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Old 04-14-2017, 08:15 PM   #1
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Cutting Spray Foam

We recently finished our spray foam job and it needed trimmed. We found an electric foam saw by Milwaukee but it was $600. Not happening.

We then purchased this saw to hand cut it, and it was terrible. The foam kept pinching the blade and not allowing it to go back and forth. Because of my need to take everything apart and mod it I decided to make a $600 foam saw for $50

The saw handle comes off with two easy screws. Then use a reciprocating saw blade to make the pattern ON THE OPPOSITE end the handle was on. Cut it out with a Dremel. It may need to be filed down to make it slightly thinner. Insert and enjoy cutting foam the easy way. Although the video doesn't show much action, once I got the hang of it it was a breeze.

I don't know why the second picture keeps uploading sideways. Sorry.

If you guys like this, please follow us on Facebook, Instagram, Twitter, etc. We also have a blog.

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Old 04-14-2017, 08:42 PM   #2
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That's sure a lot easier than the way I trimmed my foam. Good job. New inventions with danger involved. I'll be looking forward to seeing how well that works on the ceiling.

I felt like kicking the foam guy's butt for putting so much foam on my ceiling and walls.
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Old 04-14-2017, 08:43 PM   #3
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Not dangerous as far as I can tell. The foam keep the blade straight. I used it on the ceiling today. It was working ok but it would have been better with more foam. The blade just didn't have an much to bite into. Also, it's pretty dang heavy to keep above your head for long.


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Old 04-14-2017, 09:14 PM   #4
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I skinned my knuckles a whole lot a times with my sawing and there's no way to get away from the shoulder pain of working overhead.

I think you did it right.
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Old 04-14-2017, 11:11 PM   #5
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Here's a better write up for those interested...

Electric Foam Saw | Sasquatters
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Old 04-15-2017, 05:40 AM   #6
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I used a machete , cut it like butter. did my hole bus in an hour.
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Old 04-15-2017, 08:02 AM   #7
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I guess a sawzall is out of the question? I'll try the machete like Dave suggested.

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Old 04-15-2017, 10:16 AM   #8
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Originally Posted by tobeamiss View Post
I guess a sawzall is out of the question? I'll try the machete like Dave suggested.

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This whole thread is about using a sawzall...? It would never work with smaller blades though.


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Old 04-15-2017, 11:26 AM   #9
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This whole thread is about using a sawzall...? It would never work with smaller blades though.


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No, that was posed as a question. Has anyone tried using one? I wonder if that might work....but as you said, the blade is probably too short....but maybe in tight spaces.
Just putting some ideas out there.

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Old 04-15-2017, 11:41 AM   #10
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More often than not this is my go to tool.
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