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07-24-2020, 11:39 AM
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Join Date: Nov 2015
Location: Osage, IA
Posts: 141
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Basis question
Anyone have a good idea/technique for deburring the back side of a hole that is inaccessible with the standard countersink/deburring tool? Been struggling with this issue during entire build.
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RV7 QB started 1/17
Working on FWF
2020 dues sent
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07-24-2020, 11:41 AM
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Join Date: Nov 2019
Location: Boulder, CO
Posts: 134
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Would the tip of a file reach the hole? A fine file rubbed over the surface might debur.
I've also found that a good scrubbing with purple scotchbrite pads debur decently, as long as you don't mind the surface getting scratched up. If this hole is inside the plane, you probably don't mind scratches.
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RV-10 build blog -- https://eaabuilderslog.org/?blproject&proj=7ZSwfzr2g
Tail finished March 2020
Wings finished July 2020
Fuselage joined to tailcone on July 19, 2020
N1814T reserved with FAA
Donated through 12/31/2020, EAA and AOPA member
When it absolutely, positively doesn't matter when or if it ever gets there, ship with Old Dominion.
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07-24-2020, 11:50 AM
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Join Date: Jul 2017
Location: San Jose, CA
Posts: 278
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Dan V
'91 Zodiac flying since 2013
RV-14A in progress
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07-24-2020, 11:52 AM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,408
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Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010 
Phase 1 done, 2/4/2011
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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07-24-2020, 01:11 PM
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Join Date: Jul 2007
Location: Litchfield Park, AZ
Posts: 1,017
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Burraway tool
Debur 3/32, 1/8 (and some other larger sizes) front and rear side of hole in single pass. Loved this when doing the flange holes on ribs or hard to access areas.
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Carlos in Arizona
EAA Chapter 538 www.chapters.eaa.org/eaa538
Wittman Tailwind W8 N53CH (built & sold)
Pazmany PL-1 N2029 (bought & sold)
RV7 - N537TC (reserved & building)
Emp, Wings & Fuse done - working on FWF
"The air is an extremely dangerous, jealous and exacting mistress. Once under the spell most lovers are faithful to the end, which is not always old age." - Winston Churchill
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07-24-2020, 01:30 PM
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Join Date: Feb 2010
Location: Vancouver, BC, Canada
Posts: 859
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Blind Deburring Tool
I've used these with great success
https://www.noga.com/Products/rvcn/R...20countersinks
Look under "Tools"
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Terry Edwards
RV-9A (Fuselage)
2020/2021 VAF Contribution Sent
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07-24-2020, 04:22 PM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 3,931
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Right angle debur tool
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/03/2019, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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07-24-2020, 07:25 PM
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Join Date: Jul 2016
Location: Worland, Wyoming
Posts: 1,360
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I use exactly what Mike S posted. Just have go have the right attachment, you want the deep U attachment.
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Jereme Carne
PPL
RV-7A Emp. done
Wings done
Fuselage done
Finish kit almost done
Exempt but gladly paying!
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07-25-2020, 12:05 AM
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Join Date: Jul 2013
Location: US
Posts: 2,245
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Quote:
Originally Posted by pazmanyflyer
Debur 3/32, 1/8 (and some other larger sizes) front and rear side of hole in single pass. Loved this when doing the flange holes on ribs or hard to access areas.
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I picked up a set of these in a bunch of sizes off of Ebay...new ones are pricey. Replacement blades are available, as well, and not very expensive. You can set the tension on them, as well, to more or less aggressive in how much metal they remove.
A terrific tool, one I really liked and highly recommend.
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2019 Dues paid!
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07-26-2020, 03:31 AM
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Join Date: Nov 2019
Location: Southport, NC
Posts: 52
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I highly recommend getting the 3/32 and 1/8 Burraways. A little pricey, but well worth it. https://cogsdill.com/products/deburring-tools/burraway
Their website has nice videos showing how they work, how to change blades, etc. I think I picked mine up from ATS or Brown Tools.
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Marty Guinn
Based at KSUT, Southport, NC
- 1973 PA28-180 (N55087)
RV14A Build
- Started Sep19, Aft Fuse complete
- Wings and fuel tanks completed,
- IO390 ordered (Oct20 deliv)
- Hartzell 2-blade composite delivered.
- Currently working on fuselage
https://eaabuilderslog.org/?s=MartysRV14A
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