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Project Information

This little project was more about experimenting with a Greenlee combination drill tap than edge marking stock. Add, too much nice walnut scrap and the need to fritter.

The Greenlee drill tap bit is convenient. It drills and threads in one combined operation. The leading segment of the bit drills a slightly less that 1/4" hole. The second segment follows and threads the hole to 1/4" and 20 threads per inch. This accommodates 1/4" rod which can be all over the shop for jigs. To avoid stripping the threads, a cordless drill in a portable drill stand was used to slowly cut threads.

Experimentation yielded an excellent way to turn custom knobs with a threaded rod insert. I threaded a piece of scrap. Cut it to an 1 1/2" cube. Screwed in the threaded rod with a touch of Gorilla glue. The rod, cube attached, was then inserted in a Barracuda key chuck on the lathe.

Dimensions: Body, 1 1/2" square x 4 1/2". Three eights (3/8") dowels on a 1 3/4' center.

Gallery

Comments

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5,865 Posts
Cool tool application .
I will look for one and give it try it would make a lot of things easier .
But as far as centre line markers go I prefer my design .

Klaus
 

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679 Posts
I bow to Keifer! I was able to find his Centre Line Marking Tool. With a Top Daily and over 5000 views, the parallelogram design is preferable. It solves a shortcoming - running the center line to the very end of the board.

And, it would be a great application for the Greenlee Drill Tap.
 

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3,385 Posts
I like the idea and wonder just how well the marker works…does it stay in a straight line when used? But I really like the post regarding the drill bit. I have never seen one before…where did you purchase it? Do you know if they come in different sizes? Thanks for sharing
 

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679 Posts
Larry, Electrical Supply Houses sell Greenlee or they are available on the Net. Amazon has individual bits and sets ranging in size. Click here!
 

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21,115 Posts
Awesome De. Thnx a bunch. I like that center line marker.
 

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7,855 Posts
Very nice indeed!
Much better than mine out of plastic.
 

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679 Posts
Thank you, Pete. That's a fascinating link. I saved it.
 
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