Have heard that a copper penny will substitute for Magic

Cast. Was told the ratio was about 3/4 of a penny to one

ounce of gold. Does anyone know if this is true and if there

is a more accurate formula? Also, are there any other jewelry

forums, newsgroups, mailing lists available besides ArtMetal?

Gayle Morris Atlanta and Tucson

# Magic Cast substitute

**Gsmorris10**#1

`Have heard that a copper penny will substitute for Magic Cast. Was told the ratio was about 3/4 of a penny to one ounce of gold. Does anyone know if this is true and if there is a more accurate formula? Also, are there any other jewelry forums, newsgroups, mailing lists available besides ArtMetal? Gayle Morris Atlanta and Tucson`

I’m not sure what Magic Cast is. I do however know that zinc is burned

out of overworked 14K golds. Pennies made today are copper plated

zinc. Do you see some connection here?

= http://www.knight-hub.com/manmtndense/bhh3.htm e-mail:

@Bruce_Holmgrain snail mail: POB 7072, McLean, VA

22106-7972, U.S.A.

**morris10**#3

Orchidians…

Have heard that a copper penny will substitute for Magic Cast. Was

told the ratio was about 3/4 of a penny to one ounce of gold. Does

anyone know if this is true and if there is a more accurate formula?

Orchid Rocks!

Morris in Atlanta

**Red_Rodder**#4

`Have heard that a copper penny will substitute for Magic Cast. Was told the ratio was about 3/4 of a penny to one ounce of gold. Does anyone know if this is true and if there is a more accurate formula?`

I don’t know what Magic Cast is, but I would suspect that it is zinc.

The 14K yellow that I usually make contains 6.66% zinc. As remelting

this metal causes some of the zinc to evaporate off, eventually, my

yellow gold will start to turn pink and will begin to oxidize too

easily. I have gone to the length of bringing the metal to a white

heat to burn off the rest of the zinc, and then to replace the zinc

in the proper amount, but you may find this a little drastic.

Pennies made in the last 20 or so years are copper plated zinc. Your

formula is probably pretty close. Remember not to add so much zinc

as to lower the intended karat.

Bruce D. Holmgrain

http://www.goldwerx.com

@Red_Rodder

JA Certified Master Bench Jeweler / CAD/CAM Solutions

`Have heard that a copper penny will substitute for Magic Cast. Was told the ratio was about 3/4 of a penny to one ounce of gold. Does anyone know if this is true and if there is a more accurate formula?`

The magic cast product provided much better results than a

zinc/copper penny. Magic cast replenishes the gold with trace

elements that produce fire scale free castings, and also contains

elements that off-set undesirable contaminants such as solder. Try

both and you will see the difference!

James Gilbert

Stuller Metals

800-877-7777