Hinges and plastic control horns. - RCCanada - Canada Radio Controlled Hobby Forum
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Old 03-06-2006, 04:41 PM   #1
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I am: Albert P.
Join Date: Dec 2002
Location: Montreal - Quebec

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Hinges and plastic control horns.

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Making the slots for hinges would give me cold sweats and nightmares.
Now, with the advent of CA hinges and Great Planes Slot Machine my life has become easier.
But... but...

How do you drill the holes for those plastic control horns that have two holes and a holding plate with two holes already predrilled?
I end up coming always at different distances between holes than the top plate. Then, the holes in the holding plate don't align. This is when things are not so bad. This is usually with flat control surfaces. And I use a hand (finger) drill, not a motorized one.
But in surfaces that are not parallel in both sides... my cold sweats and lack of sleep come back. Very difficult to calculate the angle of drilling to come out at the same place in the other side, let alone having the holes be aligned.

How do you do it guys? Care to share techniques?
Once my hands and knees stop shaking I take the planes out of the car.
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Old 03-07-2006, 12:29 AM   #2
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I am: a Scratch Builder
Join Date: Jun 2003
Location: Simcoe, Ontario
Radio of choice:
JR 9503 & DX7
# of RCs: 50+

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How do you drill the holes for those plastic control horns that have two holes and a holding plate with two holes already predrilled?
Once I have the control horn lined up where I want it, I mark the holes with a T-pin to just puncher the covering. I then lay the part flat on the work surface and push the T-pin straight down to the work surface. Then I lift the part up and then push straight through the balsa. I now use the pin holes as guide holes for my small finger drill and enlarge to the size of screw I am using. I also check the other side during the pin stage. You can always adjust the drill a little bit while enlarging the hole to help align the holes up if you are a little out when using the T-pin.


If you want awesome, you have to scratch build it!
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