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Old Feb 17, 2007, 01:35 PM
aka Don Brickman
Andover MA
Joined Apr 2002
8 Posts
Idea
Precision ca applicator

Hi. I'm a long-time lurker, first time poster. I've been building electric planes for a few years; mostly balsa kits. I recently began work on my first micro model; Chris3D's MicroMoth: http://www.chris3d.com/files/micromoth.pdf (thanks, Chris!). I quickly discovered that my method for delivering ca to balsa joints was too clumsy for small models. After several false starts I came up with the idea shown in the attached photo. Cut the heads off two common pins and insert them point out into a handle; I used 0.25 sq balsa. Position them so that the tips are close but not touching. Now dip the tips into a drop of ca on a piece of waxed paper. Viola, a small amount of ca is held between the tips and can be precisely applied where you want. The amount of ca will depend on the spacing of the pins. Once you get the correct spacing you can cement the pins into the handle.
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Old Feb 17, 2007, 01:54 PM
Registered User
Severna Park, MD
Joined Jan 2006
179 Posts
Quote:
Originally Posted by dbrickma
... a small amount of ca is held between the tips and can be precisely applied where you want. The amount of ca will depend on the spacing of the pins...
NEAT! Compact, precise, adjustable and cleanable for future use! Thank you.
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Old Feb 17, 2007, 02:06 PM
Plantraco's Avatar
Saskatoon, Canada
Joined Jan 2003
2,235 Posts
Quote:
Originally Posted by Dave Smith
NEAT! Compact, precise, adjustable and cleanable for future use! Thank you.

It's a good way.

Sometimes though, you need an even smaller drop of CA.
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Old Feb 17, 2007, 02:18 PM
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micromad's Avatar
South of England
Joined Aug 2004
1,237 Posts
thanks for a neat idea and welcome to rcgroups.
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Old Feb 17, 2007, 05:43 PM
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peter frostick's Avatar
south shields. England
Joined May 2004
962 Posts
Don
That's a nice idea --- rather like a "vintage" adjustable ink drafting pen.
Another handy way is to use comercial telflon micro bore cyano tubing and stretch it thinner by holding it near a hot soldering iron and pulling gently: if you over heat it enough to make smoke, be sure to do a Bill Clinton and "don't inhale it" ---- as I recall it's not supposed to be at all good for you!!!!

Peter
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Old Feb 17, 2007, 07:30 PM
del
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north of Chicago
Joined Feb 2003
1,827 Posts
An old FF modeler's trick is to break the end off a sewing needle
at the eye, leaving a tiny fork. Works the same...

--del
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