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-   -   Perpendicular drilling, free hand (https://vansairforce.net/community/showthread.php?t=106014)

Dorfie 10-30-2013 10:16 AM

Perpendicular drilling, free hand
 
Does anybody have an easy, practical way to drill perpendicular to the surface using hand held drill. I find it especially challenging drilling the door hinges (RV10) from inside! Any slight angle and the screw heads on outside highlights your mistake.
Thanks.
Johan

N15JB 10-30-2013 10:22 AM

I would just eyeball it best as you can. If you don't like the result, glass it in and try again. Once completed, those screws will only be visible to NBA players.

Jim Berry
RV-10

Ken Martin 10-30-2013 10:25 AM

Do you normally centerpunch first before drilling? This helps tremendously and the only other idea I would have is to create a drilling fixture if you feel it's worth the trouble.

dougmattson 10-30-2013 10:35 AM

Try one of these http://www.aviationpros.com/product/...70-drill-block

larrynew 10-30-2013 11:00 AM

I like to use this. In tight spots I've used the center guide without the plastic housing.

http://www.averytools.com/prodinfo.asp?number=25783


stinson pilot 10-30-2013 11:00 AM

We use these a lot in the industry.

http://www.ebay.com/itm/7-PC-Drill-B...-/141097447572

Edit: Larry beat me to it..

Bavafa 10-30-2013 11:49 AM

Quote:

Originally Posted by larrynew (Post 821272)
I like to use this. In tight spots I've used the center guide without the plastic housing.

http://www.averytools.com/prodinfo.asp?number=25783


Nice!!!!
I think I need to build another plane just so I can use these :)

BobTurner 10-30-2013 04:11 PM

When drilling into something shiny like aluminum, look at the reflection of the bit and the bit itself - they should be a straight line, not a 'V'. You need to look both from the back and from the side.

DanH 10-30-2013 05:03 PM

There is always some way to make a jig.

http://www.kitplanes.com/issues/30_1...s_20873-1.html

Sadly, it is "subscriber only" content...but you can cure that ;)

Greg Arehart 10-30-2013 07:56 PM

What Bob said works, provided the aluminum is not bent or curved.

Greg

Dorfie 10-31-2013 06:22 PM

Thanks for all the responses
 
Avery tool on order now.
Johan

Dorfie 10-31-2013 06:25 PM

Quote:

Originally Posted by DanH (Post 821422)
There is always some way to make a jig.

http://www.kitplanes.com/issues/30_1...s_20873-1.html

Sadly, it is "subscriber only" content...but you can cure that ;)

Dan,
I am not a subscriber to Kitplanes. I have so many subscriptions (professional and recreational) that I am slowly letting go of some. Please tell/motivate/educate me what Kitplanes bring to the table that makes it worthwhile.
Appreciated.
Johan

Andrew M 11-01-2013 12:50 PM

Yes there is
 
You can either cast a shadow that lies 90 degrees from where your eyes are, or use a vanity mirror. I prefer my "bean bag" mirror. It lays where and at what angle I place it, allowing me to "eyeball" 90 degrees from two positions at once.

rvbuilder2002 11-01-2013 01:08 PM

Quote:

Originally Posted by Greg Arehart (Post 821476)
What Bob said works, provided the aluminum is not bent or curved.

Greg

Works just as well on curves as long as the radius is nearly constant to each side of the hole being drilled.

DanH 11-01-2013 01:14 PM

Quote:

Originally Posted by Dorfie (Post 821829)
Dan,
I am not a subscriber to Kitplanes. I have so many subscriptions (professional and recreational) that I am slowly letting go of some. Please tell/motivate/educate me what Kitplanes bring to the table that makes it worthwhile.
Appreciated. Johan

Johan, it depends entirely on your needs.

In the context of this thread, I can tell you the Kitplanes crew is pushing very hard to maximize homebuilder content...hardcore how-to coverage of subjects useful to those who build and maintain EAB aircraft. It's an area nearly abdicated by others.

I can also say the subject list is far larger than you'll see here....fabric, woodwork, and welding being just three of many examples.

Is it for you? The only way to find out is to gamble $18 or so, for which you'll get both the future issues and the online archive of past material. If you like it, great. If you don't, the magazine did not meet your needs, and I know the editor will really appreciate hearing how it missed the mark.

N15JB 11-01-2013 04:58 PM

I subscribe to 8 aviation mags. (it's an illness). Kitplanes is my favorite, by far. Sorry for the thread drift.

Jim Berry
RV-10


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