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IHC Member 1613
posted
I want to try and desolve a part of a stem that is broke off and is stuck in a watch crown.. What is the mixture of alum to water that I need to use…
 
Posts: 1966 | Location: Chesapeake City, Maryland in the USA | Registered: September 27, 2011
IHC Member 1511
posted
Gary, I typed alum in the search tab and found quite a bit of information. Buster said to use 1 alum to 3 parts water. Hope this helps. Gary
 
Posts: 156 | Location: Rainelle, West Virginia in the USA | Registered: December 15, 2010
IHC Member 1613
posted
Thanks for the input Gary....I will try Busters formula and see what happens...Thanks again...
 
Posts: 1966 | Location: Chesapeake City, Maryland in the USA | Registered: September 27, 2011
IHC Member 1650
posted
I've had excellent results using alum. I suggest putting the crown in a shot glass with water and as much alum as will dissolve in the water. It works best (fastest) if you can apply heat to it. I use the hand-bluing heater that was described in this forum several years ago, but a hot plate would work well. It should be warm, but not boiling. When the alum is working, you'll see small bubbles coming up from the steel.
 
Posts: 348 | Location: Illinois in the USA | Registered: November 17, 2011
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