Results 1 to 12 of 12

Thread: Rookie Mistake #2 Help

  1. #1
    Join Date
    Dec 2013
    Location
    Eastaboga, Alabama
    Posts
    55

    Rookie Mistake #2 Help

    I had my jumbo jaw mounted to I did bowl bottom yesterday. When I finished this bowl I saw That I had failed to finish the inside. Rookie Mistake#2 in one day. I do not know how to remount this to finish the inside. A Glue block was my only Idea outside of spending a few hours of hand sanding. I do not have the double buttons for my jumbo jaws. Any and All help appreciated
    Tom
    Ala

    mistake 3.jpgmistake 2.jpg
    Not All Who Wander Are Lost

  2. #2
    Join Date
    Dec 2012
    Location
    Bedford, NH
    Posts
    1,286
    Turn a larger bowl so the inside matches (slightly larger) the outside of your good bowl. Then use dbl-bk tape to hold the good bowl in the larger bowl while finishing it.
    Thoughts entering one's mind need not exit one's mouth!
    As I age my memory fades .... and that's a load off my mind!

    "We Live In The Land Of The Free, Only Because Of The Brave"
    “The problems we face today are there because the people who work for a living are outnumbered by those who vote for a living."
    "
    Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery." Winston Churchill

  3. #3
    IMO, a glue block would be much simpler. I would glue on a 2.5" disk, reverse the bowl in your Cole jaws and turn a tenon on the block that will be on the same plane as the rim of the bowl to minimize wobble.

  4. #4
    Vacuum chuck it. If you don't have a vacuum chuck rig, find someone in your local woodturning club that has one and beg for some time on his lathe to finish the inside. - John

  5. #5
    Join Date
    Dec 2005
    Location
    Texas Hill Country, USA
    Posts
    1,967
    Set your jumbo jaws to match the BOTTOM of the bowl. It does not look like the buttons will hold the bowl on it's own, but they should center the bowl up nicely and keep it from flying out. Get a small piece of wood and center it on your tail stock. Using the tail stock, press the block of wood up against the inside of the bowl to keep the bowl on the jaws and the block of wood will keep the tail stock from marring the bowl. Since you are just sanding, you can go at a fairly low speed and sand away. All that should be left to hand sand will be the small area that was underneath the wood block. YMMV
    Last edited by Robert McGowen; 08-17-2014 at 2:04 PM.

  6. #6
    Quote Originally Posted by Robert McGowen View Post
    ...Since you are just sanding...
    That may be the case, but the OP doesn't say that. Not sure "finish" means the same to everyone.

  7. #7
    Join Date
    Dec 2013
    Location
    Eastaboga, Alabama
    Posts
    55
    It has some tools marks , I think I could get out easier with my scrapper or BG. Sanding is also easier on the lathe as well as finishing (using a friction polish currently)
    Not All Who Wander Are Lost

  8. #8
    Join Date
    Nov 2012
    Location
    Tropical North Queensland Australia.
    Posts
    116
    Tom, one of the ways I have found around this problem is to have a variety of extensions for the mounts on your Cole Jaws. I buy a series of longer Allenhead Cap Screws in 2 inch, 3 inch and 4 inch and then machine some machining nylon or delrin in 2 inch, 3 inch and 4 inch extension posts to support the plastic blocks, so you can grip the edge of the bowl way out. If you cant follow this let me know and I will try and upload a photo. It will take a while as I will have to get a friend to do it as I only have a Tablet.
    rgds,
    Richard.

  9. #9
    Join Date
    Jan 2008
    Location
    Bangor, PA
    Posts
    1,853
    Tom,
    We were all new turners at some time and I can pretty well guarantee you most of us made bowls we wanted to repair. In retrospect, the effort is rarely worth the results. Don't spend your time trying to fix a learners mistake when the bowl is already finished. Instead, put that bowl aside and begin a new one. That bowl has already done it's job. It taught you a lot. The next one will be better and so on. Keep referring back to the mistakes you made now and you will quickly see improvement in your work.
    faust

  10. #10
    You might consider investing in a right angle drill outfitted with a sanding mandrell. In a pinch, I sand off the lathe with one of these.

  11. #11
    Join Date
    Jan 2007
    Location
    Ottawa, ON Canada
    Posts
    1,468
    FWIW, I'm with John. I have jumbo jaws and hold the piece in them by the rim. Then, it's a simple matter to attach a glue block with double sided tape and turn a tenon onto the block. Chuck up the tenon and the interior of the bowl is open for anything you want to do with it.
    Grant
    Ottawa ON

  12. #12
    Join Date
    Oct 2012
    Location
    Temperance Mi.
    Posts
    40
    I had this problem many times. I keep a stack of my mistake bowls to remind me what II have do in the past ( wrong) and where I've come from in my skills. I also invested in a vaccum chuck. I works most of the time.
    Good looking bowl.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •