Table Saw Blade For Ridgid Foam?

 
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Old 05-04-2013, 07:33 PM   #1
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Table Saw Blade For Ridgid Foam?


I'll be doing the underside of a floor system with ridgid foam. Is there a different blade I should be trying? I'll try something cheap with a really low tooth count. I was wondering if maybe a 4 tooth hardi styled blade would be better?
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Old 05-04-2013, 07:43 PM   #2
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Re: Table Saw Blade For Ridgid Foam?


Combination blade I had in the saw worked just fine for me.

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Old 05-04-2013, 07:45 PM   #3
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Re: Table Saw Blade For Ridgid Foam?


I cut a bunch of sheets of SM with just the regular blade in my Bosch 4000 table saw and it seemed to cut fine. The sheets tended to take off scary fast when cutting solo so I would suggest feather boards or something equivalent.

I did wonder about where the dust was going and what it might do to the saw. So I ran the vac while cutting and vacuumed the motor periodically as well.
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Old 05-04-2013, 07:59 PM   #4
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Re: Table Saw Blade For Ridgid Foam?


I just did about 15 sheets of 1 1/2". I just used the 50 tooth combo blade I had in the saw. Any blade will work. Your over thinking it.
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Old 05-04-2013, 08:10 PM   #5
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Re: Table Saw Blade For Ridgid Foam?


I have used a seven inch diamond blade in a circular saw it works great and no annoying static charged foam sticking every where.
I guess it would work on a table saw if the hole would fit on the arbor
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Old 05-04-2013, 08:23 PM   #6
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Re: Table Saw Blade For Ridgid Foam?


I just use what ever is in the saw at time.
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Old 05-04-2013, 08:29 PM   #7
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Re: Table Saw Blade For Ridgid Foam?


We usually put 2" foam in our partitions when we frame. I take the full sheets home and run them through the table saw with whatever blade is on it. They do tend to flutter around a bit, but never had one kick out.
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Old 05-04-2013, 09:06 PM   #8
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Re: Table Saw Blade For Ridgid Foam?


i've cut a ton of this on a table saw with whatever blade already. just looking for a better way.

i was curious if a lower tooth count would make less sticky gum that catches and pulls the sheet.
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Old 05-04-2013, 09:11 PM   #9
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Re: Table Saw Blade For Ridgid Foam?


Make one of the wire cutter tools.
Its electric, 8' wire in a jig that goes up and down. It just melts through it.

A mason Around here has one.
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Old 05-04-2013, 09:12 PM   #10
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Re: Table Saw Blade For Ridgid Foam?


Quote:
Originally Posted by duburban View Post
i've cut a ton of this on a table saw with whatever blade already. just looking for a better way.

i was curious if a lower tooth count would make less sticky gum that catches and pulls the sheet.
There is, a hotwire cutter.
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Old 05-04-2013, 09:13 PM   #11
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Re: Table Saw Blade For Ridgid Foam?


i had such a bad experience with a SIP hot knife i'm not into melting foam anymore! i was down low in a corner and took in so much smoke i could feel the cancer landing.
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Old 05-04-2013, 09:27 PM   #12
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Re: Table Saw Blade For Ridgid Foam?


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There is, a hotwire cutter.
YeaH that thing
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Old 05-04-2013, 09:31 PM   #13
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Re: Table Saw Blade For Ridgid Foam?


so what happens with the diamond blade?

i'd like to set something up that my teenage brother could do alone while i'm down in the hole. shooting board, diamond blade or regular blade in a circ saw sounds safe enough...
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Old 05-04-2013, 09:44 PM   #14
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Re: Table Saw Blade For Ridgid Foam?


Just rip it with a combo blade. The trick is a steady feed rate. If you go too slow it melts and will get gummy and or grab. Run a vacuum too.
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Old 05-04-2013, 09:54 PM   #15
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Re: Table Saw Blade For Ridgid Foam?


Maybe you could buy a blade from one of those deli slicers and modify the arbor?

Or you could just shove it through whatever you've got.

I made a table mounted hot wire cutter for ripping thousands of feet of 4" foam at various angles. It sucked. You have to wear a respirator and who really wants to move their hand towards a scorching hot electrified wire?
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Old 05-04-2013, 09:54 PM   #16
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Re: Table Saw Blade For Ridgid Foam?


you guys know this stuff comes pre kerfed for snapping? i just remembered that. a friend of mine was using it to cnc a model and there were these streaks through it that were put in for snapping. it was owens coring pink.
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Old 05-04-2013, 10:00 PM   #17
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Re: Table Saw Blade For Ridgid Foam?


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....and who really wants to move their hand towards a scorching hot electrified wire?...

Who in their right mind would move their hand, to within fractions of an inch, of a sharp. multi toothed blade spinning at 3-4000 RPM?..
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Old 05-04-2013, 10:12 PM   #18
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Re: Table Saw Blade For Ridgid Foam?


http://www.amazon.com/Festool-493656.../dp/B0033LBOJY

cuts up to 5" of material, i bet theres hardly any dust too.

Last edited by duburban; 05-04-2013 at 10:17 PM.
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Old 05-04-2013, 10:14 PM   #19
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Re: Table Saw Blade For Ridgid Foam?


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Who in their right mind would move their hand, to within fractions of an inch, of a sharp. multi toothed blade spinning at 3-4000 RPM?..
My friend Stubby does it all the time....

I know what you're saying but the hot wire cutter extends a lot higher and was a lot harder to work around than a blade that extends 1/4-1/2" above the material.
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Old 05-04-2013, 10:14 PM   #20
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Re: Table Saw Blade For Ridgid Foam?


Quote:
Originally Posted by duburban View Post
Who would want to cut several hundred feet of foam with a sabre saw...

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