The Old Glue Trick - Page 2 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 02-17-2009, 01:12 PM   #11
I am: Boolean21
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Re: The Old Glue Trick

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Hi Leslie,
I'm sorry to have responded here the way I did, I was quite put off by your response in my thread asking about plumbing help as you can probably tell. However, it is what it is and life has to move forward.

As for checking the glue joint, if you can't do what wayne suggests, OR if you are concerned about the joint itself (many times with Epoxy or even CA, the glue outside of the joint that you might be able to check will still be hard, but if the wood has absorbed glow fuel, the nitro will break down the glue if it has a chance to soak, ie, in between 2 pieces of wood).
The best thing to do with a joint that you are questioning is reinforce it, on a firewall this is easy to do usually. The easiest method is to drill some 3/32" holes through the fuselage into the edge of the firewall (assuming a 1/4" firewall, if it's thicker you can use a bigger hole) and glue in some 3/32" dowels into those holes to "pin" the firewall in place. Even though you can buy carbon fiber these days in a rod, I would personally still use wood dowel, only because the glue will "soak" into all the wood and create a more solid glue bond that won't fracture or decay with vibration. This same technique can be used on gear blocks, wing bolt blocks etc.

From my experience, even airplanes 20 years or so old, IF they aren't soaked with nitro fuel, have good glue joints. The wood itself has always deteriorated before the glue joints in my experience.

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Old 02-17-2009, 01:17 PM   #12
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Re: The Old Glue Trick

Originally Posted by Wayne MIller View Post
Hi Leslie,
I'm still naive enough to think RC Canada was built with the idea of helping others and building comradeship between modellers.


Hello Wayne

The above is a wonderful admission of your purpose on this site. Thankyou!

And thankyou for your kind help in answering my question

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Old 02-17-2009, 02:07 PM   #13
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Re: The Old Glue Trick

Unless the airframe was built using Ambroid or fish glue, you shouldn't have much trouble with the glue, more likely the wood will split and crack where the glue ends. All wood does this through dry/humid cycles unless it was treated very carefully.
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Old 02-18-2009, 12:45 AM   #14
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Re: The Old Glue Trick

LGMs solution is a good one. One change i would suggest is that bamboo skewers are used to pin. Bamboo is very strong in lateral cross section but very porous lengthwise. Thin CA applied to the exposed end will wick the length of the 'pin' and provide good adhesion throughout the length. No need to worry about applying glue to the bottom of the hole.
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Old 02-20-2009, 07:15 AM   #15
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Re: The Old Glue Trick

Just a little annectdote. Dragged out this old Hustler a few yrs ago after sitting since the mid 60s. seemed still sturdy so I threw a radio in her and took 'er up. After flying around a few minutes, one of the rudders blew off. rudder landed on the field so I kept on flying till the other one came off. Went into the slickest flatspin you've ever seen. Was going around in a blur but the sink rate was about 3 mph. Landed on the ground and just bounced a bit. Glued them back on with CA and it's been fine since. Motor is a K&B 21 ducted fan engine.
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Tried for my kamikazi pilots licence. Flunked the test.
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Old 02-20-2009, 05:52 PM   #16
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Re: The Old Glue Trick

enough said lets go flying
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