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3/4 inch

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  • 3/4 inch

    Looking to round off the edges of 3/4" steel on my tractor loader arms. Will an Oxy Acetylene torch be enough? What size nozzles do I need? Any other things I need to think about as a newbie? Thank you. Paul Pec

  • #2
    Welcome to the group Paul. I'm not totally understanding what you are needing to do. Are you talking about cutting 3/4" steel flat bar to make the end round? If so, just about any O/A torch will do that. Just be sure to never run the acetylene over 15 psi MAX. The oxygen isn't as limited. 40-50 psi will probably do anything you need. Please clarify what you intend to do and we'll jump in and help.

    Miller MM 210
    Miller Dialarc 250P
    Airco 225 engine driven
    Victor O/A
    Lots of other tools and always wanting more


    • #3
      if you are talking about cutting you will need a 1 tip and the acetalene pressure should be 3-5psi and the oxygen pressure should be 30-35psi


      • #4

        Gentlemen, Thanks for your prompt responses.


        • #5
          oxy acetylene

          All right. Was able to cut what I needed, but not sure if I was doing it right. How far away should the torch tip be from the material being cut?


          • #6
            The tip of the inner cone of the flame shall be about 1/8" above the metal.

            Take a look at the brief description of the procedure here: (chapters C and D may be of interest to you)
            Last edited by MichaelP; 11-10-2008, 05:24 PM.


            • #7
              oxy info

              Nice resource for a beginer. Thanks.


              • #8
                tip help(3/4&quot

                hi paul i have gotten alot of help from they have a easy to follow operating oxy/fuel set . also
                and j&r welding supply has alot of info. i take a laminator and laminate them once i print them out so easy to reference but oxy/acet for 3/4" is #1 tip size cutting O2(psig) 30-35 cutting O2(scfh) 80-85 acetylene (scfh) 8/13. But remember NEVER to go over 15psi on acetylene... 1/8"-000 tip w/ 20-25 cutting oxy. 1/4"-00 tip cut oxy at 20-25psi
                3/8"-0 tip 25-30 cutting oxy 1/2"-0 tip with 30-35 psi cut oxygen. hope that helps.


                • #9
                  3/4 inch

                  I am going to assume you are taliking about chamfering the edges of your loader arms. Not that hard for a beginner to do. Go easy on the oxy and grind off the slag,and i think you will be truly pleased with the results