[Jewelry making - Article 00946] - [Orchid] Soldering hearths

[John Burgess]

========[ Invite a Friend - http://www.ganoksin.com/invite.htm  ]========


    G'day.   I doubt whether many ordinary brickyards  would have the
    kind of soft insulating bricks which will hold pins.  For that type
    you need a brick maker that specializes in  furnace insulating
    bricks.   These are placed behind the high temperature inner furnace
    bricks.   They are much lighter, being very porous and they are
    softer - can be scraped clean..   I am very lucky being in New
    Zealand, where there has been much volcanic activity in the past and
    in fact there still are several active volcanos.   One of these
    volcanoes chuffed out what geologists call acidic larva, which is
    mainly silica pumice, and, which, when it left the volcano was a
    very nasty red hot  cloud called a 'neu=E8 ardente' We can still find
    decent sized lumps of it on a few sea shores, where it washes up
    because it floats on water, which is what I use very satisfactorily.
    You can use barbecue charcoal, but it is very messy and friable, and
    is difficult to find a bit with a flat enough surface. Some shops,
    especially pharmacies sell pieces of pumice used when showering or
    bathing to rub away calluses on hands and feet. 

-- 
Cheers for now,
John Burgess;   johnb AT ts.co.nz of Mapua, Nelson NZ


____________________________________________________________________
T h e   O r c h i d   L i s t
Open Electronic Forum for Jewelry Manufacturing Methods and Procedures
____________________________________________________________________
Orchid FAQ:
~ http://www.ganoksin.com/orchid/faq.htm
Orchid Archives:
~ http://www.ganoksin.com/orchid/archive
Orchid Galleries:
~ http://www.ganoksin.com/orchid/gallery.htm
Invite a Friend:
~ http://www.ganoksin.com/invite.htm
____________________________________________________________________
Tips From The Jeweler's Bench - Article Archive
~ http://www.ganoksin.com/borisat/tip_sear.htm
The Jeweler's Selected Bibliography List
~ http://www.ganoksin.com/jewelry-books
Buy Orchid Jewelry:
~ http://www.ganoksin.com/shop
____________________________________________________________________
-Unsubscribe:
-Email: orchid-request AT ganoksin.com Body=unsubscribe subject=blank
____________________________________________________________________