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-   -   PAINTING WITH KRYLON (https://www.rcuniverse.com/forum/tips-techniques-180/5923015-painting-krylon.html)

glowplug50 05-30-2007 06:45 PM

PAINTING WITH KRYLON
 
I am curious about the Krylon paints. Is there any reason why I have to go over the color with a clear (satin or gloss)? Its a gas engine install and according to the manufacturer the colors as well as the clears are all acrylic and will be fuel proof. If I like the finish is there any reason to add the clear?

Gremlin Castle 05-31-2007 12:09 AM

RE: PAINTING WITH KRYLON
 
If you are staying strictly with gas, Krylon colors will work without the benefit of clear coating.
What can happen with uncoated color is a slight leaching of the color pigment from the surface if raw gas is left for more than a few seconds. That really is not a problem 99.9% of the time though.
Also, don't use straight denatured alcohol as a cleaner to remove oil residue because it will attack the surface of the paint in a hurry.

Sport_Pilot 05-31-2007 08:54 AM

RE: PAINTING WITH KRYLON
 
It will not be glow fuel proof. If you are like me and likely to spill glow fuel all over everything, including a gas powered plane, then it may be a good idea to use a glow fuel proof paint anyway.

jetboy2003 06-01-2007 09:02 AM

RE: PAINTING WITH KRYLON
 
What would be a good clear coat to make it fuel proof?

glowplug50 06-01-2007 10:26 AM

RE: PAINTING WITH KRYLON
 
Thanks for the info. Now my biggest problem is getting an even coat on without leaving dry spots. I am going over and over different area to get a good finish but the overspray creates other dry looking spots. Its not so bad on the fuse as its not a wide surface but the wing has a 16 inch cord and is difficult to cover.

Empennage Gunner 06-01-2007 10:36 AM

RE: PAINTING WITH KRYLON
 
glowplug50,

Is that paint drying flat or are you having the same issues as I here in SA with humidity?
I cannot get my Dupi-Color paint to dry in the semi-gloss color in which it’s made. Are you
shooting paint in the garage? ~ Wade

glowplug50 06-01-2007 11:13 AM

RE: PAINTING WITH KRYLON
 
Yes I am painting in the garage here in Houston. Humidity! Whats that? Yea, lots of humidity. Could be the problem. I could'nt get the clear to work at all unless i just hosed the area, but even then I kept getting a whitesh haze to it. I am painting solid yellow. I do have better luck in the afternoon though.

Sport_Pilot 06-01-2007 12:28 PM

RE: PAINTING WITH KRYLON
 
Sounds like you have a problem with fast drying paint and humidity. The paint has a slight refridgeation effect as it cools and small droplets of water condense causing the paint to have a white haze. To get rid of it you must paint in a cooler and or dryer area, or add slower drying thinner to the paint. Since you are using spray cans you can only paint in a cooler dryer area. If in a garage that join's air conditioned space, consider putting a fan by an open door and paint after this cools off the space.

Empennage Gunner 06-01-2007 01:24 PM

RE: PAINTING WITH KRYLON
 
Thats a good call Sport_Pilot. I think I'm going to invest in a cheap ac window unit just for the garage.
At the rate the weather is going, I won't get any good paint down until I get the garage cooled. ~ Wade

glowplug50 06-01-2007 01:35 PM

RE: PAINTING WITH KRYLON
 
All sounds good. I have a 48 inch fan going but it just seems to give me more problems. If I had painted this thing 4 weeks ago when we had such good weather I probably would not be experiencing so much trouble. I have never gotten along with paints to well to begin with.

In the mean time......

I took another shot at it after sanding the top surface of the wing down with some 320. I was able to get a darn near perfect cote down with the exception of a few dry looking places.. I don't know if I should sand the offending areas or just try shooting them again.

While I was at the hardware store I picked up a tapered rubber stopper (shaped like a cork) about 1/2 inch at one end and maybe 3/4 at the other. My ignition wires came with 2 wires coming from the module and one of the leads has a 4 pin plug on it that needs to be on the engine size of the fire wall. I drilled an 1/8 hole through the stopper and put a mandrel for my Dremel through it and chucked it up in my Dremel. I held it up against a flat file, fairly fine tooth, and turned the stopper down to a straight barrel with about a 1/8 inch shoulder on one end. I already had a hole in the fire wall that would just allow the 4 pin connector through so I turned the stopper down till it was very tight going in and then drilled the fire wall with a bigger drill bit to make it a good fit. Its easier to control the size of the bit then a piece of rubber turning 30000 rpm. I drilled the center of the stopper out just a little more to give room for the 2 leads and then split it length wise to allow putting the wires through the stopper. It fits nice and snuggly and I will probably coat it with a fine film of silicone sealant when I install it permentaly. It looks pretty good and should do a good jub of sealing the hole as well as protecting the ignition wires on both sides of the firewall from any kind of rubbing. It took a lot less time to do then it took me to write this.

edmoor 11-12-2009 04:37 PM

RE: PAINTING WITH KRYLON
 
i have used krylon......both primer and color.....then spray on a clear coat of laquer to make it fuel proof......works for me. paint must be dry before clear coat. no problems.

phatbob02 11-26-2009 06:48 AM

RE: PAINTING WITH KRYLON
 
I've used clear Lusterkote over Krylon paints. I let the Krylon cure, sometimes for a week, then spray a couple of very light coats of lusterkote clear. Once the light coats have dried I can clear as usual.

jetpack 12-01-2009 07:15 AM

RE: PAINTING WITH KRYLON
 
That Krylon clear is horrible. I build plastic models besides balsa ones and have used that clear before. Yuk. Goes on terrible and dries terrible with that milky look to it.

mark4563 12-10-2009 02:24 PM

RE: PAINTING WITH KRYLON
 
Do you think lusterkote will go over the automotive paint duplicolor? I have several models that need painting and duplicolor and krylon are very easy to work with just need to make them fuel proof.

phatbob02 12-10-2009 03:40 PM

RE: PAINTING WITH KRYLON
 
I just did my Dads Kadet Senior cowl with Krylon gloss black and shot Lusterkote clear on it 24 hours later with no problem.

Do a test with the Duplicolor on a small part. Just make sure it cures first before the Lusterkote is applied.


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