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Author Topic: Painting Polyurethane  (Read 7191 times)
TRAINS1941
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« on: May 01, 2007, 06:02:15 PM »

I have the Western Scale Models Steam Engine it sits on a base of Concrete.  But the base is Polyurethane does anyone have any experience painting this material it needs to be a cement color then weathered with oil and grease.  Marc thought the master might be able to help with this!  Any ideas!
Actually anyone with ideas it would be helpful!!

Jerry
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George Carlin
finescalerr
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« Reply #1 on: May 02, 2007, 01:10:48 PM »

I had great success with a little experiment I tried on cast urethane some years ago. It should work with any kind of plastic:

Get some plain old white latex interior wall paint. The stuff I used was fairly thick, an advantage. I brushed a couple of coats (undiluted) onto some rockwork and let it dry for a couple of days. I had hoped to create a surface similar to that of plaster and that's what I got. I applied dilute color washes and they sort of soaked in and stained the surface. I compared the resulting model rockwork with some actual walls nearby and the overall impression was virtually perfect.

It was really easy and incredibly effective. -- Russ
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TRAINS1941
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« Reply #2 on: May 02, 2007, 07:01:42 PM »

Thanks Rich and Russ.  That's what this all about people helping people to get to where they're going.  Thanks for the replies.

Jerry
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George Carlin
Hector Bell
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« Reply #3 on: May 06, 2007, 02:12:18 PM »

Hi, Right on Russ and Rich, may I also suggest that if you can get it, self-etch primer is great. It ignores SUP's propensity to go "like water off a duck's back" and dries almost instantly. I bought a half litre and was still using it 3 years later.  It has a greeny yellow colour and takes all paints perfectly from cellulose (of blessed memory) to watercolours.
I reckon Russ's paint on top of self-etch would be bullet proof.  Hector
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