New Creative Bronze and Copper Clay

[Obsidian Butterfly]

wow 20 minutes????? my arms would be dead by then! let me know how u get on with the creative copper instead. i didn't get on with the artclay copper at all.

[Dennis]

For such prolonged firing it would be increasingly important to have assisted ventilation, because a lot of toxic gases can accumulate in that time. Dennis.

[mizgeorge]

I wouldn't be at all happy using a microtorch for that sort of time, as the casing could very easily overheat to the point where it could become hazardous.

[pmcdesigns]

It is sensible to know about your torch - many are made to withstand firing at up to 1300C for long periods of time. You do have make sure that the micro torch is held at a 45% angle all the times because heat rises. Additionally I would not advise anyone that is not very experienced in torch firing to fire copper clay for that length of time - just incase, as the heat needed is quite high compared to silver clay.
I can only say that is how long I had to fire to achieve the required result with a torch (and it was in a well ventilated room).

[lorraineflee]

Before I got my kiln I used to fire PMC with a small camping stove and a mesh rack. Establish the hottest point by preheating and then place the item to be fired there.

Lorraine

[Julia Rai]

The Creative Copper and Bronze clay are the same as Prometheus Bronze and Copper clay made in Turkey. They suggest 5-10 minutes with a torch is sufficient for firing. They have a video tutorial on the firing page on the Prometheus website.
Best wishes,
Julia