Eagler's Nest
General Category => Off Topics and General Interest => Topic started by: Gabe on January 26, 2014, 10:11:53 PM
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I just finished covering my tail feathers. ;D I was planning on using exterior latex house paint on them, but I've already filled in the weave with Polybrush. (I used it to glue down the tapes and went ahead and did it all) Can anyone clarify the whole Latex paint issue for me?
1. Do I HAVE to use the silver polyspray now that i've filled with weave with polybrush?
2. Can I put the exterior latex primer right over the polybrush?
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On my DE I used gray latex with 1/2 cup of aluminum powder in a 1/2 gallons That was enough paint to do everything with two coats using a 3" foam brush with each coat 90 degrees to each other. I finished it with a coat of high gloss latex enamel using a 6" foam roller. Paint held up fine for over three years now. I plan to just use gray latex primer on with some aluminum powder mixed in. If you want a shiny show room type of paint job, I would not recommend Latex.
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I just finished covering my tail feathers. ;D I was planning on using exterior latex house paint on them, but I've already filled in the weave with Polybrush. (I used it to glue down the tapes and went ahead and did it all) Can anyone clarify the whole Latex paint issue for me?
1. Do I HAVE to use the silver polyspray now that i've filled with weave with polybrush?
2. Can I put the exterior latex primer right over the polybrush?
I have applied high-quality latex exterior primer over Polybrush and Polyspray and had excellent results in each case. The primer seems to stick aggressively to about anything.
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Thanks guys, I'll go ahead and try the latex. Any ideas on where to get some aluminum powder?
By the way Sam, after I posted this question I got to looking at your LE build site and found some really good links to sites where people have tested the UV protection and durability of latex. So thanks for posting those.
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At my place in WI I have some I would give you, but I won't be returning there until May. I bought mine off eBay, not very expensive. Just be careful with the stuff, explosive and dangerous to inhale in the powder form. Once it is in the paint, no problem.
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I bought some from Amazon. Also available on Ebay. 1 or 2 lb quantities (or more) are available. I mixed it with Glidden Gripper and it really improved the opacity of the primer. Didn't use it for UV protection.
Rob
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is there a way to coat over the latex primer with a higher gloss paint or are you stuck with Latex?
I was considering a future project using latex up to the last coat and then using something like urethane for the last shinny coat. Any way that would work?
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is there a way to coat over the latex primer with a higher gloss paint or are you stuck with Latex?
I was considering a future project using latex up to the last coat and then using something like urethane for the last shinny coat. Any way that would work?
Weasel, on my first plane (Fisher Super Koala) I primed the fabric with flat black latex and finished it with automotive polyurethane. It turned out pretty good but I would stay with all latex now. Latex can be color sanded and buffed for a mirror finish.
That was twenty years ago, it has been proven since then that a titanium oxide-based white latex primer has the best UV protection.
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Thanks Sam,
I think that is how my Fisher Classic is. I will check with Dad. he built it may moons ago.
The paint is starting to crack in places. I know he said he put flex agent in it but it was 20 years ago. Still looks good but just some cracks here and there.
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Sam, How do you "color sand" a latex paintjob??
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I am assuming he is talking about this. http://home.comcast.net/~mmorrison123/Latex.htm (http://home.comcast.net/~mmorrison123/Latex.htm)
Sam may have more information.
Sam, How do you "color sand" a latex paintjob??
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I am assuming he is talking about this. http://home.comcast.net/~mmorrison123/Latex.htm (http://home.comcast.net/~mmorrison123/Latex.htm)
Sam may have more information.
Sam, How do you "color sand" a latex paintjob??
Yes, that is the link. You would need to spray the latex top coats but cutting and buffing would be the same process as used on polyurethanes.
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Is it necessary to use a polybrush as a first coat or could the first coat be latex?
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I used latex gray primer with some aluminum powder mixed in o my DE with no bad effects.
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How much aluminum powder per pint/quart/gallon? Brushed on or sprayed on? Thinned with windshield washer fluid at 59%?
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I used latex gray primer with some aluminum powder mixed in o my DE with no bad effects.
I have noted that elsewhere around the net a white undercoat is advised if your top coat is to be yellow... I found I could not get a vivid yellow with Polytone over the silver Polyspray in the Stits process...
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I am trying to find out if anyone has used just latex without polyspray as an under coat. Should I just use latex as a fill coat with aluminum powder on naked polymer/dacron fabric?
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I am trying to find out if anyone has used just latex without polyspray as an under coat. Should I just use latex as a fill coat with aluminum powder on naked polymer/dacron fabric?
The latex pro that posts on the Forum is here: http://wienerdogaero.com/LatexProcess.php
I don't know if Malcolm answers private messages but you may find your answer just looking at his site...
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Thanks Steve it does answer all my questions.
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Hi guys,
I do try to check the forum and emails often. I'm glad you found the website helpful. If I you have any other questions I would be happy to chat. BTW, I'm now experimenting with 3M FastBond latex contact cement. I'm told that it's the same thing as Stewarts EkoBond. It looks the same, smells the same, and acts the same at about half the price.
Malcolm Morrison
Wiener Dog Aero
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Is it necessary to use a polybrush as a first coat or could the first coat be latex?
The first 2-3 coats can be thinned (water) latex white primer. It will bond tenaciously to the fabric and provide UV protection. See Malcom Morrison's notes, seminar, and web site (http://home.comcast.net/~mmorrison123/Latex.htm) for more info about priming. A foam brush will force the primer down into the weave of the fabric.
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I'm now experimenting with 3M FastBond latex contact cement. I'm told that it's the same thing as Stewarts EkoBond. It looks the same, smells the same, and acts the same at about half the price.
I was concerned about using the EkoBond over the Stitts EV-400 epoxy varnish that I used on the wing. So I emailed the people at Stewarts, and this is the reply that I received today:
Because our glue (EkoBond) is water based, it can be used with any of the other glues.
Because you are building a Legal Eagle, you can switch systems at any time.
Marjie
I'll be interested to know how your experiment with the 3M cement goes.
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I used Glidden Gripper primer under the yellow on my DE. One cross coat brushed into the weave. Then a sprayed coat with aluminum powder mixed in, then another coat to whiten it up. Yellow doesn't seem to cover very good, especially over the green Stewart's glue. The aluminum powder makes the base coats more opaque so that the glue doesn't show through, especially when there is strong light on the other side. The yellow remained fairly translucent otherwise. My fuse has no aluminum powder, but I used the linen colored glue on the fuse which covered better than the blue/green. I would use that for the whole plane if I had it to do again. I learned as I went and close examination will reveal various shades of yellow on different parts of the plane! Oh well, good enough for me.
I used Sherwin Williams color paint thinned with windshield washer fluid to a consistency that my HVLP gun would handle. I don't know if it's the paint or the thinning, but I have virtually no fuel resistance even with multiple coats of wax. The paint turns to goo in short order. I have to be really careful when fueling. I'm looking at doing a top coat around the tanks of a clear water based epoxy.
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Which Sherwin Williams paint did you use? I used the high gloss stuff in the green cans and it holds up to fuel very well. There has to be something different.
Malcolm Morrison
Wiener Dog Aero
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It's Resiliance exterior in the blue can. Gloss yellow.
Rob
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I'm having significant trouble getting latex to cover ekofill. And while I'm working on that I am working on a backup idea that may cheaper and better.
I see a few of you are mixing aluminum powder in your latex primer for undercoat.
I want to use an aluminum mixed latex primer as my undercoat or primer coat.
Where did you get your powder? And are there important spec or type to use?
How much did you mix per gallon?
Thanks for your help.
Johnny Robertson
texasdeadstick(at)yahoo(dot)com