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Proper marking of big pipe to cut straight

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  • Proper marking of big pipe to cut straight

    The project I have at hand isnt desperate to be a perfect cut. I just want to know when I get one that is. 6in exhaust pipe for my semi. I need to shorten the pipes. What is the best way to mark and cut when you dont have a big enough saw? I have a sawzall and a portaband, both too small to do the job without going around the pipe. Id like not to end up with an angled mark or cut. The baloney cut belongs on the top, not the joint.
    Who do you call when the lawmakers ignore the law?

    Miller AC/DC Thunderbolt 225
    Miller 180 w/Autoset
    Old cutting torch on LPG

  • #2
    a little bit finicky but a pipe wrap will do the job use them every day and always get a good cut (well the mark is strait....)
    trail blazer 302
    hypertherm plasma
    millermatic 251
    high feq. arc starter
    suit case (extreme 12vs)
    o/a torches
    way to many other tools to list

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    • #3
      I found one at "the gangbox". How is it used?
      Who do you call when the lawmakers ignore the law?

      Miller AC/DC Thunderbolt 225
      Miller 180 w/Autoset
      Old cutting torch on LPG

      Comment


      • #4
        Basically wrap it around the exhaust pipe twice on itself, and let the excess hang down.

        Make sure that the wraps are even all the way around so that you know the line is straight.

        Take a Sharpie and make your mark around your esxhaust pipe.

        Remove the Wrap-a-Round and make your cut.

        Very simple to use.
        Later,
        Jason

        Professional Spark Generator by Trade.

        Comment


        • #5
          "Belted"

          Originally posted by Flyingpig View Post
          The project I have at hand isnt desperate to be a perfect cut. I just want to know when I get one that is. 6in exhaust pipe for my semi. I need to shorten the pipes. What is the best way to mark and cut when you dont have a big enough saw? I have a sawzall and a portaband, both too small to do the job without going around the pipe. Id like not to end up with an angled mark or cut. The baloney cut belongs on the top, not the joint.
          Quarter-mark the pipe and use a wide piece of leather (like a belt) and draw your line with a Sharpie or silver pencil. I keep a roll of leather strap (can be bought at places like Tandy's) in my tool box.

          Pipe wrap works great too, but if you're in a hurry, and can't wait for delivery, use your belt. (Hope you have suspenders, too)

          Dave
          "Bonne journe'e mes amis"

          Comment


          • #6
            Marking pipe.

            There was a reference to a website where you could create an angled pipe marking wrap. I thought it was here somewhere but haven't found it just yet.
            Might do a search on cutting pipe at an angle. I know that several companies have special tools that are used for this issue. Something called a pipe wizard or such.
            Mustangs Forever!

            Miller equipment.

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            • #7
              Flange wizard.

              Thats the name of it. Flange wizard. I think they make those pipe wraps as well.
              Last edited by captkipp; 11-29-2009, 01:17 PM. Reason: spelling
              Mustangs Forever!

              Miller equipment.

              Comment


              • #8
                Thanks!!!!
                Who do you call when the lawmakers ignore the law?

                Miller AC/DC Thunderbolt 225
                Miller 180 w/Autoset
                Old cutting torch on LPG

                Comment


                • #9
                  You guys aren't paying attention again...

                  He FOUND a Pipe Wrap in a gang box, and he is NOT cutting the angle cut at the Top of the Stack, he is doing the Straight cut at the BOTTOM that goes into the muffler.

                  FYI - Here is the link to Flange Wizard:

                  http://www.flangewizard.com/

                  Here is the link to the Curve-O-Mark Contour ones I use up here:

                  http://www.jacksonsafety.com/linkcheck.cfm?SubCatID=45
                  Last edited by Black Wolf; 11-29-2009, 01:49 PM.
                  Later,
                  Jason

                  Professional Spark Generator by Trade.

                  Comment


                  • #10
                    Oops.

                    Originally posted by Black Wolf View Post
                    You guys aren't paying attention again...

                    He FOUND a Pipe Wrap in a gang box, and he is NOT cutting the angle cut at the Top of the Stack, he is doing the Straight cut at the BOTTOM that goes into the muffler.

                    FYI - Here is the link to Flange Wizard:

                    http://www.flangewizard.com/

                    Here is the link to the Curve-O-Mark Contour ones I use up here:

                    http://www.jacksonsafety.com/linkcheck.cfm?SubCatID=45
                    Sorry Black Wolf. I miss read his initial statement. I thought he had to make BOTH cuts.
                    Mustangs Forever!

                    Miller equipment.

                    Comment


                    • #11
                      yup good old pipe wraps work wonders. but just like blackwolf said wrap it twice and mark with sharpie, marker, soap stone depends what material it is and you are good to go.
                      trail blazer 302
                      hypertherm plasma
                      millermatic 251
                      high feq. arc starter
                      suit case (extreme 12vs)
                      o/a torches
                      way to many other tools to list

                      Comment


                      • #12
                        "The Gang Box"

                        Originally posted by Black Wolf View Post
                        You guys aren't paying attention again...

                        He FOUND a Pipe Wrap in a gang box, and he is NOT cutting the angle cut at the Top of the Stack, he is doing the Straight cut at the BOTTOM that goes into the muffler.

                        FYI - Here is the link to Flange Wizard:

                        http://www.flangewizard.com/

                        Here is the link to the Curve-O-Mark Contour ones I use up here:

                        http://www.jacksonsafety.com/linkcheck.cfm?SubCatID=45
                        "The Gang Box" is an on line store, specializing in tools for the Construction Trades.

                        Dave
                        "Bonne journe'e mes amis"

                        Comment


                        • #13
                          If it's a one-time use, just get a newspaper page, wrap it around tight, make the edges match up, draw your line.
                          Obviously, I'm just a hack-artist, you shouldn't be listening to anything I say .....

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                          • #14
                            ever try a large hose clamp, just tighten, double check and cut

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                            • #15
                              A hose clamp wont necessarily be exactly square when you tighten it but it would work great for this job. I think I have a big one on hand too.
                              Who do you call when the lawmakers ignore the law?

                              Miller AC/DC Thunderbolt 225
                              Miller 180 w/Autoset
                              Old cutting torch on LPG

                              Comment

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