marianne kuiper milks on tue 13 dec 05
I have done this technique and had a lot of fun with it! I used a small pressurized air propellant, onto which I screwed a plastic bottle filled with F Chl.
If you spray it on lightly after it comes out of the kiln, it indeed puts almost a golden sheen on the ware.
I have also put soaking wet towels over the really hot pot straight out of the kiln, which creates a great crackle effect, black lines and then used F Cl.
Coloring horsehair made no difference that i could see. Still brownish/black.
What i did enjoy as well was to apply a light coloring, almost water-color with stain before firing, then spraying immediately after it was taken out of the (gas) kiln. Soft yet luminescent. Different, for a piece or two.
Allyson May wrote: I put color on my horsehair pots with Ferric chloride. This is sold at Radio Shack as PCB etchant. It is very nasty stuff so you should read all precautionary information and follow it!! Ferric can be painted on burnished bisqueware and then fired as you normally fire your horsehair pieces. An even coat in patterns or stripes is what you want. Heavy coat will produce a darker reddish color, lighter coat is more yellow orange. Kiln should be very well ventilated. I fire in a propane raku kiln outside. I wear a respirator when checking the temp or looking in the peeps. Remove the piece from the kiln and add the horsehair as usual. Ferric can also be sprayed on the hot piece after it is removed from the kiln. The hotter the piece the darker and more red the color of the ferric. The cooler the piece the more yellow the color of the Ferric. If you spray Ferric you must get away from all metals so the drift will not contact them. Ferric eats metal. Also
wear a respirator and cover all exposed skin and your eyes. The Ferric also gives the piece a very slight but beautiful iridescent sheen. This method of spraying can also be used over white crackle raku just before setting it in the reduction bin. Hope this helps.
Peace,
Allyson May
Stoney Creek Pottery
AMay4@msn.com
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