tip up from a foam supplier, who told me that's what they use in the factory
I'm sure if there were something better, they'd use it
Old 01-15-07, 06:50 AM
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...oh wait...if that's real old natural latex rubber, it does get real crumbly when it gets old and breaks down
If that's the case, it could be past it's prime

It'd have to be like over 20 years old though
Old 01-15-07, 09:03 AM
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If I may add a couple tips to cutting the foam straight. Yes, use an electric knife and draw your cutting lines on BOTH sides of the foam, so you cut it even top and bottom. Also hold it at a right angle to the foam and if you have any silicon spray, spray the blades to cut even smoother. If the foam is crumbling when you cut, it may be deteriorating and it would be best to buy new foam.
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