Simple Jigs and Techniques #12: Locating Critical Insert Nuts

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Blog entry by shipwright posted 09-08-2015 01:08 AM 2223 reads 2 times favorited 17 comments Add to Favorites Watch
« Part 11: Modular Veneer Press Build Part 12 of Simple Jigs and Techniques series Part 13: Making Fine Dust for Marquetry Mastic »

This is pretty simple but I hadn’t thought of it before. Maybe someone else can use this little tip. When I was making the adjustable jaws for my school chevys, I needed to locate some insert nuts really accurately so the jaws wouldn’t bind. The slot in the jaw is 1/4” but the hole for the insert nut needs to be 3/8”.

I’m sure there are lots of good ways to do this but here’s what I did. It was really easy and absolutely accurate.

First I marked with a brad point 1/4” bit.

Then I drilled the hole with a 3/8” Forstner bit. The brad hole was a perfect locator.

The fit is perfect and everything slides smoothly.

This is so simple that I almost didn’t post it but then the series is called ”Simple Jigs and Techniques” and besides I had not thought of it before. ......... maybe you didn’t either… :-)

Thanks for looking in.


-- Paul M ..............the early bird may get the worm but it’s the second mouse that gets the cheese!

17 comments so far

View SPalm's profile


5334 posts in 4484 days

#1 posted 09-08-2015 01:14 AM

Nice one.
The center point in the forstner bit here is the key. And that that bit will not ‘walk’ around. Neat.


-- -- I'm no rocket surgeon

View Handtooler's profile


1628 posts in 2734 days

#2 posted 09-08-2015 01:19 AM

Maybe easy, but so very useful! Thanks for rethinking and posting this’en. I’ll find use for it very soon/

-- Russell Pitner Hixson, TN 37343 [email protected]

View Jim Jakosh's profile

Jim Jakosh

23740 posts in 3707 days

#3 posted 09-08-2015 01:39 AM

Neat idea Paul. That puts the center spot on where you need it.

When I want to transfer a hole exactly to right location ( in metal or wood) like for a pattern of flat head screws. I drill through both pieces with the tap drill first, then I open up the top holes with a clearance drill and do the countersinking. Makes for a perfect location of the pattern. It takes a little longer but I have leaned through time that is pretty foolproof where spotting with a punch center can wander a bit in the grain of wood when you go to drill it.

Cheers, Jim

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

View Joe Lyddon's profile

Joe Lyddon

10859 posts in 4654 days

#4 posted 09-08-2015 02:11 AM

COOL tip…

Thank you!

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: ... My Small Gallery:

View Woodbridge's profile


3710 posts in 3020 days

#5 posted 09-08-2015 02:13 AM

great idea Paul. A set of transfer punches also comes in handy for this type of task.

-- Peter, Woodbridge, Ontario

View DocSavage45's profile


8881 posts in 3444 days

#6 posted 09-08-2015 03:02 AM


Hope you got spme water time!

-- Cau Haus Designs, Thomas J. Tieffenbacher

View Sodabowski's profile


2388 posts in 3435 days

#7 posted 09-08-2015 07:30 AM

Bullseye, buddy.

-- Thomas - there are no problems, there are only solutions.

View Mark Wilson's profile

Mark Wilson

2696 posts in 1665 days

#8 posted 09-08-2015 07:56 AM

Center finders for hinges come in lots of sizes. But, for something as big as 1/4”, I think you’re cooking with gas. That means I concur that it’s a swell idea.

-- Mark

View Roger's profile


21030 posts in 3406 days

#9 posted 09-08-2015 11:37 AM

This is a gr8 tip Paul.

-- Roger from KY. Work/Play/Travel Safe. Keep your dust collector fed. [email protected]

View stefang's profile


17034 posts in 3936 days

#10 posted 09-08-2015 05:52 PM

Always good to have a useful tip like this one floating around in the grey matter. Thanks Paul.

-- Mike, an American living in Norway.

View kiefer's profile


5713 posts in 3269 days

#11 posted 09-08-2015 08:53 PM

Good way to get precise lineup but why not use a 1/4” forstner bit for marking then the tip would be almost identical .


-- Kiefer

View shipwright's profile


8452 posts in 3400 days

#12 posted 09-09-2015 05:16 AM

Good point, because I had picked up the brad point first I guess. :-)

-- Paul M ..............the early bird may get the worm but it’s the second mouse that gets the cheese!

View BritBoxmaker's profile


4611 posts in 3638 days

#13 posted 09-13-2015 04:44 PM

Thanks for posting this, Paul.

I’ve had trouble locating my nuts in the past but it shouldn’t be a problem anymore.

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging.

View Jerry's profile


3309 posts in 2250 days

#14 posted 09-13-2015 05:50 PM

Thanks for posting this, Paul.

I ve had trouble locating my nuts in the past but it shouldn t be a problem anymore.

- BritBoxmaker


Seriously Paul, if you can keep getting comments like this with your posts, I will read all of them ten times. Really great info, thank you!

-- 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.

View madts's profile


1921 posts in 2941 days

#15 posted 09-13-2015 05:57 PM

I think British humour at its best.


-- Thor and Odin are still the greatest of Gods.

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