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  • tube grinder

    I needed something to notch tubes that were hard to hold in a vise. The commercial tube grinders run from 3K up!!! Looked thru the scrap pile, ordered some bearings and pulleys, and slapped this together. It is a real timesaver and will get a paint job soon...








  • #2
    Tube grinder...

    Hey SNAFU,
    Hmmmm...You must be ex-military...

    Nice setup...looks like it will really hog off some material. I use those kinds of belts at work also....love those 20/30grit belts. I noticed the vertical Allen-head bolt....is that your belt tensioner? Think I'll make one for some odd jobs I do on occasion....Thanks....Denny
    * Complete welding, machine, & fab shop *
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    * Finally retired *
    ____________________________________________

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    • #3
      A local chassis shop just rounds off a grinding stone on their grinders with a dressing tool. I copied their idea and it works great.

      Tim

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      • #4
        SNAFU, one heck of a scrap pile you got there, very nice machine....did you turn the Aluminum parts, or were they just the right size bar stock???Thanks for sharing, I may have to break down and fab something like that...Paul
        More Spark Today Pleasesigpic

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        • #5
          snafu

          nice job on tube grinder. i like the way you think!!!!
          miller bobcat 250
          wc 115a
          spoolmatic 30a
          centery 250 mic
          2 lincoln 225 stick
          a 1954 hobart portable welder w/ willies jeep engine

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          • #6
            did you turn the Aluminum parts, or were they just the right size bar stock
            They were turned with a crown to the middle so the belt would track right. The middle roller is on a spring loaded arm that makes changing belts easy. I get good life out of a belt, really surprised at how well they hold up.
            Thanks for the compliments, I will post some pics after painting.

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            • #7
              Yeah, that's cool.
              AutoArc 230 (MM 210)
              3035 spoolgun
              Spectrum 625
              Dialarc HF w/Coolmate 4

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              • #8
                Nice Job.... I gets me thinking...
                http://www.jhchoppers.com

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                • #9
                  Great job, looks good.
                  Scott
                  HMW [Heavy Metal welding]

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                  • #10
                    Snafu

                    Great job, just wondering how many hours you got into the machine work involved. We use a tubing notcher on our stock car roll cages but this looks like it may speed things up a bit. Guess I gotta try to build one like it now. Dave
                    If necessity is the Mother of Invention, I must be the Father of Desperation!

                    sigpicJohn Blewett III 10-22-73 to 8-16-07
                    Another racing great gone but not to be forgotten.http://video.google.com/videoplay?do...modified&hl=en

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                    • #11
                      Between sketching up a basic plan, rounding up parts and building, probably 20 hours. I had to get a bigger, faster motor. Wound up with a 1 1/2 HP 3600 RPM. The machine is a huge timesaver for us. There are smaller versions available similar to this, but all use a 2" wide belt. This has a 4" belt. Went with a foot switch so both hands are free.

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                      • #12
                        ready to rock...

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                        • #13
                          Can you change the roller, at the end, to cut different size tubing? I saw a commercial one sorta like yours that all it did was use different rollers to match the tubing size. I like yours, you can use it as a regular belt sander too.
                          Scott
                          HMW [Heavy Metal welding]

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                          • #14
                            Nicely done! It looks like you don't have a fixture for holding the tubing, are you holding it by hand and eyeballing it? (that's what I do!)

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                            • #15
                              Can you change the roller, at the end, to cut different size tubing?
                              Yes, I haven"t made them yet, but it will be a quick change for 4 different size front rollers.

                              It looks like you don't have a fixture for holding the tubing, are you holding it by hand and eyeballing it?
                              I didn't want a rest for vise. It is much faster to freehand the contour.

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