[TheForge] soldering v brazing v welding (fyi)

[Mike Porter]

Justin,
I should have read your message more carefully, a shade #2 face shield, is 
going to be hard to find. I would suggest #2 glasses behind a clear shield. 
Shade two glasses are easy to find. They are pretty standard among safety 
spectacles. If you already wear prescription lenses, you can get safety 
spectacles to go over them without going to goggles.

Gold shields only come in shade #4 and darker. The gold coatings are 
automatically about shade #3 dark; it is just in the nature of how they 
filter. If you could find a gold sputter coating on a clear plastic filter 
(you can't) it would still give you a blue-green view, because of the way 
gold reflects light (very heavy UV and IR reflection along with about 2/3 of 
the visible spectrum, transmitting only the blue and green colors with a 
touch of yellow).

I would suggest you try a clear Hot Mirror in either: 1.95" rounds that fit 
into cupeye (also called bug-eye) goggles for no color distortion within a 
reasonable price and reasonable protection. Write to Larry Zoeller for them. 
You will also find cupeye goggles have come a long way themselves; or in 2" 
x 4 1/4" clear rectangles used in welding helmets and burner goggles. Such 
hot mirrors will about equal the protection of a #2 ANSI shade by 
themselves. You can always add further protection and light color control 
from things like Pilkington Arctic Blue heat-absorbing glass or IRR glass 
(ITO coated) while still staying clear, or cut the ArcOne shade #1 filters 
into rounds if you're willing to accept some color distortion.

----- Original Message ----- 
From: "Justin Fellenz" <sunironworks at yahoo.com>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Friday, March 17, 2006 12:06 PM
Subject: Re: [TheForge] soldering v brazing v welding (fyi)


> Mike,
>
> I'll do that, thanks. I must confess to not having read the thing in
> detail--just thought it might be useful so passed it on. Good to know
> it's suspect.
>
> BTW--Will you be selling protective gear in Seattle? I'm having trouble
> finding a #2 shade face sheild at my local welding supply store. I know
> they're sub optimal, but I figger I can learn to judge color through
> the green for the $300 savings for one of those really cool gold
> setups, especially because I know I'd drop it or something someday and
> then cry. I prefer faceshields for damascus making because of the
> inevitable flying flux, and I wear glasses.
>
> JRF
>
> --- Mike Porter <michael.a.porter at comcast.net> wrote:
>
>> JRF
>> Harris (of torch equipment fame) makes a poor source for
>> enlightenment about
>> joining processes (good enough source for filler alloys though). This
>> is the
>> first time I've ever seen the term "coalescence" used that way. The
>> usual
>> description is "metallurgical bond" and the process is called
>> diffusion. I
>> would recommend you try Handy & Harmon's Brazing Book On Line if you
>> want a
>> quick soldering/brazing education: http://www.brazingbook.com/
>> I'm afraid you have to register with them nowadays, but it is worth
>> the few
>> minuets of your time. These guys actually know what they are talking
>> about.
>> Mikey
>>
>> ----- Original Message ----- 
>> From: "Justin Fellenz" <sunironworks at yahoo.com>
>> To: "Sponsored by ABANA" <theforge at mailman.qth.net>
>> Sent: Friday, March 17, 2006 9:34 AM
>> Subject: [TheForge] soldering v brazing v welding (fyi)
>>
>>
>> > Folks,
>> >
>> > A while back there was a discussion about the definitions of
>> soldering
>> > v welding v brazing, to which I added some confusion. Here's
>> something
>> > that just showed up on the metalshapers list.
>> >
>> > JRF
>> >
>> >
>> >
>> > Hi Bill & Alan:
>> >    Just to clarify the differences of Soldering and Brazing
>> > http://www.jwharris.com/jwref/faq/#def gives the following
>> definition.
>> > Further information is availble at the Harris site and from the
>> > American Welding Society website.
>> >
>> > Definitions
>> >
>> > What is the difference between soldering, brazing and welding?
>> >
>> > Soldering - The AWS defines soldering as a group of joining
>> processes
>> > that produce coalescence of materials by heating them to the
>> soldering
>> > temperature and by using a filler metal (solder) having a liquidus
>> not
>> > exceeding 840ºF (450ºC), and below the solidus of the base
>> metals.
>> >
>> > Brazing - Brazing joins materials by heating them in the presence
>> of a
>> > filler metal having a liquidus above 840ºF (450ºC) but below the
>> > solidus of the base metal.
>> >
>> > Welding - In welding, fusion takes place with melting of both the
>> base
>> > metal and usually a filler metal.
>> >
>> >    BTW,  Nice looking work Bill.  Thanks for sharing it with us.
>> >
>> > Roger VanHoozer
>> >
>> > __________________________________________________
>> > Do You Yahoo!?
>> > Tired of spam?  Yahoo! Mail has the best spam protection around
>> > http://mail.yahoo.com
>> > _______________________________________________
>> > Manage membership or unsubscribe at:
>> > http://mailman.qth.net/mailman/listinfo/theforge
>> > theforge mail list group photo site is
>> > http://www.photoaccess.com
>> > Login:  blacksmithblacksmith at hotmail.com
>> > password:  anvil
>> > ___________
>> >
>> >
>> >
>>
>>
>> _______________________________________________
>> Manage membership or unsubscribe at:
>> http://mailman.qth.net/mailman/listinfo/theforge
>> theforge mail list group photo site is
>> http://www.photoaccess.com
>> Login:  blacksmithblacksmith at hotmail.com
>> password:  anvil
>> ___________
>>
>>
>>
>
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam?  Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
> _______________________________________________
> Manage membership or unsubscribe at:
> http://mailman.qth.net/mailman/listinfo/theforge
> theforge mail list group photo site is
> http://www.photoaccess.com
> Login:  blacksmithblacksmith at hotmail.com
> password:  anvil
> ___________
>
>
>