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Author Topic: KBS Clear great BUT.........don't let dope touch it.  (Read 2434 times)

Offline bruce finley

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KBS Clear great BUT.........don't let dope touch it.
« on: June 03, 2015, 06:57:45 AM »
So trying to do what should be a easy and small crash repair job on a Pathfinder profile arc that used dope for the under coats and used butyrate to attach the polyspan, then entire model was spray with one coat of KBS clear.  When trying to reattach new polyspan with dope over the KBS, wherever the dope hit the KBS, blister city!!  What a mess... ~^ ~^ ~^  Never again.

I'm assuming 2 part auto clears does NOT react the same way?  Please advise
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Offline Randy Powell

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Re: KBS Clear great BUT.........don't let dope touch it.
« Reply #1 on: June 03, 2015, 10:09:35 AM »
Yea, same thing with catalyzed polyurethane. When doing repairs, you have to sand the urethane way back and not let fresh dope touch it or you get the crinkles.
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Offline bruce finley

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Re: KBS Clear great BUT.........don't let dope touch it.
« Reply #2 on: June 04, 2015, 10:41:20 AM »
Didn't know that about auto clears..........

Bruce
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Offline Avaiojet

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Re: KBS Clear great BUT.........don't let dope touch it.
« Reply #3 on: June 05, 2015, 05:10:15 AM »
Quote from: bruce finley on June 04, 2015, 10:41:20 AM
Didn't know that about auto clears..........

Bruce

If someone has found a way to cover an open bay wing without using any dope at all, I would like to know about that process. Especially if the material adheres as well as dope and the results are tight as a drum.

This would eliminate dope for any repair.
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Offline Allan Perret

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Re: KBS Clear great BUT.........don't let dope touch it.
« Reply #4 on: June 05, 2015, 12:23:53 PM »
Quote from: Avaiojet on June 05, 2015, 05:10:15 AM
If someone has found a way to cover an open bay wing without using any dope at all, I would like to know about that process. Especially if the material adheres as well as dope and the results are tight as a drum.

This would eliminate dope for any repair.
Polycrylic, Polyspan, heat shrink.
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Offline bruce finley

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Re: KBS Clear great BUT.........don't let dope touch it.
« Reply #5 on: June 05, 2015, 12:40:10 PM »
Quote from: Allan Perret on June 05, 2015, 12:23:53 PM
Polycrylic, Polyspan, heat shrink.

I used that technique on my repair.  Issue is putting the dope back on around the edges of the polyspan and not letting the dope get into the clear.

OR

Are you saying use polycrylic on the open bays instead of dope??? :!
« Last Edit: June 05, 2015, 03:14:38 PM by bruce finley »
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Offline Allan Perret

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Re: KBS Clear great BUT.........don't let dope touch it.
« Reply #6 on: June 05, 2015, 03:41:31 PM »
Quote from: bruce finley on June 05, 2015, 12:40:10 PM


OR

Are you saying use polycrylic on the open bays instead of dope??? :!
Yes because Ajet wanted a process with no dope.  Bradley Walker published an article about this, there was a link on the UHP website.
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Allan Perret
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Offline Avaiojet

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Re: KBS Clear great BUT.........don't let dope touch it.
« Reply #7 on: June 05, 2015, 03:52:46 PM »
Quote from: Allan Perret on June 05, 2015, 12:23:53 PM
Polycrylic, Polyspan, heat shrink.

Understandable, then you would apply polyspan dry?
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Amazing how ignorance can get in the way of the learning process.
If you're Trolled, you know you're doing something right.  Alpha Mike Foxtrot. "No one has ever made a difference by being like everyone else."  Marcus Cordeiro, The "Mark of Excellence," you will not be forgotten. "No amount of evidence will ever persuade an idiot."- Mark Twain. I look at the Forum as a place to contribute and make friends, some view it as a Realm where they could be King.   Proverb 11.9  "With his mouth the Godless destroys his neighbor..."  "Perhaps the greatest challenge in modeling is to build a competitive control line stunter that looks like a real airplane." David McCellan, 1980.

Offline Allan Perret

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Re: KBS Clear great BUT.........don't let dope touch it.
« Reply #8 on: June 06, 2015, 08:49:16 AM »
Quote from: Avaiojet on June 05, 2015, 03:52:46 PM
Understandable, then you would apply polyspan dry?
Yes, as it is also done with dope.  Read the article.
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Allan Perret
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Slidell, Louisiana

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