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03-10-2014, 12:27 PM
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VAF Moderator / Line Boy
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Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,256
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45 or 90 - Which Do You Prefer?
This is probably a question for repeat offenders who have gone beyond the basics and bought a good angle drill.
Every year when I fill out my Christmas list, I know I'd like a good angle drill, but I get stopped when I try and decide between a 90 degree angle and a 45 degree angle - they are expensive enough that I can probably only justify one. I've used 90 degree attachment adapters, and they can be awkward enough at times that maybe the 45 would be better and fit most places.
So for those who have used both extensively in airplane construction - which do you prefer?
__________________
Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)
http://Ironflight.com
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03-10-2014, 12:29 PM
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Join Date: Jul 2009
Location: Mojave
Posts: 4,652
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I have both in my box and the 90 gets used probably 10-1 more than the 45.
I feel the 45 is a "nice to have" while the 90 is a hard requirement.
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WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.
Michael Robinson
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Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
Last edited by Toobuilder : 03-10-2014 at 01:09 PM.
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03-10-2014, 12:31 PM
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Super Moderator
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Join Date: May 2005
Location: Locust Grove, GA
Posts: 2,626
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90
Yep. I've worn out 2 of the 90 degree drills as i use them quite extensively.
VIc
__________________
 Vic Syracuse
Built RV-4, RV-6, 2-RV-10's, RV-7A, RV-8, Prescott Pusher, Kitfox Model II, Kitfox Speedster, Kitfox 7 Super Sport, Just Superstol, DAR, A&P/IA, EAA Tech Counselor/Flight Advisor, CFII-ASMEL/ASES
Kitplanes "Unairworthy" monthly feature
EAA Sport Aviation "Checkpoints" column
EAA Homebuilt Council Chair/member EAA BOD
Author "Pre-Buy Guide for Amateur-Built Aircraft"
www.Baselegaviation.com
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03-10-2014, 12:32 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,420
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90 is my choice.
I used to have a 45 degree Makita drill, found it hard to keep the bit aligned as I was drilling.
__________________
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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03-10-2014, 12:38 PM
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Join Date: Apr 2006
Location: Lantz,Nova Scotia ,Canada
Posts: 556
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I have both, but probably use the 90 more. Unless it's a 45 kinda day. 
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Paul Tuttle
RV 8
C-FPVT
Flying.
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03-10-2014, 01:06 PM
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Join Date: Jan 2005
Location: Auburn, WA
Posts: 668
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I used the 90 deg adapter for the first airplane. On the second I got the Pan American 90 deg drill and love it! I have not yet run into a situation where I felt I needed a 45.

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Andy Karmy
Covington WA
RV-8 - Flying!
RV-9A - sold
Dec 2019 Paid
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03-10-2014, 03:14 PM
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Join Date: Aug 2009
Location: Lemoore, CA
Posts: 286
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45 or 90
Paul -
I have both and find that I trend toward the 45* whenever I can. Having said that, it's pretty hard not to find those "spots" which require the 90* unit once in a while.
Both of mine are Dotco's - a very high quality drill that has been around for a million years. Got them both off Ebay, gently used, for about thirty cents on the dollar - so I got both of them for about 2/3 the cost of a single new unit. For as little as we use them in relation to the big boys - even a used unit still has a lot of life left.
What I find almost as significant is the length of the stub bits that will be used. I have them all the way from short short (3/8") to longish (3"), and bit length in conjunction with head angle will make most locations accessable. There are lots of sellers on Ebay for new/resharpened bits that can be purchased for very reasonable prices - especially the QC bits and chucks we have discussed in the past.
Hope to see you on Saturday - good luck with the ribs.
David
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03-10-2014, 03:24 PM
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Join Date: Dec 2005
Location: Mahomet, Illinois
Posts: 2,195
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Yep ...
... the 90 degree version wins hands-down. 
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Terry Ruprecht
RV-9A Tip-up; IO-320 D2A
S. James cowl/plenum
(Dues paid thru Nov '18)
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03-10-2014, 03:56 PM
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Join Date: Feb 2005
Location: Northwestern USA
Posts: 1,209
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To paraphrase Carnac the Magnificent...
"Pneumatic squeezer, 90-degree angle drill, and beer."
"What are three things that aren't absolutely required to build an RV, but make it way easier?"
mcb 
__________________
Matt Burch
RV-7 (last 90%)
http://www.rv7blog.com
VAF #836
Any opinions expressed in this message are my own and not those of my employer.
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03-10-2014, 03:58 PM
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Join Date: Jul 2009
Location: England
Posts: 470
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90 deg ... with lots of different length screw in bits .. The Pan American is great value - and you can get different heads for it that are not to expensive ... OR buy second hand Dotco - Ingersol Rand or similar high quality industrial grade ...
Never had a need for 45 on my 6 'no hole' kit ..
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Jan
Slooow RV6, no hole, builder in UK
Paid up for 2015 ...
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