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Reglueing older airframe? - 3/24/2011 3:54 AM   
moodier



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From: Yuma Az,Balsam Lake,Wi., WI, USA
Status: offline 		I just purchased a pretty old airframe for a big bipe,I find that the stringers break loose easily glue is very dark colored and brittle!Wonder what I should use to strenghten up this plane!Looks like I need to go over all the joints with something but onsure what?Any hints Please!!Thanks!

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RE: Reglueing older airframe? - 3/24/2011 4:29 AM   
vicman



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From: Valdese, NC, USA
Status: offline 		I usually hit things like this with thin ca.


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RE: Reglueing older airframe? - 3/24/2011 5:10 PM   
Michaelj2k



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From: Newark, DE, USA
Status: offline 		What vicman said. Can you post some pictures of what you have? We like old airplanes.

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RE: Reglueing older airframe? - 3/24/2011 6:34 PM   
BMatthews



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From: Chilliwack, BC, CANADA
Status: offline 		This is a tough one. Old glue that for some reason was not the proper type to use or that has become frail from exposure to bad conditions is going to be hard to fix.

First you have to understand that adding glue to the outside does very little if it doesn't wick into the contact point of the old joint. A glue joint's strength comes from the thin film bonding the fibers together in close contact. Smearing or buttering glue onto the outside does very little in this regard.

About all you can do is try a drop of the watery thin forumla CA applied to the outside and hope that it wicks into the poor structure of the existing joint and hardens things up.

Also you will want to check the joints that you broke so easily to see if it's the actual glue that failed or did the surface of the wood actually bust away and is still stuck to the glue. If it's the wood that broke away then it's possible that the storage conditions were such that the wood has become damaged due to a number of various possible causes.

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RE: Reglueing older airframe? - 3/25/2011 2:49 AM   
CoosBayLumber


 

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Status: offline 		I sort of go along with what Bruce mentions here. Up front watch out for stringers coated with glow oils. Nothing sticks to that.

Wm.

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