LumberJocks

Gauges in the Shop #1: Go - No Go gauge for Lathe Chuck

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Blog entry by Jim Jakosh posted 05-28-2019 01:05 PM 831 reads 2 times favorited 10 comments Add to Favorites Watch
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I use this gauge a lot so I thought I’d share it with fellow Lumberjocks that turn on the lathe.
I was is Quality Assurance for most of my working life and we had many of these attribute gauges in the shop to quickly tell if something is within acceptable range . They were typically hardened a ground steel gauges but this one is plastic and replaced the wood one I used for years. I have watched a lot of demonstrators putting a tenon or a mortise on a piece before loading it into a chuck and they most often pull out a caliper to check the size to make sure it will fit in the chuck. This does that in an instant and with the machine running a lot of times.

I measured the range of my chuck from smallest to largest inside and outside the jaws and cut this gauge to put over the tenon or in the mortise to make sure it will fit the chuck while I’m turning it. I even color coded this one green for GO and red for NO GO.

Cheers, Jim

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



10 comments so far

View lew's profile

lew

12860 posts in 4264 days


#1 posted 05-28-2019 01:36 PM

Thanks, Jim, Cool idea!

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View John Stegall's profile

John Stegall

528 posts in 4025 days


#2 posted 05-28-2019 01:45 PM

I worked at JSC in Houston in the tool crib. An engineer from NASA spent about an hour showing me how to check a Go-No Go gauge. In five years no one ever checked them out. The machinists used their micrometers and the QC people had their own.

-- jstegall

View doubleDD's profile

doubleDD

8653 posts in 2552 days


#3 posted 05-28-2019 02:31 PM

I find this interesting and a lot quicker too. I ran into that problem many times. Great solution. There will be one in my shop soon.

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

View mafe's profile

mafe

12110 posts in 3598 days


#4 posted 05-28-2019 02:47 PM

Thanks Jim,
Thats clever thinking and really useful.
(looks like a cuttingboard plastic).
Best thoughts my friend,
Mads

-- MAD F, the fanatical rhykenologist and vintage architect. Democraticwoodworking.

View Jerry's profile

Jerry

3257 posts in 2157 days


#5 posted 05-28-2019 05:22 PM

Great idea Jim, thanks for sharing!

-- There are good ships and there are wood ships, the ships that sail the sea, but the best ships are friendships and may they always be. http://www.geraldlhunsucker.com/

View Jacksdad's profile

Jacksdad

238 posts in 933 days


#6 posted 05-28-2019 05:41 PM

Great idea

View bushmaster's profile

bushmaster

3672 posts in 2791 days


#7 posted 05-29-2019 04:51 PM

Great idea, I have used the hit and miss procedure, would be nice to have a perfect fit every time.

-- Brian - Hazelton, British Columbia

View Jim Jakosh's profile

Jim Jakosh

23374 posts in 3614 days


#8 posted 05-29-2019 06:45 PM

Thank you all for the nice comments. I hope this will help make some turner’s life easier.

Cheers, Jim

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

View Grumpy's profile

Grumpy

25623 posts in 4360 days


#9 posted 06-02-2019 02:07 AM

Great idea with the colours as well Jim.

-- Grumpy - "Always look on the bright side of life"- Monty Python

View Jim Jakosh's profile

Jim Jakosh

23374 posts in 3614 days


#10 posted 06-02-2019 11:08 AM

Thanks, Tony!!

Cheers, Jim

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

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