LumberJocks

Jig for turning the base of round objects

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Project by BobWemm posted 07-27-2015 11:47 AM 2456 views 5 times favorited 19 comments Add to Favorites Watch

The two Segmented pieces I just posted required some method of holding to enable the finishing off the bases.
The first try allowed the “Spiral” one to go flying and I had to do repairs, so obviously something a little more substantial was required.
I have seen similar clamps as this on this site but decided that it was the best way to go. It is constructed to be Multi-fit and that is why there are threads and nuts sticking out where I would rather them not being. A Bit DANGEROUS. The other alternative is to cut the rod to fit each mounting.
The middle main piece is Pine and the inner and outer rings, plus the internal ring are MDF. There is an extra groove to allow for a much smaller internal ring to be used if necessary.
C & C welcome.
Thanks for looking.

Bob

-- Bob, Western Australia, The Sun came up this morning, what a great start to the day. Now it's up to me to make it even better. I've cut this piece of wood 4 times and it's still too damn short.





19 comments so far

View Bob Collins's profile

Bob Collins

2317 posts in 3145 days


#1 posted 07-27-2015 12:00 PM

Nice work on the jig Bob, always been going to make one something like that. Nice feature ring your working on.

-- Bob C, Australia. I love sharing as long as it is not my tools

View helluvawreck's profile

helluvawreck

23142 posts in 2328 days


#2 posted 07-27-2015 12:16 PM

That certainly does look like it will get the job done. However, in order to make it a little safer you could furnish your self with some extra sets of threaded rods of various lengths so that the rods wouldn’t stick out as far. Nice work.

helluvawreck aka Charles
http://woodworkingexpo.wordpress.com

-- If a man does not keep pace with his companions, perhaps it is because he hears a different drummer. Let him step to the music which he hears, however measured or far away. Henry David Thoreau

View  woodshaver (Tony)  's profile

woodshaver (Tony)

4004 posts in 2814 days


#3 posted 07-27-2015 12:40 PM

Bob, as you know I’m no wood turner but I love seeing the work that you and other do. I can see that plenty of thinking goes into the making of a segmented turning. How many hours went into this beautiful piece?

-- Tony C UAW, St Augustine FL, My high school shop teacher said "You can do it"... Now I can't stop!

View doubleDD's profile

doubleDD

5221 posts in 1505 days


#4 posted 07-27-2015 01:08 PM

I say if it works for you then use it. It will only be improved on as you see how it works.

-- Dave, Downers Grove, Il. -------- When you run out of ideas, start building your dreams.

View TheDane's profile

TheDane

4997 posts in 3124 days


#5 posted 07-27-2015 01:25 PM

I have been meaning to make one of these … thanks for posting!

This is called a ’Donut Chuck’, and is probably the most secure method for holding work while finishing the bottom. Woodturner Gord Rock did a video last year that detailed construction: https://youtu.be/t-10dXclT_4

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

View majuvla's profile

majuvla

9120 posts in 2329 days


#6 posted 07-27-2015 01:32 PM

Big jig for big maschine.

-- Ivan, Croatia, Wooddicted

View Jim Jakosh's profile

Jim Jakosh

17143 posts in 2567 days


#7 posted 07-27-2015 01:46 PM

Bob, you are very creative. That is a great holding jig for the work you were doing. It seems like the job dictates the path we take to finish it properly. Nice going, my friend!!..................Cheers, Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View tyvekboy's profile

tyvekboy

1335 posts in 2475 days


#8 posted 07-27-2015 03:31 PM

Great Idea.

-- Tyvekboy -- Marietta, GA ………….. one can never be too organized

View Todd Barrone's profile

Todd Barrone

799 posts in 1734 days


#9 posted 07-27-2015 05:03 PM

Very interesting and informative.

-- "The Cedar King" https://www.facebook.com/BarroneFarm

View Rockbuster's profile

Rockbuster

499 posts in 2070 days


#10 posted 07-27-2015 05:47 PM

Nice jig Bob, that all thread sticking out looks scary, but I’ll bet you only come in contact with it once while turning.

-- Rockbuster,Ft. Wayne,In It is far better to remain silent, and appear the fool, than it is to open ones mouth, and remove all doubt.

View Mark Wilson's profile

Mark Wilson

1751 posts in 525 days


#11 posted 07-27-2015 08:35 PM

Cool jig, Bob, and innovative. But very bulky. Do you not have a Cobb or Longworth chuck? I have a Longworth that I got from Ron Brown. It’s not foolproof – I’ve had things come out of it, but, I blames meownbadself for that.

-- Mark

View peteg's profile

peteg

3855 posts in 2284 days


#12 posted 07-27-2015 09:08 PM

Always great to figure out the final touches to a piece Bob, simple answer her well done mate.
Make sure we see the finished job :)
cheers
pete

-- Pete G: If you always do what you always did you'll always get what you always got

View toyguy's profile

toyguy

1552 posts in 3299 days


#13 posted 07-27-2015 11:54 PM

Nice donut chuck.

-- Brian, Ontario Canada,

View poospleasures's profile

poospleasures

544 posts in 1945 days


#14 posted 07-28-2015 12:13 AM

Good donut holding piece. I have not turned pieces shaped like those two. I can certainly see your chuck working very well for them. One day when I become a better turner I will try one and make myself a donut. Thanks for showing.

-- I,ve had amnesia for as long as I can remember. Vernon

View BobWemm's profile

BobWemm

1806 posts in 1388 days


#15 posted 07-28-2015 02:08 AM



That certainly does look like it will get the job done. However, in order to make it a little safer you could furnish your self with some extra sets of threaded rods of various lengths so that the rods wouldn t stick out as far. Nice work.

helluvawreck aka Charles
http://woodworkingexpo.wordpress.com

Yeah, those bolts and nuts scare the hell out of me. I have decided to buy a few more rods so I can have just the nut protruding.
Like Rockbuster said, I would only get caught once, and that would be once too many.
I like having flesh and skin on my hands.

Bob.

- helluvawreck


-- Bob, Western Australia, The Sun came up this morning, what a great start to the day. Now it's up to me to make it even better. I've cut this piece of wood 4 times and it's still too damn short.

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