[TheForge] Forging Chrome plated bumpers

[Bruce Freeman]

While generally a good article, I do wonder about a few points (below).  =
While glass may be added to bronze as a flux, I doubt lead or copper would =
be so used.  We all know that forged metal is not "frozen into shape."  =
And I wonder how cyanide can be produced form styrofoam burn out, when a =
necessary element (nitrogen) is missing from styrofoam.  Are the authors =
confusing other plastics with styrofoam?  Furthermore, do they MEAN to say =
that "...cyanide gas ...[is] not generally associated with acute disease...=
"  Cyanide  gas is generally associated with acute DEATH, or at least some =
nasty acute symptoms such as they describe for long-term exposure.  =
Cyanide is not cumulative in the body, so I don't know why they mention =
long-term exposure here.

But then I'm not an expert in such matters

Bruce
NJ

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

TECHNIQUES USED IN METALWORKING =20
   Foundry Casting =20
Lead, copper, or glass may be added to the brass or bronze as a flux. =20
   Blacksmithing =20
   Blacksmithing is done with inherently brittle forged tools. The hammer =
and anvil are both made from hot iron that is frozen into shape (forged). =
When struck together, they may shatter, producing shrapnel-like shards.=20
   MEDICAL DISEASES ASSOCIATED WITH  METALWORKING =20
   "Burnt out "Styrofoam will produce cyanide gas. Although not generally =
associated with acute disease, long-term exposure may lead to symptoms. =
The symptoms most commonly reported in long-term exposure are breathing =
difficulty, headache, dizziness, nausea or vomiting, a bitter or almond =
taste in the mouth, hoarseness, conjunctivitis, palpitations, chest pains, =
weight loss, weakness, sleep disturbances, and altered mental status.11 =
=20


>>> Phlip <phlip@99main.com> 03/22/02 12:54PM >>>
For anybody interested, I found this article entitled "Hazards Associated
with Metalworking by Artists".

http://www.sma.org/smj/97july1.htm=20

Phlip