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Showing results for tags 'nichrome'.
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Hi, can anybody suggest where might sell or manufacture bead rods that go to cone6/7. Currently using bead rods you find commercially, usually made of nichrome and so when reaching temps of over 1200 they tend to start sagging and releasing green/black deposits into the kiln - usually I have kiln shelves covered in black soot by the end of a firing. I use kanthal wire which has solved a green deposit problem I had on the clay when using nichrome, but for the life of me can't find anywhere to replace the kiln rods with higher firing ones! I'm UK based.
I use nichrome wire hooks to hang decorations no larger than half the size of the palm of your hand and no thicker than 5mm, though often a lot smaller and a lot thinner. I've been using hooks as the decorations are fairly heavy and so I use thick bead rods - too thick to thread directly through the holes made in the clay. (If anybody could suggest a better method I'm open to making my life easier, bending 100 pieces of wire and hanging takes a lifetime!) The wire itself is sturdy and doesn't slump, however I use a white stoneware body, decorated and transparently glazed. After a stoneware glaze firing (I glaze to 1250) I have what I can only describe as green burn marks above the area where I've cut the hole, right where the wire sits, though the wire does not touch the piece. I thought it might be the wire getting old, it can become quite black and brittle after several firings. However after replacing it with new wire I have the same problem on the first firing. I can't remember it being a problem I've always had, and I've tried several different clays recently in a sampling run - it's happened with all of them, so just trying to rule things out. It's ruining what would otherwise be completely saleable work and I'm totally confused! I really hope I'm missing something obvious here; can anybody shed some light please!?