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Member Since 08 Sep 2010
Offline Last Active Nov 20 2015 01:51 AM

Posts I've Made

In Topic: Is Decal/transfer Paper Could Be Fired With Gas Kiln?

20 November 2015 - 01:51 AM

There is no reason why you shouldn't fire decals in a gas kiln.  The main thing is to have a very slow temperature rise to 400-450.C so that all the combustibles can burn out.  At all times keep the kiln in an oxidizing atmosphere to 800.c.  You need to keep a clean atmosphere so even over-oxidiziing is advisable.  For many years I fired both lustres and decals in my gas kiln very successfully.



In Topic: Duncan Gold Luster Question

12 November 2015 - 09:17 PM

You may find that lustre on stoneware fires better at the higher end of the lustre firing 800-820.C.    If you come across any books on lustre you will find that different firing temperatures are given for different categories of glazes.  These categories are usually glass, earthenware, soft paste porcelain, hard paste porcelain.  Stoneware falls within the hard paste porcelain range of firing temperatures whereas cone 6 glazes would fall within top end of soft paste porcelain.  Lustre relies on bismuth oxide to flux or bind to the surface of the glaze.



In Topic: is gilding / gold leafing food safe ?

12 November 2015 - 12:02 AM

The best way to remove purple spots is with a gold eraser.

In Topic: Duncan Gold Luster Question

11 November 2015 - 10:49 PM

It doesn't matter what brand of gold or lustre you are using you should not be present in the same space as the kiln when you are firing these.   The toxicity of gold fumes is present till at least 450.C.  You will notice that is when the smell also disappears.   


You should never work in the same space as a kiln  when it is being fired.   Fumes are being emitted all the time.   

In Topic: Silver Lustre

11 November 2015 - 10:29 PM

Silver lustre tarnishes.   Nowadays industry uses platinum lustre instead as it does not tarnish.