Hot wire works beautifully with a jig or template. Cuts equally well in all directions, IOW a mother to control freehanded. Smells like burning styrofoam, best done outside.
Cutting 3.5" foam insulation board
Nov 03, 2012
23 Replies
and use 781 dry silicone to help the knife glide through the foam easily. = =A0 I don't know about foam insulation. =A0Might try some 781 dry silicone = to help the knife glide through the insulation. =A0Should be available at y= our local upholstery supplier -
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whisk a light coating onto the knife bl= ade and cut away.
Paste wax works fine.
For 1", use a nice little linoleum (or other hawkbilled) knife.
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Firefighter kerambit (in my truck)
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rigging knife (in my backpack)
-- While we have the gift of life, it seems to me that only tragedy is to allow part of us to die - whether it is our spirit, our creativity, or our glorious uniqueness. -- Gilda Radner
Old beater-grade panel saw. Strip the teeth, file to a knife edge. Wax. Should almost melt its way through without making dust.
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