Page 2 of 2 FirstFirst 12
Results 16 to 24 of 24

Thread: Spindle adapter for threading jig

  1. #16
    Join Date
    Jan 2015
    Location
    Brentwood, TN
    Posts
    608

    Revised 3D design

    I've added the lock knob for the lateral slide, and hex bolts to be able to replace the side plates. I have about 50 5/16"-18 threaded inserts left over from a drawer handle project, so I can use them embedded in the horizontals.
    Attached Images Attached Images
    Maker of Fine Kindling, and small metal chips on the floor.
    Embellishments to the Stars - or wannabees.

  2. #17
    Join Date
    Dec 2005
    Location
    Suwanee (near Atlanta), GA
    Posts
    801
    Quote Originally Posted by Mark Greenbaum View Post
    I can purchase other 3/4" diameter thread rod configurations from McMaster Carr and get the hex nuts to fit. So it is adaptable. I'll see it I can make it work, then decide if I can afford to go further. The collet has been delayed 'til Monday.
    Mike Peace - your article and videos are really inspiring and if this works, all the better. If it doesn't, maybe post an addendum to your video and make a disclaimer?
    Thanks for your support. I don't have a video showing how to make a jig. I did post this video which one might consider a disclaimer https://www.youtube.com/watch?v=RIGS-fcl2LM
    God is great and life is good!

  3. #18
    Join Date
    Jan 2015
    Location
    Brentwood, TN
    Posts
    608
    Thanks Mike. I have been doing Honey-Do's all weekends, so progress has been slow. Almost there, though. I'll post pictures and maybe a video if I can get it to work like expected. It should do well for my amateur abilities.
    Maker of Fine Kindling, and small metal chips on the floor.
    Embellishments to the Stars - or wannabees.

  4. #19
    Join Date
    Nov 2006
    Location
    TX, NM or on the road
    Posts
    758
    A little late to the party on this one. But there is a guy on IAP that makes specialized tooling for penturners and one of the items is spindle adapters. http://www.penturners.org/forum/f349...ssories-92501/
    If he doesn't stock it, I bet he could make what you need.

  5. #20
    Join Date
    Jan 2015
    Location
    Brentwood, TN
    Posts
    608
    Quote Originally Posted by Marvin Hasenak View Post
    A little late to the party on this one. But there is a guy on IAP that makes specialized tooling for penturners and one of the items is spindle adapters. http://www.penturners.org/forum/f349...ssories-92501/
    If he doesn't stock it, I bet he could make what you need.
    Thanks, Marvin, but I had a Nova adapter for 5/8" diameter Shopsmith shaft remachined to fit inside the adapters for 1-1/4"-8 TPI at work. So I am goo now. Cut the side verticals tonight (measure twice, cut once, and still got it wrong - luckily too long). I'll drill all of the holes for spacer tubes and all thread rods tomorrow, and assemble by the weekend. Might have threads to take picture of by Sunday.
    Maker of Fine Kindling, and small metal chips on the floor.
    Embellishments to the Stars - or wannabees.

  6. #21
    Join Date
    Jan 2015
    Location
    Brentwood, TN
    Posts
    608
    Just an update - I have made steady, but slow progress. The base assembly is almost completely fabricated and fits on the lathe well. The Leadscrew riser assembly ended up too tall, and I had to slot the upper side mounting holes to lower the center of the all-thread shaft. I had a lot of 5/16-18 UNC thread inserts remaining from my pantry drawer project, so they are getting used wherever possible. So many trips back and forth to HD for the appropriate screws, but getting really close. Pictures will be coming when completed. I am really getting anxious to turn a vessel and put treads on the inner and outer joints.
    Maker of Fine Kindling, and small metal chips on the floor.
    Embellishments to the Stars - or wannabees.

  7. #22
    Join Date
    Jan 2015
    Location
    Brentwood, TN
    Posts
    608
    Well, I got the jig all finished, and FAIL. I was showing my wife my wonderful creation (which has occupied my spare time for about 4 weeks) and I placed my Japanese Maple Mallet in the Nova G3 chuck and placed it onto the leadscrew adapter. As soon as the wood started to contact the cutter the downward load moment showed me that my dovetail on the right side was nowhere near tight enough. The whole riser assembly started to get pulled downward. Of course, I shut the lathe off, and first thing this morning I woke with a new brainstorm to repair the hold down mechanism. Perhaps it will work as is for a small objects (the mallet is about 12" long with a 5" diameter striking head, probably 3 lbs, plus the chuck), But I really want to go large.
    Maker of Fine Kindling, and small metal chips on the floor.
    Embellishments to the Stars - or wannabees.

  8. #23
    Join Date
    Sep 2015
    Location
    San Diego, Ca
    Posts
    976
    I sent you a PM.

  9. #24
    Join Date
    Jan 2015
    Location
    Brentwood, TN
    Posts
    608
    Not sure if Brice got my reply, so here's a recap:

    I went to the jig this morning and changed out the cams the push the right hand dovetail guide. That actually seems to work for locking the sway out of the leadscrew base assembly. So, a bit more confident, I turned a small cylindrical jar of spalted silver maple, and cut the recess for the treads to be cut into. I re-installed the jig, and transferred to Nova G3 with the jar to it; installed the collet and cutter, and I was ready to go. Now the problem appears to be the vertical slop in the 2 x 3/4"-10 UNC nuts that are embedded into the leadscrew block. When the cutter engages a portion of perhaps out of round wood, it creates a bucking reaction within the leadscrew. I had planned to make keeper/backlash eliminator washers; so that's my next step. So, I am shooting at a moving target.

    I may have to save my spare change (yeah, where's that?) and spring for a Baxter or chefwarekits milled aluinum assembly. For the cost of a Baxter, I may try to find a used small combo mill/lathe and make my own out of aluminum and steel.
    Maker of Fine Kindling, and small metal chips on the floor.
    Embellishments to the Stars - or wannabees.

Posting Permissions

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