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06-20-2016, 01:17 PM
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Join Date: Sep 2006
Location: Douglas Flat, CA
Posts: 588
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I use MK319s a lot in various things. Two observations:
* The K in "MK319" is for Kountersunk. That makes them hard to grip.
* The M in "MK319" is for Monel, an alloy of copper and nickel that is harder to drill than aluminum.
My process is generally to use a pin punch to knock the stem through the center. Then I drill #34 into (but not through) the head and break it off as if removing an AN426. If it spins, I'll try holding the edge with a chisel or screwdriver while drilling.
Thanks, Bob K.
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06-20-2016, 03:00 PM
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Join Date: Dec 2009
Location: Montreal
Posts: 1,456
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Hi Bob,
Once you've popped off the head, how do you get the shank out?
__________________
Scott Black
Old school simple VFR RV 4, O-320, wood prop, MGL iEfis Lite
VAF dues 2020
Instagram @sblack2154
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06-20-2016, 03:08 PM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,120
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Quote:
Originally Posted by BillL
The drill bit wants to snag in the hole with sharp edges, so I have held the drill bit at an angle to cut the edges without applying torque to the rivet. It is rough but seems to work at times.
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This is my technique as well for spinning rivets. Not ideal, but it works.
__________________
Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now. 
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06-20-2016, 03:19 PM
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Join Date: Sep 2006
Location: Douglas Flat, CA
Posts: 588
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Quote:
Originally Posted by sblack
Hi Bob,
Once you've popped off the head, how do you get the shank out?
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I usually just push them in with the shank of a #34 drill bit. |
06-20-2016, 06:04 PM
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Join Date: Jun 2006
Location: tucson, az
Posts: 104
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Super Glue
I have had good luck with super glue. If you can get it to wick in around the rivet it will usually hold it good enough to drill out. When I drill them out, I try to use a very high speed and very little pressure.
Good luck,
__________________
Bill Finnell
RV-8 Fuselage
Tucson AZ
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06-21-2016, 04:59 AM
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Join Date: Mar 2008
Location: Walpole, NH
Posts: 57
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Tool and EAA Video
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2019 - 2020 Dues Paid
N423PH Schweizer 1-23 (Sold)
N83881 Champ 7AC
N446PH RV8 (reserved)
PA-25 Pawnee Glider Tow Pilot (volunteer)
CallAir A-9 Glider Tow Pilot (volunteer)
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