[TheForge] Re: New Discoveries: Ersatz EZ Weld

[Peter Hirst]

Its the iron oxide part I dont understand.  As I appreciate it, flux has two 
purposes.  To shield the joint from oxygen so that no oxide on the sufaces 
can interfere with metal bonding, and also to actually dissolve any oxides 
or other impurities that are there and float them away from the weld. Adding 
oxide to the flux would seem to defeat one or both.

ANyway, EZ Weld does contain about 15 percent boric acid, so I guess I'll ad 
about that proportion of  COnmat to the mix and let the mineral content of 
the 20 Mule Team stand in for the "slag" component.  so my 30 bucks worth 
costs me about 1.50.  Still not bad.



----- Original Message ----- 
From: "David E. Smucker" <davesmucker at hotmail.com>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Tuesday, April 15, 2008 8:05 AM
Subject: Re: [TheForge] Re: New Discoveries: Ersatz EZ Weld


> Some smiths around here use a flux that is a mixture of boric acid (roach 
> kill) and iron oxide.  They get the iron oxide from the pottery suppliers. 
> I don't understand the chemistry of what is happening at the melt 
> temperatures.  This flux seems to work very well for them.
>
> Dave
> ----- Original Message ----- 
> From: "Peter Hirst" <saltydog335 at aol.com>
> To: <mspencer at tallships.ca>; "Sponsored by ABANA" 
> <theforge at mailman.qth.net>
> Sent: Monday, April 14, 2008 10:37 PM
> Subject: Re: [TheForge] Re: New Discoveries: Ersatz EZ Weld
>
>
>> Except band saw bits are steel.  Grinder bits are oxide.  I'm not sure 
>> what good they do in flux.  In fact, i am wondering if the spec sheet I 
>> saw on EZ weld could be correct.  Silica slag, sure.  But oxides?
>>
>>
>>
>> ----- Original Message ----- 
>> From: "Mike Spencer" <mspencer at tallships.ca>
>> To: <theforge at mailman.qth.net>
>> Sent: Monday, April 14, 2008 10:10 PM
>> Subject: [TheForge] Re: New Discoveries: Ersatz EZ Weld
>>
>>
>>>
>>>> So do I throw a bunch of scale or grinder dust in with the borax an
>>>> steel shavings?
>>>
>>> If you collect the grinder dust (or band saw chips) with a magnet, you
>>> can (mostly)  exclude non-ferrous bits, glass- and abrasive-dust
>>> from the wheel, underbody roadgrime and other unwanted detritus.
>>>
>>> Or maybe that doesn't matter.
>>>
>>>
>>> - Mike
>>>
>>> -- 
>>> Michael Spencer                  Nova Scotia, Canada       .~.
>>>                                                           /V\
>>> mspencer at tallships.ca                                     /( )\
>>> http://home.tallships.ca/mspencer/                        ^^-^^
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>
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