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Old 05-01-2012, 03:09 AM
Deus Machine Deus Machine is offline
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Need a little help 'weathering' on acrylic.

New poster! Excuse me if I missed something, but digging around didn't jump anything out at me. I admit it's an odd method, so excuse my rambling.

Doing the base coats on a painting that will employ airbrushing, but since the acrylic is the base and probably the solution, figured it would work well here.

For reference, at the moment I'm using Artist's Loft materials. Hardly high-end, I know, but the set was on clearance cheap enough that it was worth it to buy for the modeling paste and texture medium alone.

I mixed these 50/50 and added a little black to tone it, then applied across canvas for an effect almost exactly like the local cement walls.

The problem is that it looks brand new, and I need a basis that looks weather beaten and run-down, like the back alleys of the city. Modeling websites help a little, but however much guys might like rust on their trains and exhaust burns on their P-51, they're hardly all that interested in the collected grunge of modern-day gutters.

So, between acrylics and airbrush techniques, I need ways to make realistic water marks, rust stains, cracks, and mud splatter, and I haven't the foggiest on how to do that on a 'cement' base.
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Old 05-01-2012, 03:51 AM
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paznbaz paznbaz is offline
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Re: Need a little help 'weathering' on acrylic.

I have done that ageing effect for years having worked as a scenic artist. It is all done with pretty much dirty water using various colours eg yellow ochre, greys, sienna black and white. Pretty hard to describe method, but paint b/ground with scumbled mix of colours, when dry use a large paint brush (4" 6") and flick dirty coloured washes on top. If you stand painting vertical while doing this it will run down giving effect of dirty water etc. If you lay b/g down when flicking you can also flick methylated spirits on top and will make water curdle and give another effect. It need practice to get it right so try on some masonite or something else first. Hope this helps.

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Old 05-01-2012, 05:00 AM
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idylbrush idylbrush is offline
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Re: Need a little help 'weathering' on acrylic.

Was wondering if sponging and blending might be of some help as well.
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Old 05-01-2012, 08:53 PM
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paznbaz paznbaz is offline
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Re: Need a little help 'weathering' on acrylic.

Here is an example of ageing on a treasure chest toybox I made for my grandson. Made from MDF board with upholstry tacks etc. and painted and aged for him. 120cm long.


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