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I was given this right angle drill attachment,
with bits and a depth-adjustable
countersinking attachment a few years ago.
I just dug it out after reading another post where guys mentioned aircraft drills and some sort of adjustable stop.
Does anyone know if this tool is aircraft
related?
What was it meant to be powered by?
Air drill?
Any other useful or interesting info?
-Thanks
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Miller a/c-d/c Thunderbolt XL
Millermatic 180
Purox O/A
Smith Littletorch O/A
Hobart Champion Elite
Sent from my iPhone using Tapatalk
Miller a/c-d/c Thunderbolt XL
Millermatic 180
Purox O/A
Smith Littletorch O/A
Hobart Champion Elite
It is a aircraft right angle rivet drill attachment. They are light duty for like 3/16" max in aluminum. You drive it with and drill that will chuck on it. Electric, cordless or air.
https://www.aircraftspruce.com/catal...All%20Products
Last edited by danielplace; 10-22-2018 at 08:21 PM.
the other bit is a microstop countersink setup
Micrometer adjustable drill stop. AKA Micro Stop. The knurled nut adjusts the depth of cut. 1/4”x28 threads on the cutters and drills.
Drill bits are number sizes 10, 20, 30, 40 commonly available in a variety of lengths.
The counter sinks are normally 100 degree for riveting, but other angles are available.
If my feeble old eyes don’t deceive me II think there is a “bonding brush” in the upper right corner compartment. A piloted brush used to clean the area around a drilled hole for electrically bonding ground wires and static dissipating wicks.
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Dial Arc 250HF
Thunderbolt 225 AC/DC
Assorted A/O torches
es it is an aircraft drill or a really brutal dentist drill
Thanks guys for responses.
I don’t think brush has pilot.
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Miller a/c-d/c Thunderbolt XL
Millermatic 180
Purox O/A
Smith Littletorch O/A
Hobart Champion Elite
That is what is known as a “Terry” drill attachment. Used for drilling holes in aircraft structures in tight places. Look for 1/4-28 threaded shank drills and reamers. The other attachment is a microstop countersink unit, which also would use the small threaded tube looking guys in the large tray. They are actually bushings that go into an attachment for the microstop.
The knurled nut is a lock ring/nut, loosen it and pull the outer portion of the barrel toward the nut. That frees the upper portion to be turned to adjust the depth of the cutter being used. The stroke of the tool is kinda short, about 1/2” or so.
A decent mechanic can hold depth of a countersink to +/-.001 over 1,000’s of holes.
The 'small threaded tube looking guys' have nothing to do with the MicroStop. They are drill guides for drilling out existing rivets. They slip over the head of a round rivet to keep the drill centered.
The tapered reamer things are used in the MicroStop to countersink rivets. Different sized for different rivet shank diameters.
I've got an angle drill like that but it has a flexible extension that's about 18" long.
Did you get any Clecos?
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An absolute indispensable tool if you do anything with rivets.
https://en.wikipedia.org/wiki/Cleco_(fastener)
http://clecofasteners.info/cat-k-pli...fasteners.html
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Dot Matrix used them extensively in her car builds. Miss her and her work, she was an artist. Sadly her stuff was deleted when she left which was a real pity, she had a lot to teach us.
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