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General control line discussion => Open Forum => Topic started by: Paul Taylor on June 14, 2011, 07:44:30 PM

Title: Drop of CA on brass sleeve --- How to unglue it?
Post by: Paul Taylor on June 14, 2011, 07:44:30 PM
So I got a drop of glue on my Tom Morris horn and glued the brass bushing to the horn wire. How in the heck do I free it?
It is already glued in the wing.  HB~> HB~> HB~> HB~> HB~> HB~>
Title: Re: Drop of CA on brass sleeve --- How to unglue it?
Post by: Gerald Arana on June 14, 2011, 07:59:44 PM
Paul,
Use a little heat. A pencil soldering iron should work fine. Good luck.
Jerry
Title: Re: Drop of CA on brass sleeve --- How to unglue it?
Post by: Paul Taylor on June 14, 2011, 08:06:36 PM
OK.. Be right back. H^^
Title: Re: Drop of CA on brass sleeve --- How to unglue it?
Post by: Paul Taylor on June 14, 2011, 08:33:30 PM
Bing-O !!!

Thanks!!!

Smooth as silk!
Title: Re: Drop of CA on brass sleeve --- How to unglue it?
Post by: Tim Wescott on June 14, 2011, 08:53:02 PM
And if that hadn't worked, someone would have suggested debonder.  But we're too late.
Title: Re: Drop of CA on brass sleeve --- How to unglue it?
Post by: Dick Pacini on June 14, 2011, 08:58:44 PM
I was about to suggest debonder, then I read about the pencil iron.

I have completed an ARF P40 that I dorked up the flipper hinges with too much CA.  I tried debonder, followed with Vaseline and oil.  They are better, but still squeak and stick.  I have a pencil iron but am concerned that I might melt the hinges before I get them freed up.  I also have a heat gun but am afraid of damaging the covering.  Any suggestions? 
Title: Re: Drop of CA on brass sleeve --- How to unglue it?
Post by: Paul Taylor on June 14, 2011, 09:10:30 PM
Dick,
If you are talking about the hinges, I would suggest that you pull the pins on them and clean out the C/A. Mine was on the brass sleeve on the control horn.

Good luck.
Title: Re: Drop of CA on brass sleeve --- How to unglue it?
Post by: Tim Wescott on June 14, 2011, 09:16:09 PM
I was about to suggest debonder, then I read about the pencil iron.

I have completed an ARF P40 that I dorked up the flipper hinges with too much CA.  I tried debonder, followed with Vaseline and oil.  They are better, but still squeak and stick.  I have a pencil iron but am concerned that I might melt the hinges before I get them freed up.  I also have a heat gun but am afraid of damaging the covering.  Any suggestions? 
Just based on feel, I think you'd melt the hinges before you got thing hot enough to affect the CA.  If the hinges aren't in straight then they could be as clean as could be and they'd still bind.  Moreover, even if debonder dissolves CA completely*, you'd still need to run a lot of it through the hinge to wash the stuff away -- anything that got left behind would harden up as soon as the debonder evaporated, and gum up the works.

* I don't know if it does.
Title: Re: Drop of CA on brass sleeve --- How to unglue it?
Post by: Steve Helmick on June 14, 2011, 09:17:19 PM
CA is supposed to give it up at about 140 to 150 F.  I would take a couple of spare hinges and some CA and see what happens when I put a pencil iron onto the hinge pin.  n~ Steve

Title: Re: Drop of CA on brass sleeve --- How to unglue it?
Post by: Dick Pacini on June 14, 2011, 10:06:18 PM
Dick,
If you are talking about the hinges, I would suggest that you pull the pins on them and clean out the C/A. Mine was on the brass sleeve on the control horn.

Good luck.

The hinges are set in notches in the elevators, so the pins are not accessible without gouging the dickens out of the works.
Title: Re: Drop of CA on brass sleeve --- How to unglue it?
Post by: Steve Helmick on June 14, 2011, 11:12:49 PM
The hinges are set in notches in the elevators, so the pins are not accessible without gouging the dickens out of the works.

Wouldn't be so bad on the bottom...it's an ARF, right? And you'll be putting sealing tape on the hingeline anyway. A dab of OD paint under the tape and you'd never notice. Better than not being able to fly it to its ability because of some sticky hinges. That, or make a new stabalizer and elevators?  D>K Steve
Title: Re: Drop of CA on brass sleeve --- How to unglue it?
Post by: john e. holliday on June 15, 2011, 07:47:51 AM
Now I know why I use toothpicks, the round ones to hold my pinned hinges in place.   H^^
Title: Re: Drop of CA on brass sleeve --- How to unglue it?
Post by: Randy Powell on June 15, 2011, 11:08:27 AM
You can put silicon lube in the hinges that are frozen. I've had some luck with freeing them up that way.
Title: Re: Drop of CA on brass sleeve --- How to unglue it?
Post by: rustler on June 15, 2011, 02:14:28 PM
I inadvertantly got a small drop of CA on the arm of our leather settee. (Don't ask).
I'd read how nitro will dissolve CA so tried it.
My god, the CA immediately went all soft and came off so easy.
Only thing is - we now have a small patch of superclean leather on our settee, standing out like a sore thumb.   ''
Title: Re: Drop of CA on brass sleeve --- How to unglue it?
Post by: Lauri Malila on June 15, 2011, 02:48:14 PM


 Hi.

 Talking about debonders, the CA ones contain usually nitromethane. Most CA's also dissolve in acetone (actually, I've found only a few CA for industrial use that don't. They are from Locktite brand). In hinges nitro is perhaps easier to use because it's more aggressive and does not evaporate so quicly as acetone.
 Often in my work, I have to manipulate very delicate and fragile metal parts by milling, turning, filing, polishing etc. I often support or hold the workpiece in place with CA or epoxy. Once finished, the CA is dissolved in acetone (I don't like to use nitro, it can damage the super-finished surfaces). To dissolve epoxy we use dimethylformamide. Ultrasonic cleaner helps, but I must be carefull that our safety boss doesn't see what I'm doing. L