bciskepottery Posted July 11, 2015 Report Share Posted July 11, 2015 Am working on some sushi plates/trays for a salt firing (cone 10) and plan to stack them with wadding between plates. Would like to add some oxides to promote different flashing on the surfaces. I know about adding copper . . . but does anyone else have suggestions for additions to the wadding that would give a nice colorful halo effect? Am using Highwater's Phoenix and Standards Jack Troy Woodfire claybodies for the plates/trays. Link to comment Share on other sites More sharing options...
oldlady Posted July 11, 2015 Report Share Posted July 11, 2015 check with joyce michaud at Hood college in frederick. and mizue croswell in berryville. i have her number if you want it. do you want to do some seashells? Link to comment Share on other sites More sharing options...
bciskepottery Posted July 11, 2015 Author Report Share Posted July 11, 2015 I've got plenty of sea shells. Link to comment Share on other sites More sharing options...
Dick White Posted July 11, 2015 Report Share Posted July 11, 2015 I don't have any definitive experience with that, but what do you think would happen if you soaked the shells in a copper sulfate solution? Copper sulfate is a soluble salt of copper, unlike the usual ceramic colorants of copper oxide and carbonate. You can get it at agricultural supply stores (a fungicide) and sometimes plumbing supply stores (for breaking down roots in sewer lines). It comes as a blue crystalline powder and dissolves in water. Soak the shells in this and then let them dry. If you can't find any at your usual haunts, I have a tub of it and you can have some. dw Link to comment Share on other sites More sharing options...
jrgpots Posted July 11, 2015 Report Share Posted July 11, 2015 Look at Marcia Selsor's gallery here in the forum for her saggar fired pots. She has beautiful results flashing all kinds of oxides. She would be an ultimate resource. The late Paul Soldner did a lot of "flashing" in his studio. Of course that was a different time. Jed Link to comment Share on other sites More sharing options...
bciskepottery Posted July 11, 2015 Author Report Share Posted July 11, 2015 Dick and Jed, Thanks much. Re: Paul Soldner -- think he graduated from flashing to just plain "clothing optional". Link to comment Share on other sites More sharing options...
Babs Posted July 12, 2015 Report Share Posted July 12, 2015 Plain???or "plien d'air"? dans la studio Link to comment Share on other sites More sharing options...
Callie Beller Diesel Posted July 12, 2015 Report Share Posted July 12, 2015 Stacking and spacing, keeping flame path in mind are the keys to good flashing. Less salt is more, but you still have to get a little exposure. Pack loosely. I didn't work with a lot of oxides for flash, but adding chunky sawdust to your wadding and using Helmer kaolin slips gets results. I'm not familiar with either of those clay bodies you mention or their composition. I used to favour a porcelaineous mix that had about 5% Red Art added, and that did fun things, with reds and oranges and the odd pinks. And I think there should have been some sort of drinking game related to Paul Soldner showing up in various states of undress. Link to comment Share on other sites More sharing options...
Rae Reich Posted July 12, 2015 Report Share Posted July 12, 2015 I don't have any definitive experience with that, but what do you think would happen if you soaked the shells in a copper sulfate solution? Copper sulfate is a soluble salt of copper, unlike the usual ceramic colorants of copper oxide and carbonate. You can get it at agricultural supply stores (a fungicide) and sometimes plumbing supply stores (for breaking down roots in sewer lines). It comes as a blue crystalline powder and dissolves in water. Soak the shells in this and then let them dry. If you can't find any at your usual haunts, I have a tub of it and you can have some. dw Treasure your tub, Mr White. It's not available for roots anymore (environmental hazard, I think) although I haven't checked the feed store. That's CA, others' results may vary. Link to comment Share on other sites More sharing options...
Mark C. Posted July 18, 2015 Report Share Posted July 18, 2015 Helmer slip-its found in a few salt fire books. I use hemer a lot in the salt.great in wood kilns as well. Mark Link to comment Share on other sites More sharing options...
Denice Posted July 20, 2015 Report Share Posted July 20, 2015 I have never done any flashing but it sounded like a interesting topic. I have had encounters with Paul Soldner in the past but too X-rated to post. Denice Link to comment Share on other sites More sharing options...
Marcia Selsor Posted July 20, 2015 Report Share Posted July 20, 2015 Jed, Can't say I am an ultimate source on flashing. I am doing low fire work. There are sources for flashing slips. Ruthanne Tudball uses them in her soda firing. I agree with Mark, Helmers slip /clay is known for flashing. I think it is more common in the NW of US. Maybe check out Ruthann's book on soda firing for some recipes. Marcia Link to comment Share on other sites More sharing options...
jrgpots Posted July 20, 2015 Report Share Posted July 20, 2015 Jed,Can't say I am an ultimate source on flashing. I am doing low fire work. There are sources for flashing slips. Ruthanne Tudball uses them in her soda firing. I agree with Mark, Helmers slip /clay is known for flashing.I think it is more common in the NW of US.Maybe check out Ruthann's book on soda firing for some recipes.Marcia Sorry for misrepresenting you. Link to comment Share on other sites More sharing options...
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