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Home Made Tools and Jigs #1: Self Centering 1/2" Dowel Drilling Jig for the Invisio - Hinge

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Blog entry by Jerry posted 05-29-2015 08:27 PM 2526 reads 5 times favorited 31 comments Add to Favorites Watch
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Made from $12.00 worth of bronze bushings and a shaft collar. The shaft collar has a set screw that holds a 1/8” drill bit in place, so you would need to use 1/8” axles for your hinge pieces.

The largest bushing has an inside diameter of 1/2”.

The second bushing an outside diameter of 1/2” and an inside diameter of 3/8”.

The shaft collar has an outside diameter of 3/8”, takes a 1/8” drill bit, and uses an allen set screw that takes a 1/16” allen wrench.

The idea will be to epoxy the smaller bushing a set distance into the larger bushing. The drill bit itself will be inserted directly into the drill chuck and used to hold the jig in place and the shaft collar will be pushed up all the way to the chuck thereby preventing the drill bit from moving backwards away from the dowel end as it’s being drilled.

Update 09/13/2015 – This jig is now tested and works great!

-- 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://geraldlhunsucker.com/



31 comments so far

View jumbojack's profile

jumbojack

1667 posts in 2084 days


#1 posted 05-29-2015 09:21 PM

So does the small bushing turn inside the larger bushing? Heat generated?

-- Made in America, with American made tools....Shopsmith

View Jerry's profile

Jerry

1764 posts in 1108 days


#2 posted 05-29-2015 09:52 PM

The small bushing has been super glued to the larger bushing, so no, it does not turn, however now that you mention it, the shaft collar could possibly turn inside the smaller bushing if the dowel is a really tight fit, so in that event, I will simply super glue the shaft collar to the inside of the smaller bushing.

-- 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://geraldlhunsucker.com/

View JoeinGa's profile

JoeinGa

7479 posts in 1467 days


#3 posted 05-29-2015 10:24 PM

I’m SO GLAD you included pictures! From reading your description I was like “WTF?”

But your pictures make it look so easy … and USEFUL too! :-)

-- Perform A Random Act Of Kindness Today ... Pay It Forward

View poospleasures's profile

poospleasures

544 posts in 1944 days


#4 posted 05-29-2015 11:06 PM

Thanks Jerry. I have used your hinge idea on several boxes and yes sometimes the hinge pin holes are off by a tad. This jig will certainly fix that problem. Again thanks for your sharing of these wonderful ideas.

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

View gfadvm's profile

gfadvm

14940 posts in 2150 days


#5 posted 05-29-2015 11:45 PM

Jerry, That looks like it should work and be very accurate. My current jig is a chunk of 3/4” aluminum with a 1/2” hole with a 1/8” hole inside the 1/2” hole.

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

View Mean_Dean's profile

Mean_Dean

5042 posts in 2608 days


#6 posted 05-30-2015 12:29 AM

Asked and answered—thank you!

-- Dean

View Luddite's profile

Luddite

171 posts in 699 days


#7 posted 05-30-2015 12:49 AM

Very cool idea Jerry. Kinda like Bond’s toolmaker “Q”.

Live and let drill.

-- T Loftus -- Just on the edge of common sense

View Robsshop's profile

Robsshop

899 posts in 2435 days


#8 posted 05-30-2015 02:53 AM

From all appearances and description, it looks like it will work as intended! Perhaps a video of it in action when you make the first test run.

-- Rob,Gaithersburg,MD,One mans trash is another mans wood shop treasure ! ;-)

View Roger's profile

Roger

19865 posts in 2264 days


#9 posted 05-30-2015 12:11 PM

Very nifty Jerry

-- Roger from KY. Work/Play/Travel Safe. Keep your dust collector fed. Kentuk55@yahoo.com

View Jerry's profile

Jerry

1764 posts in 1108 days


#10 posted 05-30-2015 08:58 PM



I m SO GLAD you included pictures! From reading your description I was like “WTF?”

But your pictures make it look so easy … and USEFUL too! :-)

- JoeinGa

I know, I know, I can be pretty obtuse verbally. Sorry about that!

-- 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://geraldlhunsucker.com/

View Jerry's profile

Jerry

1764 posts in 1108 days


#11 posted 05-30-2015 09:00 PM



Thanks Jerry. I have used your hinge idea on several boxes and yes sometimes the hinge pin holes are off by a tad. This jig will certainly fix that problem. Again thanks for your sharing of these wonderful ideas.

- poospleasures

Well how come you haven’t posted any of those boxes on your project page? I sure like to see them! No problem on the share, plenty of people here have helped to make me what I am today, WoodWookie, Destroyer of Trees…

-- 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://geraldlhunsucker.com/

View Jerry's profile

Jerry

1764 posts in 1108 days


#12 posted 05-30-2015 09:01 PM



Jerry, That looks like it should work and be very accurate. My current jig is a chunk of 3/4” aluminum with a 1/2” hole with a 1/8” hole inside the 1/2” hole.

- gfadvm

Details please Andy?! I’d love to see that jig. Always looking for new ideas.

-- 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://geraldlhunsucker.com/

View Jerry's profile

Jerry

1764 posts in 1108 days


#13 posted 05-30-2015 09:02 PM



Very cool idea Jerry. Kinda like Bond s toolmaker “Q”.

Live and let drill.

- Luddite

Thanks Luddite.

-- 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://geraldlhunsucker.com/

View Jerry's profile

Jerry

1764 posts in 1108 days


#14 posted 05-30-2015 09:02 PM



From all appearances and description, it looks like it will work as intended! Perhaps a video of it in action when you make the first test run.

- Robsshop

Definitely. The jury is still out on this until I provide some proof of concept.

-- 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://geraldlhunsucker.com/

View Jerry's profile

Jerry

1764 posts in 1108 days


#15 posted 05-30-2015 09:03 PM



Very nifty Jerry

- Roger

Thanks for checking in Roger. Always good to hear from 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. http://geraldlhunsucker.com/

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