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Brasso and Tumbling Media
bigoutside
Member Posts: 19,443 ✭
I've heard this isn't a good idea.
Supposedly makes the brass "brittle" due to the ammonia.
Ok. I'll take that advice from those who know more than I do... and there are a lot who know far more than I do.[:D][:D][:D]
But I'm wondering metallurgically, what does ammonia do to the brass to make it brittle?? And how does that evidence itself?
Supposedly makes the brass "brittle" due to the ammonia.
Ok. I'll take that advice from those who know more than I do... and there are a lot who know far more than I do.[:D][:D][:D]
But I'm wondering metallurgically, what does ammonia do to the brass to make it brittle?? And how does that evidence itself?
Comments
Ammonia is a compound of hydrogen and nitrogen. Free hydrogen reacts with the metals of the brass, forming a hydride. Hydrides are brittle in nature. Evidenced by brass cracking instead of flowing when run thru yer dies.
Why can you use Brasso to shine your military insignia without bad effects? It is thicker, and rarely run thru a sizing die or subjected to exploding gunpowder.[:p]
If you find a rock shop, for $1 you can buy enough finely powdered abrasive to spice up your tumbling media for a year or two.
Ammonia is a compound of hydrogen and nitrogen. Free hydrogen reacts with the metals of the brass, forming a hydride. Hydrides are brittle in nature. Evidenced by brass cracking instead of flowing when run thru yer dies.
Why can you use Brasso to shine your military insignia without bad effects? It is thicker, and rarely run thru a sizing die or subjected to exploding gunpowder.[:p]
Ding...
I've heard this isn't a good idea.
Yep Don't do it- BTDT. In short, the chemical mixture is to hot for that application.
Much less expensive than the other stuff [^]
I agree with DCS Shooter, I use 3M polish too, no ammonia to worry about.
As of late, I jointed the SS pin tumbling crowd. You can use a Harbor Freight tumbler if you are on a budget. I use a Lortone rock tumbler, I have had for many years with the SS pins.
I shoot black powder carts regularity and with only 1 hour of tumbling these blackened cases are bright and shiny new inside and out.
I've tumbled with Brasso for years and it's never hurt any of my cartridges.
I have tried Brasso and regretted it. I does break down the metal. You do not want ammonia around copper.
I agree with DCS Shooter, I use 3M polish too, no ammonia to worry about.
As of late, I jointed the SS pin tumbling crowd. You can use a Harbor Freight tumbler if you are on a budget. I use a Lortone rock tumbler, I have had for many years with the SS pins.
I shoot black powder carts regularity and with only 1 hour of tumbling these blackened cases are bright and shiny new inside and out.
I have seen these pins listed for so-called 'wet' tumbling. What does that mean. Always been a walnut shell kinda guy so the SS pins thing is foreign.
Thanks.
quote:Originally posted by chiefr
I have tried Brasso and regretted it. I does break down the metal. You do not want ammonia around copper.
I agree with DCS Shooter, I use 3M polish too, no ammonia to worry about.
As of late, I jointed the SS pin tumbling crowd. You can use a Harbor Freight tumbler if you are on a budget. I use a Lortone rock tumbler, I have had for many years with the SS pins.
I shoot black powder carts regularity and with only 1 hour of tumbling these blackened cases are bright and shiny new inside and out.
I have seen these pins listed for so-called 'wet' tumbling. What does that mean. Always been a walnut shell kinda guy so the SS pins thing is foreign.
Thanks.
I still have 2 tumblers for light duty, but once hooked on the SS pins, that is all I do. No comparison as far as speed and cleanliness. It takes 24hours plus to tumble black powder carts on a vibrator, one hour on the pins. Tumbling is done wet and carts left in the sun to dry or 10 minutes in the oven on a cookie sheet 170 degrees. You tube has plenty of videos. Search Stainless steel pin tumbling.