Wood thread cutting, the Chinnomotto way

[Chinnomotto]

OK Folks, I am going to show you my way of doing thread cutting.  Simple,not perfect but it works

The blueprints is of my Woo Tuck Shuet puzzle, you balance it, then you can open it to see the mechanism

However any 2 matching halves can also do. The principles are the same

Tools: Dremel rotary tool, 4 jaw self centre chuck, 1 home made V cutter, from a 1/8 mini router cutter,grind it till its 60 degrees, 1 thick and 1 thin pointed  wheel diamond  ( for touch ups), Talc powder, and lots of muscles

For the 1 foot long metal pipe , thread is  3/4 x 16tpi with a holding attachment to it. and the end matches your 4 jaw chuck insert.
A reverse thread one is handy for puzzle making too. For a 65 mm diameter box, you will get 4 threads

Thread section prep.: Cut a 10 mm slot for your 2 halves, 6 mm deep, part 1  end of the slot with a 4 mm parting tool
As per the pic, use your flat chisel and eye align the edge of your lathe bed. If they are parallel, the edge is at correct right angles.

Squaring up the thread edge is essential, other wise gaps  will appear when you fully thighten the halves

[Chinnomotto]

Sorry folks, JD will post the diagram,

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[Canuck]

Very cool Chinny, here's the 'blueprint' you asked me to post

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[LEAP]

Thanks for sharing this, pretty ingenious.

[Chinnomotto]

THANKS JD, I AM GOING BONKERS POSTING PICS, PLEASE ERASE ANY REPEATS,,,THEN ME

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[Chinnomotto]

MAKING THE STAND WITH THE CAPTURED RING

MAKING THE NECK CAPTURED RING

AH!, PENCILIS MULTICHROMA

DELUXE FLASHING EYES AND MUSIC WOO, WHEN BALANCED

THE END!

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[Arc Light]

Sweet! that's too cool.  Had to read it a few times to understand exactly how the thread was made!  You are a genius my friend! Can't wait to play with the Woo's

[Canuck]

Okay, now for the questions/comments!!!

Did you make over a hundred for the IPP exchange at Prague???  

Now, your 'Pencilmulticoloredlaminationthingamajigs', are simply amazing!!!

I tried to make a pen blank from a hexagonal pencils...what a total failure...back to square one!  Still trying to figure out how to make a lamination 'a la Chinny' for a pen blank but, not quite sure how to pull it off

[Chinnomotto]

Argh! I am so bad at this, but a promise is a promise

Cutting Threads:
 With my left hand I hand turn and feed the half, chuck held wood into the rotating Dremel which I hold and control with my left hand. With my other hand I scratch my nose. You can vary the pressure on the Dremel bit to cut deeper or less, depending
Practice , practice, practise, if it starts looking like a thread, its a thread

Grain matching the 2 halves
With 6 mm (external) and 8 mm ( internal) areas of threads cutting, you get 3 to 4 threads
If the wood grain does not match when tightened, grind the internal half,very little at a time, can be up to 2 mm if you are unlucky
Threads going with the grain will hold well, against the grain it chips, a few bald areas
The incredible thing with threads is, even 1 lousy thread will tighten well, and only a fusspot will closely examine their threads and find what a shocker / horror they look. Experiment with different woods, I forgot which ones,I gave all 110 WTS away

After 150 boxes, they all work, Some days ,its a breeze, some days I wish I wasn't born,

Anyway have fun. Grasshopper 007, I want to see a Round Triacontahedron box with threaded halves soon.(its impossible)

And Mr Paparattsi, trust you to notice the shape on the diagram, with your eagle eye,,,,Yes , it does, doesn't it?

  Enjoy WOO TUCK SHUEt!, THE VESSEL OF HAPPINESS,,,,,,What are you Thinking!!  

[Chinnomotto]

JD, Yeah I made 110 for the IPP exchange, Darn well nearly killed me, so boring, but I tried out plenty of exotic woods, the last batch was so cool.

I remade another 6 more doing the pics this time, 3 turned out good, Camphor and Rosewood, the othet 3, don't want to talk about it

Colour pencils, if you turn against the grain, it falls apart. There is a way, Glue 7 pencils together, then angle them 45 degrees, glue another stack next to it, filling in the voids, and another. When you clean up and the stack looks cylinderical, the pencils are all aligned 45 degrees , as you look at them. When you turn them, you are still turning with the grain, You Follow?

It will be a thick 4o mm diameter pencils bunched, but it will look very colourful,,,,Big pencil, the idea is good

[Canuck]

JD, Yeah I made 110 for the IPP exchange, Darn well nearly killed me

  Ah Yeah!!!!!!!!  What are you thinkin' makin' those for an exchange???  Seriously we have to talk, you need to make much simpler exchange puzzles, dang!!!!!!!  Sorry if this annoys any IPP exchangers but most of it does NOT compare to your work, heck I doubt any exchange puzzle ever has!!
If you had a made those to sell, it would have paid for the next 5 IPP trips   Think about it, PLEASE!!!!!!

[rolly_wood]

Chinny, the balancing puzzle is a genial idea! you are a polyhedric and, at the same time, unpolyhedric (continuos surfaces) puzzlemaker.

I do not understand almost anything about lathe and other turning devices, but it seems to me a very ingenous method. After hundred pieces we can say that results are ... fully reproducible  

[Canuck]

Colour pencils, if you turn against the grain, it falls apart. There is a way, Glue 7 pencils together, then angle them 45 degrees, glue another stack next to it, filling in the voids, and another. When you clean up and the stack looks cylinderical, the pencils are all aligned 45 degrees , as you look at them. When you turn them, you are still turning with the grain, You Follow?

It will be a thick 4o mm diameter pencils bunched, but it will look very colourful,,,,Big pencil, the idea is good

Okay, got it...why didn't I think of that  Need to hit the 'dollar store'

[Arc Light]

After a 100 of these, I think someone would have to lock me in a psych ward!

[Skiprat]

Very very neat Chinny!!! I suppose if you wanted different pitch thread all you would need to do is find a sample nut and bolt and you are half way there.
many thanks for sharing