Cutting CA hinge locations (and CA hinges) - RCCanada - Canada Radio Controlled Hobby Forum
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Old 05-11-2011, 02:41 PM   #1
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Cutting CA hinge locations (and CA hinges)

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I'm very slowly working on an Alien Aircraft Dragon Seaplane. In putting together the tail/rudder, the plans show where to set the hinges, but calls for taking a regular CA hinge and cutting it into 1/8" strips. The tail/rudder uses 3 of these strips- so I have 2 questions:

1) My Slot Machine makes hinge slots for full-size hinges- is it a problem to use that anyhow, and just locate the hinges where they are supposed to be?

2) 1/8" hinges seem pretty small for a model this size (to an amateur, anyhow)- any thoughts on how performance might be affected if I use full-size hinges, or even double up the width to 1/4"?

The tail/rudder for this model is about 5/16" thick balsa, with the rudder being about 7 1/2" inches top to bottom, before adding Monokote (or its equivalent).
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Old 05-11-2011, 02:54 PM   #2
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Re: Cutting CA hinge locations (and CA hinges)

One of the best ways I ever found to do good job of CA hinges......

I would not use a slotting tool for CA hinges the hinge needs to be a tight fit and let the THIN ca wick down a hole in the middle as per link above.

As for number of hinges adding a few extra if you feel the need will not impact weight and if done properly will not matter to the surface motion. It will give you peace of mind.

Last edited by Nev; 05-11-2011 at 03:24 PM.
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Old 05-11-2011, 04:47 PM   #3
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Re: Cutting CA hinge locations (and CA hinges)

The way I do it is mark centre line of the trailing edge. Use an Xacto nife to slowly cut the slot or you can go to your LHS >Find small saw blades for Xacto and cut your slots with that. I believe the blade is # 13. Tom The blades are ZONA #13 micro saw blades.

Last edited by f4u; 05-11-2011 at 04:51 PM. Reason: New Info
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Old 05-11-2011, 06:35 PM   #4
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Re: Cutting CA hinge locations (and CA hinges)

You can buy the thinner blades built for the slot machine that are designed for use on CA hinges. I ordered mine with it. Been using it for 3 years on several builds, and never an issue or one coming loose. They are actually quite tight to go in when you use only 1 pass with the machine.
Lots of the exacto blades are thicker than the CA hinge, so you may end up making a bigger hole than needed. Just take you time with a thin blade. for the blades designed for CA hinges.

Last edited by Xanadu; 05-11-2011 at 06:45 PM. Reason: added link
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