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DICKEYBIRD
02-05-2015, 09:32 PM
Iím having to drill & tap some holes in my X-3 mill to mount the new glass scales and needed a drill jig. Ever since I had to get glasses with progressive lenses a couple years ago, I canít trust my freehand drilling to be square anymore. I usually just cobble up something from scrap but the next time I need one itís either the wrong size or buried somewhere.

I looked around for something to make a more substantial one from and found this piece of an ER32 chuck left over from another project. I milled a couple flats on it to fit my homemade ER wrench, made up some bushings from O-1 rod and Iím in business! It feels good in the hand & is easy to hold flat against the work. The bushing can easily be slid out to control the depth as well. Now I just have to figure how to use a tap with it & Iíll be all set.

http://i57.photobucket.com/albums/g227/DBAviation/DrillJigER1_zps8f0f1511.jpg (http://s57.photobucket.com/user/DBAviation/media/DrillJigER1_zps8f0f1511.jpg.html)

http://i57.photobucket.com/albums/g227/DBAviation/DrillJigER3_zps084c4d51.jpg (http://s57.photobucket.com/user/DBAviation/media/DrillJigER3_zps084c4d51.jpg.html)

http://i57.photobucket.com/albums/g227/DBAviation/DrillJigER2_zps15c66fba.jpg (http://s57.photobucket.com/user/DBAviation/media/DrillJigER2_zps15c66fba.jpg.html)

J Harp
02-06-2015, 07:38 AM
Looks like a useful project. My dad would have said "Now that's using your noodle".

Doozer
02-06-2015, 10:32 AM
Well my dad would have said, "Why go around the world the long way?".
Just drill a hole is a piece of scrap steel block.
Why the complexity??

-D

peekaboobus
02-06-2015, 10:35 AM
Well my dad would have said, "Why go around the world the long way?".


For the scenery.

DICKEYBIRD
02-06-2015, 10:46 AM
Just drill a hole is a piece of scrap steel block.I hear ya'. I've done that many times but as mentioned, I lose them or reuse for something else. This one along with some drill rod blanks goes in a toolbox drawer so I'll know where it'll be next time I need it. It's also easily adjustable for depth control.

Besides, I like it...so there.:rolleyes:

Carm
02-06-2015, 11:13 AM
For the scenery.

Nutshell, that

NiftyNev
02-06-2015, 06:32 PM
Besides, I like it...so there.:rolleyes:

I do too! I'm going to make one pretty much the same as yours.

Toolguy
02-06-2015, 07:20 PM
I like it! Very inventive use for a collet chuck.

Rosco-P
02-06-2015, 07:58 PM
Well my dad would have said, "Why go around the world the long way?".
Just drill a hole is a piece of scrap steel block.
Why the complexity??

-D

Whatever floats your boat. I like the "eggcup" with the slip fit renewable drill bushings that are used on aircraft work.
http://spenro.com/portable-housings-slipfixed-drill-bushings-p-727.html
Find them on Fleabay

John Stevenson
02-06-2015, 08:34 PM
Whatever floats your boat. I like the "eggcup" with the slip fit renewable drill bushings that are used on aircraft work.
http://spenro.com/portable-housings-slipfixed-drill-bushings-p-727.html
Find them on Fleabay

They are really proud of 60812 are they not in that link ?

DICKEYBIRD
02-06-2015, 08:37 PM
I like the "eggcup" with the slip fit renewable drill bushings that are used on aircraft work.That's pretty cool right there! Learned something new; thanks!

Rosco-P
02-06-2015, 08:53 PM
That's pretty cool right there! Learned something new; thanks!

Heck no, it's just an aircraft thing. Found them while searching Fleabay for an assortment of drill bushings when making a center drilling jig for shafting.

DICKEYBIRD
02-07-2015, 08:40 AM
They are really proud of 60812 are they not in that link ?It's probably a "milspec" thing. That's the size they sell to the gummint.:rolleyes:

Paul Alciatore
02-07-2015, 05:22 PM
That is a neat use of a collet chuck.

I have a somewhat large collections of drill chucks, many of them not mounted. I often use them in much the same manner, to hold various tools for hand use.

I recently purchased a couple of 1/32" to 1/2" ones with an unusual taper so they were very inexpensive. I do not plan to mount them. But they will serve nicely for holding drills, taps, countersinks, and other small tools and their overall size provides all the manual torque I will need. With a variety of these unmounted chucks, I can have several hand mounted tools at hand at a time.

You do not need a really good drill chuck for this kind of use, if you are just using it as a handle, any run-out figure less than 1/4" is more than good enough.

DR
02-08-2015, 05:30 AM
Okay, nice holder for drill bushings. Now how do you deal with locating the holder where you want the hole to be?

Rosco-P
02-08-2015, 08:09 AM
Okay, nice holder for drill bushings. Now how do you deal with locating the holder where you want the hole to be?

If you're referring to the eggcup, probably the same way Milton located his collet drill jig, with layout work and a prick mark. Maybe even a pointed piece of drill rod slid though the bushing to pick up the mark?

How did anybody do anything before DRO(s)?

DICKEYBIRD
02-08-2015, 09:02 AM
Now how do you deal with locating the holder where you want the hole to be?I map the part using a probe in my Fanuc robot, program the hole locations then switch over to the new drill guide and drill the holes with a brand new HF drill.;)

Sorry, actually I use the same method previously used with the old scrap block jigs. I mark out & center punch the hole locations, spot-drill free hand, slide the jig all the way back on the drill, place the tip of the drill in the spot, slide the jig fully forward, align everything as best as possible and hit the trigger. Works very well so far.

One of those clear plastic thingies with a set of proper drill bushings would be the schnitz though!