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« on: October 25, 2010, 03:38:31 PM »
medicineman1987
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Hey guys, I just finished painting my coro trainer with acrylic (Fevicrly).. The wings are thermocol and are holding the paint quite well.. the coro fuselage isnt Bang Head The paint scratches right off.. One landing and the underside will be back to its original colour.. What do I do? Can I clear coat it with something?  Help Me Also does oil paint stick well on coro (for my next plane)?

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« Reply #1 on: October 25, 2010, 03:55:13 PM »
controlflyer
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when I am sober my heli is drunk..



Sent you a pm!
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« Reply #2 on: October 25, 2010, 07:29:08 PM »
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Hey you guys Angry! Please share these secrets openly (no PM business!) so that we lesser mortals can also benefit.......... Head Scratching
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« Reply #3 on: October 25, 2010, 07:31:31 PM »
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Error regretted VC!
Its " I've replied to your pm"
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« Reply #4 on: October 25, 2010, 07:34:56 PM »
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Tell us Buddy - how is it done? About 5 years ago, I had one of my cars painted. The bumpers of the car were painted the body colour. At that time, the painter had used a rather expensive plastic primer on the bumpers. Till date, the pain has not cracked or peeled. I used the same stuff to highlight the letterings on my tyres. I painted it directly on to the rubber and followed it up with white paint. The paint lasted for atleast a year.

I wonder if this stuff will work on coro. Head Scratching
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« Reply #5 on: October 25, 2010, 09:52:35 PM »
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Make sure the coro is scuffed up good with a fine grit sandpaper or you can even use a scouring pad that is used for cleaning dishes.  One thing nice about coro, it won't dissolve like foam, so almost any paints will work.
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« Reply #6 on: October 25, 2010, 10:08:28 PM »
medicineman1987
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I forgot to sandpaper it since this is my first plane.. Now I don't want to paint it all over again Sad What kind of clear coat can I use?

Tell us Buddy - how is it done? About 5 years ago, I had one of my cars painted. The bumpers of the car were painted the body colour. At that time, the painter had used a rather expensive plastic primer on the bumpers. Till date, the pain has not cracked or peeled. I used the same stuff to highlight the letterings on my tyres. I painted it directly on to the rubber and followed it up with white paint. The paint lasted for atleast a year.

I wonder if this stuff will work on coro. Head Scratching

What is this stuff sold as VC sir?
Make sure the coro is scuffed up good with a fine grit sandpaper or you can even use a scouring pad that is used for cleaning dishes.  One thing nice about coro, it won't dissolve like foam, so almost any paints will work.

I'll keep that in mind.. My next plane will be oil painted.. thanks sir Smiley
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« Reply #7 on: October 25, 2010, 10:18:11 PM »
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I think any automotive paint shop will have the stuff, try looking for 'plastic primer for bumpers'.
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« Reply #8 on: October 25, 2010, 10:25:04 PM »
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Guys,
I too painted coro using fabric based colors, and as rcfoamcrafters suggested, I advised doctor to use the same method of a fine grith sand paper formerly.
Doctor, am duplicating some things we spoke here:

He had problems while painting, he said that the paint would streak out while he moved the brush.
I suggested him to use a "hog hair" paint brush and to sand the coro fuselage before applying the first coat.

Lastly, medicineman, if you find it difficult to peel off the paint, try using a cello tape, the 2" ones, may help.
Then sand and repaint!
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« Reply #9 on: October 26, 2010, 12:48:02 AM »
medicineman1987
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Hey Dorwin, i didn't mean streaks from the paintbrush.. Even the smallest scratch removes the paint.. Like running the handle (non business end) of the paintbrush across the surface..
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« Reply #10 on: October 26, 2010, 01:52:08 AM »
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medicineman1987,

Check that your coro perhaps not affected by thinnber.

The paints (Normal Synthetic paint) have NC Lacquer with solvent like thinner/Tarpintine, french chalk, and  of courese dye/Pigment oil soluble.

Id your coro does not affected by Thinner, just peel off, old paint, Sand, and again paint.

If you need, more soft paint that not crack, just add Polythene, to thinner and add this to your regular paint. Generally good polythene can be found, baby-food milk supply pouch.

Hope this may help.

Thanks
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« Reply #11 on: October 26, 2010, 11:18:30 AM »
controlflyer
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Doctor!
I must have misinterprated this!
Anyways, we'll see about this problem in a months time!

Busy at work man!!
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« Reply #12 on: October 26, 2010, 03:12:15 PM »
medicineman1987
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@KALYANPRODHAN Thanks for the info sir... Will paint my next plane like that..


Is there anything which I can use to give a clear coat to the paint so that I don't have to paint it all over again? I really like the paint job.. Which brand/type of clear coat can be used?
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« Reply #13 on: January 08, 2019, 12:52:32 PM »
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Praharit  pigments can be incorporated in all coating systems. Pearl pigments are widely used in Automotive OEM, Car refinish Paint, architecture and decorative paint, Coil and powder coating.

Tips for the best results with Pritty pearl pigments in the paint industry:

1. Dosage/loading
Pearl pigment dosage is determined by many factors, such as its coating thickness, the method itís applied, its transparency, and the surface area to be covered and the final pearl effect. In general, a sufficient dosage is 5 - 10% in weight. Sometim
Tips for the best results with Pritty pearl pigments in the paint industry:

1. Dosage/loading
Pearl pigment dosage is determined by many factors, such as its coating thickness, the method itís applied, its transparency, and the surface area to be covered and the final pearl effect. In general, a sufficient dosage is 5 - 10% in weight. Sometimes, a weight of just 1% can produce a beautiful transparent and sparking effect. For thin coatings, the dosage should be increased to around 20 - 30%. Be warned, too many pearl pigments doesnít guarantee that the platelet-shaped effect pigments will be aligned evenly to the surface and will have their full optical effect.
 
2. Pre-wetting, dispersion and stirring
Pre-wetting the pearl pigments with solvent or binder components usually makes it easier for dispersion and the best way is to make it into slurry to avoid foam coming out while stirring. To keep a consistent colour shade and avoid flocculating, optimal length of time for pre-wetting is 24 hours.Pearl pigments are easy to disperse and normal stirring is sufficient, so never use high shear machines, which will destroy the pearl pigment platelets and reduce or totally lose the pearl effect.
 
3. Methods to improve hiding power of pearl pigments:
a.   Small particle size can improve hiding power, but one can only get a silky gloss effect with no shining. To get the ideal pearl effect and hiding power, you can choose to add some small particle sizes instead of using all big particle sizes.
b.   Adding metal powder to the ink can improve its hiding power (like Aluminum powder, bronze powder) and the dosage of pearl pigments should be about 5 - 10%.
c.   To formulate dark colours, a small proportion of carbon black can improve the hiding power and also enhance the reflection colour of pearl pigments.
d.   To formulate lighter colours, TiO2 (Titanium Dioxide) will be helpful to strengthen the hiding power. But, since it is not good for pearl effects, you will need to use more pearl pigments to enhance the reflection colour. The best way is to use as little TiO2 as possible to reach the best hiding effect.
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