Here are some samples I did for coloring the concrete foundations on the Corliss.
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fi263.photobucket.com%2Falbums%2Fii121%2Flab-dad-jones%2Ffordson%2FCorliss%2Fconcretesamples.jpg&hash=18a1e3952fa47be3faec76cf65f0fce91eabf71d)
The First is stained with Silverwood and then some tan and gray powders.
The second was stained with thinned Vallejo black gray and a light dust of gray powder which was scrubbed off under running water with a stiff paintbrush.
The third was also done with the Vallejo but green powder was used first followed by heavier coat of tan and gray.
The last was done with Vallejo and then sealed with acrylic flat clear. Once dry a darker (less thinned) coat of the Vallejo was repeated twice.
Being the machine (Corliss) is inside, in use and well maintained I think #3 is definitely out.
I'd appreciate some feedback or suggestions of other methods to try.
-Marty
Marty -
Experimenting with paint is fun!
#2 is promising, especially about 1/4 of the way up from the bottom. IMHO, #4 is a bit too dark making it look too much like weathered wood. And I agree - #3 is out. But I'm interested in the effect on #1. Flip it 180°, and it looks like concrete that's been rain-spashed with clay soil. I've seen that on foundations, and the color never seems to wash out. Of course, that won't work for your indoor scene.
Mark
In a hurry ???
I don't know how far Chuck is, but now I'll wait to see what you come up with. ;D ;D ::)
I'll put up some photo's as soon as I have time.
Jacq
I am still trying things out. #2 looks good for a newer machine. I have seen examples of all your samples in real life though. The rust colors are usually due to a rusty something on the concrete, so not so good for yours.
What Chuck says. Probably #2, maybe a subdued #4, but definitely neither of the two rusty blocks. In the proper context, though, either might look very good in an outdoor setting. Very useful experiment. Nice work. -- Russ
Marty:
No.2 gets my vote as well. They're all good for different applications, but I think 2 is probably closest for representing an indoor engine base, particularly for an engine that would be in constant use and well-maintained.
Paul
I know I'm a bit late on this but #2 is a nice match to this recycled slab of 50+ year old concrete sidewalk -
(https://www.finescalerr.com/smf/proxy.php?request=http%3A%2F%2Fi113.photobucket.com%2Falbums%2Fn214%2Faltterrain%2Fbuilding%2520projects%2Fobriens1.jpg&hash=d3ec4ee02b5cd83b2c34c0145ba22fcc9c6a4584)
-Brian