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tenon guage tool

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tenon guage tool

#1

Keith Tompkins

tenon guage tool

Keith Tompkins

>Due to my schedule, I haven't been posting much....I feel like a lurker!

I came up with a simple way to size a tenon while it is between centers, to ready the piece for chucking. I made a plywood template that looks like a giant open-end wrench, that has an opening that corresponds to the largest size my chuck will open.

To use, I form a tenon. If my tool won't slip over the tenon, it is still too large for the chuck. Once it slips over, thread on the chuck, and tighten it up. the thickness of the plywood used will guage the depth of the tenon, so both diameter and depth can be measured at once.

A great aid for a demo...avoids taking the piece on and off the lathe because the tenon was a bit too big. works like a charm.

Re: tenon guage tool

#2

Re: tenon guage tool

John Trant (Baltimore/WashDC)

>I have used a similar device for years except that I have 3 gauges cut out on each jig and I have a different jig for each set of jaws. One of the gauges on a jig is very slightly smaller than the largest tennon a jaw can accept, one is very slightly larger than the smallest tennon, and the third is for the optimum tennon size. I made them out of 1/2 inch plywood (which of course is undersized) so that I can make sure I don't make the tennon too long. This is perfect for my Oneway jaws on my SuperNova chucks.

John

Re: tenon guage tool

#3

Re: tenon guage tool

Gary Bills in NC

>I made this one. It don't have a depth gauge though. It has a minimun and maximum width. I hange it from the headstock and use it a lot.


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Re: tenon guage tool

#4

Re: tenon guage tool

Mike Rubes, Apex, NC

>Hi Keith,

That's a great idea! I am going to have to cut me one of those this afternoon. I love the simplicity of the idea.

Thanks,

Mike

Belt replaced and spinning again in Apex, NC!!

Re: tenon guage tool

#5

Re: tenon guage tool

Mike Schwing from Maryland

>I had a bunch of extra compass' tools, so I sized them to just under half of the diameter of my chuck jaws max opening and then glued them shut in that position. When I want to scribe a line for the proper sized tenon, I just hold one end of the compass at the centermark and press the point of the other to the work. It scribes a perfect circle and then I form the tenon from there. Works every time.

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