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Author Topic: Paint compatibility  (Read 2202 times)

Jonty

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Paint compatibility
« on: May 20, 2007, 07:07:23 PM »

Help!

Was just about to spray Plastikote onto Holts primer, when it occurred to me that they may not be compatible.

Anyone know the answer?
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Shipmate60

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Re: Paint compatibility
« Reply #1 on: May 20, 2007, 07:37:06 PM »

I dont know the answer so why not try it on a piece of scrap then tell US.

Bob
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Tug-Kenny

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Re: Paint compatibility
« Reply #2 on: May 20, 2007, 08:22:03 PM »


Paint can be a funny thing,  with a mind of its own.

Today, I didn't like the colour brown on one of my shapes ( in the Humbrol range)  and decided to repaint it over with Humbrol white.

Yes,, you've guessed it,  the Bl****  lot curdled.    :o

I shall be be more wary next time, and keep away from changing colours


Cheers...Ken
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chingdevil

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Re: Paint compatibility
« Reply #3 on: May 22, 2007, 12:53:24 PM »

I know Halfords car paints do not like Humbrol Paint, you get a very nice crinkly effect from that.

The other Brian
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Stavros

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Re: Paint compatibility
« Reply #4 on: May 22, 2007, 08:08:33 PM »

Absoloutly no problem at all hte only problem is if you go the other way ie holts on plasticoat.What you have got to remember is not to use car paints ever again on top of teh plasticoat as it will react.Trust me on this one I should know as I am  paintsprayer by trade ;)Stavros
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Jonty

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Re: Paint compatibility
« Reply #5 on: May 22, 2007, 09:16:34 PM »

Thanks, Stravros et al.
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RickF

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Re: Paint compatibility
« Reply #6 on: May 22, 2007, 10:57:30 PM »

An old "painter and doper" once told me that the way to remember it was: "You put Salt on Chips (Synthetic on Cellulose), but not chips on salt".

Years ago this was straightforward. However now the trick is identifying which is the synthetic and which the cellulose!

Rick
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Stavros

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Re: Paint compatibility
« Reply #7 on: May 22, 2007, 11:15:41 PM »

Easy the enamel smells like house paint and the cellulose/acrylic is similar to pear drops stavros
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GreeboTheCat

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Re: Paint compatibility
« Reply #8 on: May 24, 2007, 04:45:35 PM »

I was told that it's the thinners in use that can cause problems - If you spray cellulose first, once it hits the surface of the thing your spraying, the thinning medium starts evaporating and the paint dries out. Once it's dry, it's just paint so you can then spray on top with enamal or acrylic. Going the other way - spraying enamel first and then spraying cellulose next - the thinning medium in the cellulose attackes the enamel paint as its drying - result: an attack of the crinkles.  Here endeth the lesson. Stands well back ready to be flamed!!!!! ;D

Greebo
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boatmadman

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Re: Paint compatibility
« Reply #9 on: May 24, 2007, 04:51:22 PM »

Easy the enamel smells like house paint and the cellulose/acrylic is similar to pear drops stavros

Unless you have no sense of smell!
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