Technical Question About Firescale

Don you said in your posting a few days ago on this topic that:

Prip's flux, in whatever iteration you use it...whether you make
your own or purchase the commercial variety, is essential 

I have checked in my Rio catalogue and they don’t have anything
called Prips Flux for sale but Stop-Ox II Antifirescale Coating and
Cupronil Antifirescale Coating.

Do you know which is most akin to Prips? I use a Hoke oxygen/propane
torch.

Thanks for your help.

Regards,

Sarah
Botswana
@Designconsultancy

I have been using puchased Prips Flux for years. My current source
is Allcraft in NY (800) 645-7124. Ask for Tevel.

Grace S.

Hi Sarah,

I have never used Prip’s or Stop Ox, but use Cupronil. I manufacture
and distribute Cupronil.

It’s makeup is slightly different from Prip’s flux. Because of that
I believe it is a better flux. Cupronil has been on the market since
1974 and may be the original stop firescale flux. Stop Ox came along
many years after Cupronil.

Firescale is the scourge of all silversmiths and must be eliminated.
You must use an anti-firescale flux, no matter which one you choose.

Good Luck,
Hope to meet many of you at the Orchid Dinner,
Lee Epperson

Sarah,

I have checked in my Rio catalogue and they don't have anything
called Prips Flux for sale but Stop-Ox II Antifirescale Coating
and Cupronil Antifirescale Coating. 

If I had to choose between the two Rio has, I would use Stop-Ox. I
have used both and find Cupronil lacking for some reason I don’t
understand. However, if you go to www.gravescompany.com, you will
find the catalog and “we” carry Prip’s flux produced by Griffith in 4
and 8 oz jars. Its what I use in my personal shop, though at the
school where I teach, I make up my own Prip’s flux because we use it
in quantity. Disclosure: I work at Graves part time.

Cheers, from Don at The Charles Belle Studio in SOFL where simple
elegance IS fine jewelry! @coralnut2

Hi Sarah,

Both Stop-Ox II Antifirescale Coating and Cupronil Antifirescale
Coating work well. The commercially made Prip’s Flux is made by
Griffith. Many companies distribute Griffith products, including
Allcraft.

Cynthia Eid

I use Easiflo flux powder. It stands up to soldering temperatures
well, may be reapplied several times (during prolonged soldering
jobs) without cooling the workpiece down at all, and I rarely get
firescale, It’s readily available worldwide at welding and plumbing
suppliers.

Brian

B r i a n A d a m
e y e g l a s s e s j e w e l l e r y
Auckland NEW ZEALAND
www.adam.co.nz

Thanks for all the advice about manufactured Prips, Stop-Ox and
Cupronil. This forum is truly a wonderful resource, especially for
those of us that live in the bush!

Regards,
Sarah
Botswana
@Designconsultancy