1 1/2 pink foam insulation

I need some ideas how others cut through pink foam insulation, A regular utility knife don't get all the way through, and leaves a rather jagged edge. Thanks Craig
 
If you have any curves, your wife's electric bread knife. Seriously. For straight cuts, get a large click knife.
click%20knife.jpg
 
Farmall plowboy,

We used to use a fine toothed blade in the table saw.

I also saw a hot-wire type soldering gun for outlet openings and such, but tht was a few decades ago.

D.
 
I take an old sawsall blade and sharpen it on a grinder to have a sharp edge like a knife. Then just use it on the foam. It makes cutting the foam easy.
 
I did some in my storage building a couple of years ago. As I recall, I just used a sharp hunting knife. Took a couple of passes, but it worked. The key word is "sharp".
 
You might get yourself an old butcher knife and sharpen it. Might also use a metal cutting blade on a sawzall. Could also use a jab saw. If you have to have the edges smooth you might use a template and a plunge router with a straight cut bit.
 
Similar to what others said, I use a cheapo dollar-store kitchen knife I had laying around. It's got a 6" blade and the blade is very thin. I sharpened it on the belt sander with a fine (320, if memory serves) grit belt and it works great. The blade length lets you do the full depth in one pass, the thinness of the blade displaces the least amount of material, and the sharpness makes for a clean cut. I've done hundreds of feet of cuts with it and it's still sharp (and if it dulls, 30 seconds on the belt sander will bring it back--the foam cuts easily) and it was certainly cheap enough to begin with. I'm sure anything similar would work as well, it's just what I had around.
 
(quoted from post at 11:45:17 01/21/17) I need some ideas how others cut through pink foam insulation, A regular utility knife don't get all the way through, and leaves a rather jagged edge. Thanks Craig
oogle search hot wire foam cutter and see if you may want to build one. They work very well.
 
Thanks to all for the suggestions, table saw is out of the question to far from job site, probably will look for a big snap knife or a cheap kitchen knife, Thanks again for all the ideas...Craig
 
That's good not to use a table saw on sheet foam. Foam is about the most dangerous thing you can cut on a table saw. The stuff kicks back in a blink of an eye without any real warning.
 
serrated edge steak knife or bread knife- what amounts to a small saw blade with handle. Good for cutting out switch plate holes, sometimes pipe holes, or a cable hole in foam insulation. RN.
 
Get a 18 volt battery operated skill saw. I have a makita 18 volt and have been cutting all thickness of foam with it, I even cut 4 inch foam with it I just have to cut from both side that way I get a clean cut and a tight fit. You will never cut foam with anything else ever again, I have been using a makita saw for over 3 years cutting. Once you own a 18 volt battery operated saw you will never use a corded skil saw again, I also cut pvc pipe with it and also rubber belting and mud flaps. the 18 volt saw run at a lower rpm than a skil saw.
 
I use an old 18 tpi Power Hacksaw Blade. Made a wooden handle for it & rivited the handle on with Brass rivits. Sharpened the back edge so it's like a knife edge & honed it on a Diamond Hone. Use the toothed edge for cutting High Density Foam (cuts on the PULL stroke) ; and the knife edge for cutting lightweight Expanded Foam .

Doc :>)
 

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