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04-06-2011, 12:04 PM
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Join Date: Feb 2007
Location: Iron Mountain, MI
Posts: 61
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Wing spars
It says to prime the holes after countersinking the spar. What ideas are there out there on doing this with out making a mess.
Mike
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Mike Betti
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04-06-2011, 12:34 PM
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Join Date: Sep 2007
Location: Redwood City, CA
Posts: 80
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On pretty easy option: I put some primer in a cup, and used a q-tip to touch up each countersunk hole. No mess.
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RV7A/TU Finishing Kit
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04-06-2011, 06:40 PM
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Join Date: Feb 2007
Location: Iron Mountain, MI
Posts: 61
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Thanks, that works great.
Mike
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Mike Betti
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04-06-2011, 10:41 PM
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Join Date: Jul 2007
Location: Delaware, OH
Posts: 435
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Masking tape
Another idea is to apply a strip of that blue masking tape over the flange before countersinking. Then when you countersink through the tape, you end up with perfectly masked holes ready to be sprayed.
Don't forget to set your microstop cage a couple clicks deeper to compensate for the tape thickness.
Good luck,
__________________
Mike Cencula
RV-7A (fuselage)
www.our7a.com
Betcha my pile-o-scrap is bigger than your pile-o-scrap.
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04-08-2011, 06:32 PM
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Join Date: Nov 2005
Posts: 1,256
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We alodined ours. Just take a little acid brush and dip it in Alodine, then put a drop in the countersink. Surface tension will hold the drop there, completely filling the hole/countersink...you can do a couple dozen, let them sit for a bit, then wipe down with a wet paper towel and blow dry. Looks nice, quick and easy, and no need to mess with paint (also avoids the loss of countersink depth due to paint thickness).
Just another option...
Steve
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Steve "Flying Scotsman"
Santa Clarita, CA
PP-ASEL, ASES, Instrument Airplane
RV-7A N660WS flying!
#8,000
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04-08-2011, 07:46 PM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,687
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Alodine stick followed by Q tip with primer.
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Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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