Relatively Inexpensive Fix to the Stomper's Flexing

Discussion in 'Segment Stomper Forum' started by cnsranch, Jan 30, 2018.

  1. cnsranch

    cnsranch Jerry Prinds

    First of all, Lloyd's Stomper is great. The two problems I've had deal with the total throw (length of the Stomper allowing only around 11" of bowl height) and the flex.......it's a real problem for me especially during glue-up.

    I saw a thread where a Member is using a piston (can't remember who) and it looked promising. Looked into it and found the parts to be expensive.

    So, I got to thinking (always dangerous). I was at Harbor Freight and found the answer that works for me.

    This is a long-throw hydraulic jack, used primarily for presses. HF has a 3 ton and an 8 ton, both offered manual or air powered.

    I picked up the 3 ton manual model. With the usual 20% coupon you can typically find online I paid $37 plus tax.

    The only mods I had to make to my existing set up involved enlarging the holes to accomodate the bigger shaft diameter, and building a stand for the jack as it can't be mounted underneath the Stomper - has to sit on the floor.

    The shaft is flat on the top (don't get the one that's set up with a rounded head for a press). I was going to drill and tap the center for a bolt, but was concerned with getting it perfectly square and centered (in other words, I chickened out). Instead, I turned a piece of oak the same diameter, and added a 3/8" piece of brass to the center. Epoxied it to the top of the shaft.

    After building the stand I made certain that the shaft was perfectly perpendicular to the Stomper using shims under the stand, then added some trim around the stand to keep it where it belongs. Although I haven't had the stand shift yet during use (if it does it will screw up the angles) that can be an easy fix with a little liquid nails attaching the stand to the floor.

    There is absolutely no flex.......unless you extend it all the way....the last pump of the handle is too much - just don't go there. That, along with a 22" throw and I'm a happy guy.

    If you take into consideration what I paid for the parts to build the original Stomper jig, I only have about $23 more in this set up. A no brainer to me.
     

    Attached Files:

    Harald Nygaard likes this.
  2. cnsranch

    cnsranch Jerry Prinds

  3. mfisher

    mfisher Super Moderator Staff Member

    Great idea. Thanks for sharing.
     
  4. Bob Beaupre

    Bob Beaupre Administrator Staff Member

    Nice job, that's using the old bean
     
  5. Len Estrada

    Len Estrada New Member

    This is my first real post here. I have been a segmented turner since 2003 but it was a too short a time. I have now retired from the Volunteer Fire duties as Treasurer, survived several family and personal issues and now want to start up with a new challenge – open segmented turning. My last effort is shown in the picture of my last bowl from ’03.

    I have now survived the first four attempts, with various moments of success and now must admit that the “Stomper” has really opened a new day for me. I must also add my voice to others that have been frustrated with varying degrees of accuracy with the Stomper. It is a great tool! But!

    I am really impressed with the system Jerry Prinds “CNSANCH” has taken to solve these problems and help explore new fixes. Thanks, Jerry. I am ready to join your trail and try the hydraulic jack. Your experience with the increased rigidity and the ability to adjust the alignment is encouraging. Your summary statement of NO Flex followed by the 20 inch reach says it all.

    The only question I have is what is the diameter of the hydraulic jack shaft? Is the difference any concern in the stomper steps? In advance, Thanks. Len Estrada
    LPEstrada 2003.jpg
     
  6. cnsranch

    cnsranch Jerry Prinds

    Hi, Len........
    Yes, you're going to have to modify your Longworth Chuck. Mine is home-made. I have a Carvewright CNC wood machine so enlarging the holes was no problem.
    As you might imagine, if those holes aren't perfectly centered, the Chuck is about as useful as I am at a Math Convention .
    The diameter of the shaft is just short of 1.125" (actually 28mm).
     

    Attached Files:

  7. Len Estrada

    Len Estrada New Member

    Thank you Jerry, your pictures really help. It would also help if you have pictures of your jack with parts at at various stages of the process. Also, if you build up from the bottom disk-layer it would need the larger 1.125" hole to continue. I guess I am comparing new and old steps to assure I cover the bases. I am still very interested in finding a better way to improve the assembly of the bowl. Thanks again, Len
     
  8. cnsranch

    cnsranch Jerry Prinds

    That's a 20# lead weight I have on top of the build.
     

    Attached Files:

  9. Len Estrada

    Len Estrada New Member

    Thank you for the additional pictures! I will keep you posted on my progress. Len
     

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