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03-10-2014, 04:46 PM
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Join Date: May 2011
Location: Invercargill New Zealand
Posts: 15
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45 or 90
I picked up a Desoutter 90 deg. drill while working in the UK 30 years ago. It has colletts for 3/32: 1/8th: and 3/16 in.
Two months ago I bought another 90 deg. Desoutter new from an estate sale for $30NZ.- not because to other was worn out but this allowed two different sizes to be available with out changing.
The very small head size compared to adapters that other use, makes this British product the best I have used.
The 90 degree type with a short drill makes the accurate drilling out of rivets very easy as you can roll the head to get a good centre, while supporting the drill body close to where you are drilling. These will do anything that a 45 and pistol models can do.
Look on UK Ebay for one- that's where they are made.
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03-10-2014, 05:04 PM
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Join Date: Jan 2005
Location: NC25
Posts: 3,507
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90
I have a 90 and use it every once in a while. I have never seen a 45 and did not know that one was available till you asked about it and I Googled it.

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Gary A. Sobek
NC25 RV-6 Flying
3,400+ hours
Where is N157GS
Building RV-8 S/N: 80012
To most people, the sky is the limit.
To those who love aviation, the sky is home.
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03-10-2014, 05:19 PM
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Join Date: Sep 2007
Location: BC
Posts: 1,674
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Never used a 45. I like my 90 drill adapter though. I get to use it with the drill I like. 90 seems like a natural orientation to keep things squared up. Although, come to think of it, the 45 "may" be a bit better for the Horizontal stab SB if that's what you're thinkin.
Bevan
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RV7A Flying since 2015
O-360-A1F6 (parallel valve) 180HP
Dual P-mags
Precision F.I. with AP purge valve
Vinyl Wrapped Exterior
Grand Rapids EFIS
Located in western Canada
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03-13-2014, 07:02 PM
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Join Date: Jun 2011
Location: Nashua, NH
Posts: 536
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I have a Dotco 90, and love it It has saved me several times. With a short bit, you can get into really tight spots and get a perfect hole. Expensive, but worth it.
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Mike
RV-4 #2750
N654ML
IO-360
WW150C Prop
1018 lbs
Flying
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03-14-2014, 07:05 AM
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Join Date: Oct 2005
Location: 08A
Posts: 9,500
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Quote:
Originally Posted by Ironflight
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.
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Tell Louise you want a Jiffy modular:
http://jiffyairtool.com/site/wp-cont...12/catalog.pdf
But don't tell her it was my idea 
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Dan Horton
RV-8 SS
Barrett IO-390
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03-14-2014, 07:13 AM
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Join Date: Oct 2008
Location: Schaumburg, IL
Posts: 2,053
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And...a 45 is a bit awkward. It's easier to drill out fasteners with a 90 as you can more easily see the correct angle. I've seen (and probably done so myself) people really booger up a hole with a 45.
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Tony Phillips
N524AP, RV 9 (tail wheel)
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03-14-2014, 09:03 AM
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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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Thanks for all the replies guys. This just goes to prove the old adage about wisdom coming from experience - and if you don't have your own experience, get the wisdom from someone else's experience! I could see the potential pluses and minuses to a 45, but having not played with one, just wanted to probe the collective. I'd love to have the modular system there Dan - maybe I'll have to write something about angle drills and then I can write it off.... 
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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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