Advise Needed - Casting a faux bronze plaque

[Zinger]

I've got an idea for a "bronze" plaque I'd like to make. I'm going to cold cast it with some left over Smooth-Cast 325.

I need advice on one part. How would you create the pebbly texture on the background of the plaque, like this:



I plan to laser cut the lettering and graphics for the plaque, then assemble and distress it a little before casting. I've come up a couple ways to pebble the background, but neither of them seem practical.

Is there a simple way?

 

[BRDencklau]

That is made by plannishing the plate. I have executed this on a number of occasions as I am a metal worker with a specialization in finishing. If your material is conducive (foam, wood, etc) you can create this effect with a dremel and a ball rasp.

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[BRDencklau]

Here is an example of a finish I performed on some 1/4" bronze plate. After hammering, I buffed with scotchbrite, and antiqued with acid gel. Highlights were buffed back in with soft scotchbrite.

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[Zinger]

That is made by plannishing the plate. I have executed this on a number of occasions as I am a metal worker with a specialization in finishing. If your material is conducive (foam, wood, etc) you can create this effect with a dremel and a ball rasp.

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Just take the ball rasp and cover the exposed background surface with dimples at random depths. Then mount the smooth raised pieces to the background? I'm glad I asked. That's much simpler than what I had planned.

Thanks!

 

[BRDencklau]

Cheers!

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