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Thread: My Home Made Hollow Rig

  1. #1
    Join Date
    Jul 2007
    Des Moines, IA

    My Home Made Hollow Rig

    This is my homemade hollowing rig. The shaft is 1/2" square steel, the outrigger is 1/2" steel also. The tip is a 3/16 tool steel cutter and the scraper is a section of grade 8 bolt. The high strength bolts make pretty good cutters. The handle is oak, 24” long, drilled in from the back end approximately 6” and filled with lead shot.
    The laser mount needs to be out of heavier stock as the vibration from cutting makes it jiggle a little.
    The rig works pretty well as long as I don’t get too far over the rest as the vibrations get your attention.
    I think that I will probably re-build with a 5/8” or 3/4" round stock for the shaft. That should help reduce the vibration when reaching farther over the shaft. I may eventually make a capture rig for the back end.
    I have posted some of the hollow forms that I have done with this rig in a post on lathe projects.
    Anyway, comments are welcome.
    Attached Thumbnails Attached Thumbnails Hollowing Rig 1 post.jpg   Hollowing Rig laser action post.jpg   Hollowing Rig and handle post.jpg   Hollowing rig and laser post.jpg  

  2. #2
    Join Date
    Jul 2007
    DSM, IA
    Looking good! I like the pics of it in action.
    A man is rich in proportion to the number of things he can afford to let alone. -Henry David Thoreau
    My Website

  3. #3
    Join Date
    Oct 2006
    Tokyo Japan
    Wayne, great job!

    BTW, I think it was Vaughn who suggested this, when I made my hollowing rig, but you need a counter weight to really reduce the laser from bobbing around too much...........

    Click image for larger version. 

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    .. if that makes sense.
    The two dimensions, "A" and "B" should be the same length, and the counter weight (yellow block on the right) should be the same weight as the block with the laser.

    The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails.
    William Arthur Ward

  4. #4
    Join Date
    Sep 2007
    Wayne, looks very good. And I know from my own experience how nice it is to work with a hollowing rig.
    Great job.

  5. #5
    Join Date
    Oct 2006
    ABQ NM
    That looks great, Wayne. I really like the articulating cutter assembly.

    To expand a bit on what Stu mentioned, the rig I use has the battery pack separate from the laser emitter, and it's at the back end of the bar that holds the laser. It ends up being a counterbalance, although on mine it's usually not possible to hang the back part off the supporting bar as far as Stu's drawing. For yours, you could use just about anything for a counterbalance (in place of the batteries) as long as you have some bar length to attach it to.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

  6. #6
    Join Date
    Jul 2007
    Des Moines, IA
    Stu, Vaughn, I will look into the counter weight for the laser. Sounds like it should work.

  7. #7
    Join Date
    Dec 2006
    Goodland, Kansas
    Wayne that is a good looking tool. Well done.
    Bernie W.

    Retirement: That’s when you return from work one day
    and say, “Hi, Honey, I’m home – forever.”

    To succeed in life, you need three things: a wishbone, a backbone and a funnybone.

  8. #8
    Join Date
    Feb 2007
    Mooreland, Indiana

    A counter balance will help you greatly. You might want to cut down on the weight out on the end of the laser. The least amount of weight you have out there, the less the vibration. Plus you must keep the laser perpendicular to the lathe ways; this will allow for the correct reading of your laser. I like you out rigger. Looks good.

    Maker of Fine Lathe Tools & Accessories.

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