jgourlay - 1-6-2009 at 03:06
Gents, I'm posting this picture simply for the "gee whiz!" factor. This is the drain hole of a little furnace I use for melting this and that. Right
now it's firing a pot and is just causing the cone 6 cone to bend over.
What you're looking at is a soft billowy flame coming out of the drain hole. The drain hole is there in case a crucible breaks. At this point, the
drain hole is covered by a plinth so I'm guessing there is blow by. The clay is a Raku clay, and the source is propane.
The color you see is exactly right, and not a problem with the camera. Down below, you see a red glow. This is incandescence coming from the furnace
through the drain hole, ie the plinth bottom.
FrankRizzo - 1-6-2009 at 17:48
Neat! Must be some barium salts in the glaze of that Raku piece.
Elawr - 2-6-2009 at 21:46
Beautiful...
Please tell us more about your furnace! Is it of your own manufacture? It looks to made of some kind of castable refractory...can I ask what
composition you used?
jgourlay - 3-6-2009 at 02:57
Elawr: thanks! I'll answer your question this weekend when I have more time!
In the meantime: www.backyardmetalcasting.com --> 2 bucks furnace and Reil burner.