Author Topic: Turning brass to bronze  (Read 3383 times)

0 Members and 1 Guest are viewing this topic.

Offline kurt

  • Ensign
  • *
  • Posts: 30
  • Gender: Male
Turning brass to bronze
« on: 20 Jun , 2012, 09:29 »
Does anybody have any recipes for chemically treating brass to take on a bronze appearance?
 
Kurt

Offline Rokket

  • Administrator
  • *
  • Posts: 2,362
  • Gender: Male
  • Submarine Enthusiast
    • AMP - Accurate Model Parts
Re: Turning brass to bronze
« Reply #1 on: 25 Jun , 2012, 03:25 »
I do! I recommend the shortcut, but here's what I did:








I filed the snub hub to a point, and then soaked it in saltwater and vinegar for many, many weeks. It was faster to add a bit of hydrochloric acid.

http://www.rokket.biz/modelsweb/rokket/u557/prog1.shtml

AMP - Accurate Model Parts - http://amp.rokket.biz

Offline OldNoob

  • Commander
  • *
  • Posts: 327
Re: Turning brass to bronze
« Reply #2 on: 22 Dec , 2015, 23:29 »
Bumping this thread because i recently experimented with White Vinegar and Peroxide.
It actually does work but the smell can be unpleasant.
Mixing a small amount of 50/50 percent into a small glass jar with top and throw the parts in the mixture re seal it shake it from time to time and it works in a few days in the jar.
Or outside the jar, brush the brass with the mixture and letting it fully dry between coats sometimes it takes several coats.
« Last Edit: 22 Dec , 2015, 23:31 by OldNoob »

Offline Rokket

  • Administrator
  • *
  • Posts: 2,362
  • Gender: Male
  • Submarine Enthusiast
    • AMP - Accurate Model Parts
Re: Turning brass to bronze
« Reply #3 on: 24 Dec , 2015, 01:05 »
nice to know, both of those are easily available and in small quantities. I only had the hydrochloric because of some brick work at the time, but easier and cheaper to by vinegar and peroxide!
AMP - Accurate Model Parts - http://amp.rokket.biz

Offline OldNoob

  • Commander
  • *
  • Posts: 327
Re: Turning brass to bronze
« Reply #4 on: 27 Dec , 2015, 05:18 »
Been researching this a bit further and it seems for getting a weathered "bronze" your way is better Rokket.


The vinegar and peroxide method appears to be best for etching the brass in preparation soldering or gluing.

Offline Rokket

  • Administrator
  • *
  • Posts: 2,362
  • Gender: Male
  • Submarine Enthusiast
    • AMP - Accurate Model Parts
Re: Turning brass to bronze
« Reply #5 on: 27 Dec , 2015, 16:57 »
Interesting!
AMP - Accurate Model Parts - http://amp.rokket.biz