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  1. #21
    Bronze Member
    Join Date
    Jun 2011
    Posts
    95
    Location
    central,wi.
    Tractor
    TYM 350

    Default Re: How To Cut Half Inch Steel?

    A 4 1/2" grinder with a .045 disc will do the job. The trick is to score a line acrose then use a back and forth movement. If you try to cut straight thru in one pass the disc gets too much contact area and doesn't cut as well.

  2. #22
    Gold Member
    Join Date
    Nov 2005
    Posts
    463
    Location
    Colebrook, N.H.
    Tractor
    Kubota L3830HST

    Default Re: How To Cut Half Inch Steel?

    Just wanted to report that I got the cutting edge cut down this afternoon. I used an .045" cutoff disk in my 4.5" grinder, and it worked great. I had managed to get a nice straight groove across before the Sawzall blade pooped out, and I just kept making passes back and forth as it went down. As the blade got way down in the cut, it started to get grabby and hard to hold steady. I had the handle screwed onto the right side, I guess because I'm left-handed. I switched the handle to the left side and that made it easy to control, all the way through, untill the end flopped off. Then I switched to a regular grinding wheel and took the sharp edges off. Didn't take long at all. I set it on a couple of sawhorses outside the garage, and with a stiff breeze I didn't need a mask. Used goggles, though. Those sparks are rough on the eyeglasses. I compared the used disk to an unused one, and it had only lost 1/8" of it's diameter. It was a number 27 disk. Still don't know what the difference is between type 1 and type 27. They're both metal cutting blades.
    Thanks again to everybody that responded with suggestions, you guys are great!
    -Jim

  3. #23
    Platinum Member
    Join Date
    Sep 2012
    Posts
    851
    Location
    north shore MA.

    Default

    type 1 is just a flat disc.
    type 27 has a depressed center.
    Dan H.

  4. #24
    Platinum Member Reyer Farms's Avatar
    Join Date
    Sep 2012
    Posts
    641
    Location
    Lena, ms
    Tractor
    Mahindra 5010

    Default

    Sorry to be late, a Lennox brand reciprocating saw blade is awesome for your application. I have not used any that cut better or faster. Glad you got it cut.

  5. #25
    Bronze Member
    Join Date
    May 2004
    Posts
    70

    Default Re: How To Cut Half Inch Steel?

    you people have something against a torch? or you like doing things the hard way?

  6. #26
    Platinum Member
    Join Date
    Jan 2011
    Posts
    536
    Location
    Westmoreland County PA
    Tractor
    Fords

    Default Re: How To Cut Half Inch Steel?

    Quote Originally Posted by jimainiac View Post
    \I don't have a cutting torch, and I'd like a smooth cut anyway.
    this is why

  7. #27
    Platinum Member Reyer Farms's Avatar
    Join Date
    Sep 2012
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    641
    Location
    Lena, ms
    Tractor
    Mahindra 5010

    Default

    Quote Originally Posted by notme View Post
    you people have something against a torch? or you like doing things the hard way?
    The torch happens to be my favorite way to cut steel.

    -image-3243928742-jpg

    Not my cleanest cut ever but it gets cut again for elevation. 1"

  8. #28
    Elite Member /pine's Avatar
    Join Date
    Mar 2009
    Posts
    4,326

    Default Re: How To Cut Half Inch Steel?

    Even though I have a cutting torch I would have used the same method as the OP...merely because it would be EASIER than running out hoses and bottles and then putting them away again...for such a small task...

    And BTW...not everyone has a torch but most do have electric grinders
    Slash Pine
    blunt and succinct but sincere...in the immortal words of Popeye..."I yam what I yam"

  9. #29
    Elite Member Kyle_in_Tex's Avatar
    Join Date
    Oct 2002
    Posts
    4,428
    Location
    Giddings, Texas
    Tractor
    JD 4310,JD5420

    Default Re: How To Cut Half Inch Steel?

    Hate to say it, but if you have sparks actually hitting your goggles, you are getting plenty of metal dust. Dirty sooty boogers.
    there are 2 kinds of oats. Oats in front of a horse, and oats behind the horse.

  10. #30
    Super Member crazyal's Avatar
    Join Date
    Dec 2003
    Posts
    5,889
    Location
    Northern Vermont

    Default Re: How To Cut Half Inch Steel?

    The reason why a torch wasn't used was because the cut would have required a 4 1/2" grinder to smooth it out. If anything it would have taken longer because of how jagged the cut would have been.
    Kubota L4240,Case 580K backhoe, Case 450 Dozer

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