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  1. #61
    Gold Member
    Join Date
    Jan 2010
    Posts
    309
    Location
    New Hampshire
    Tractor
    Kubota 4310 Kubota RTV900

    Default Re: How To Cut Half Inch Steel?

    The rectangle was cut on a small 4 x 4 cutting machine with a 45 amp Hypertherm air plasma. You can cut just as well with the hand torch on the same plasma...lay down a straightedge, guide the torch (with the drag shield laying right on the material to be cut) and steadily guide the torch. The cut is a smooth as the motion.....coffee helps. Picture I posted earlier of the log splitter wedge...the wedge was cut on the same cnc machine with the same plasma....except for the beveled edges...which were cut by hand guiding the torch with a straight edge.

    Jim Colt

    Quote Originally Posted by xring100 View Post
    Wow I don't think i could use a cut off wheel and hand grinder and get a cut that smooth

  2. #62
    Elite Member Redneck in training's Avatar
    Join Date
    Nov 2008
    Posts
    3,103
    Location
    South Central Iowa
    Tractor
    TYM 330 HST with FEL

    Default Re: How To Cut Half Inch Steel?

    Quote Originally Posted by jimcolt View Post
    Attachment 303919Plasma cut on 3/8 steel. I wouldn't call it terrible and I see no need to grind it. Cut with a Powermax45 from Hypertherm. 30 inches per minute cut speed.

    Jim
    Hi Jim,
    I am in planing stages of purchasing plasma cutter for my shop. Hypertherm Powermax 65 or 85 is my first choice. What torch was used to cut the steel in your picture?
    Is CNC interface standard on or has to be ordered as separate feature?
    Ladia.

  3. #63
    Gold Member
    Join Date
    Jan 2010
    Posts
    309
    Location
    New Hampshire
    Tractor
    Kubota 4310 Kubota RTV900

    Default Re: How To Cut Half Inch Steel?

    The pictured cuts were done with a Powermax45, however the Powermax65, 85 and 105 will cut exacly the same using the 45 amp nozzle. The 65, 85 and 105 have an optional CPC interface connector....it can be bought with the machine (if you get the mechanized torch version, or can be added at any time as a kit for about $100.

    Jim Colt

    Quote Originally Posted by Redneck in training View Post
    Hi Jim,
    I am in planing stages of purchasing plasma cutter for my shop. Hypertherm Powermax 65 or 85 is my first choice. What torch was used to cut the steel in your picture?
    Is CNC interface standard on or has to be ordered as separate feature?
    Ladia.

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