[TheForge] brazing revisited

[Peter Fels & Phoebe Palmer]

A good particle filter will take out most of the zinc fumes...not all.

Woolley wrote:
> Andy,
> 
> I have tig welded architectural bronze(zinc alloy) and could not avoid 
> burning zinc.  Stay away from the fumes obviously and it doesn't hurt to 
> coat you mucus membrane with milk before you weld.
> 
> Bill Woolley
> 
> 
> 
> 
> 
> 
> Andy Gladish wrote:
>> Thanks- the pencil trick worked very well with plumbing solder, but I  
>> don't think it makes a strong enough joint- I'll try one of these with  
>> silver braze.
>> The Harris 15% silver really is a pleasure to use, though color match  
>> isn't very good (on red brass pipe).
>> So far best results come from TIG weld with Silicon Bronze filler, though  
>> the zinc in the pipe has an annoying tendency to cook off at a few degrees  
>> above welding temp...takes a light touch indeed to get a decent bead.
>> There's a kind of momentum as I heat the pipe, once its hot enough to be  
>> willing to weld, difficult to back off so that the zinc doesn't burn off.
>> Fun stuff.
>> andy
>>
>> On Thu, 28 Jan 2010 08:05:40 -0800, <Grover.Richardson at gtri.gatech.edu>  
>> wrote:
>>
>>   
>>> Lenox Sterling(r) ColdCoat(r) Thermal Shield Paste 32 oz. WS80326 1UYK4  
>>> 36.60
>>> Markal Cool Gel Heat Barrier Spray 16 oz. 83495G 2AGV8 13.92
>>> Cool Blue(tm) Heat Sink Paste 11 oz. 91861 5KH10 11.48
>>>
>>> Just found this.
>>>     
>>>> From Grainger.com
>>>>       
>> ______________________________________________________________
>> TheForge mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/theforge
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:TheForge at mailman.qth.net
>>
>> TheForge mail list group photo site is
>> http://www.photoaccess.com
>> Login: blacksmithblacksmith at hotmail.com
>> Password: anvil
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>>   
> 
> ______________________________________________________________
> TheForge mailing list
> Home: http://mailman.qth.net/mailman/listinfo/theforge
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:TheForge at mailman.qth.net
> 
> TheForge mail list group photo site is
> http://www.photoaccess.com
> Login: blacksmithblacksmith at hotmail.com
> Password: anvil
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>