celica Posted August 1, 2020 Report Share Posted August 1, 2020 Is manganese oxide the right stuff to use to wipe on and off sculptures to give them character? Link to comment Share on other sites More sharing options...
Sorcery Posted August 1, 2020 Report Share Posted August 1, 2020 You probably could, but I reckon Iron is less dangerous. It may be the other Manganese I'm thing of though! Lol! Reckon Iron is cheaper though. Sorce Link to comment Share on other sites More sharing options...
Pres Posted August 1, 2020 Report Share Posted August 1, 2020 Iron oxide, is one of the best and cheapest wash materials out there. You may want to mix up a wash using 25% OM4, 25% Nepheline Syenite, and 50% of iron, cobalt, copper, chromium, rutile, or manganese. I will often play around with combinations to use to get a wider range of color. These can also be used over glaze as a calligraphic brushing material. AS always testing is needed to determine consistency, I usually mix mine to thin no fat milk. best, Pres Link to comment Share on other sites More sharing options...
CactusPots Posted August 1, 2020 Report Share Posted August 1, 2020 Will the Neph Sy add gloss when the wash is pooled up in deep texture? I make my iron wash without a recipe, just adding a little of this and a little of that. No fluxes, but I do like the addition of magma. Link to comment Share on other sites More sharing options...
Sorcery Posted August 1, 2020 Report Share Posted August 1, 2020 You may also have an allergy to one over another. Which could mean gloves or no gloves. I hate gloves! Sorce Link to comment Share on other sites More sharing options...
Pres Posted August 1, 2020 Report Share Posted August 1, 2020 Even though the Nepheline Syenite is a flux, it will not affect the wash. the two materials five a little more body, and they work well on unglazed and glazed pieces. If unsure, test. best, Pres Link to comment Share on other sites More sharing options...
liambesaw Posted August 1, 2020 Report Share Posted August 1, 2020 Neph sy doesn't melt until cone 9, so if high firing be mindful Link to comment Share on other sites More sharing options...
CactusPots Posted August 1, 2020 Report Share Posted August 1, 2020 2 hours ago, Sorcery said: You may also have an allergy to one over another. Which could mean gloves or no gloves. I hate gloves! Sorce Everyone who works for that company should be required to say it that way. Maybe even get Dr Evil to record the auto greeting. Choice. Link to comment Share on other sites More sharing options...
Benzine Posted August 2, 2020 Report Share Posted August 2, 2020 On 8/1/2020 at 10:57 AM, Sorcery said: You may also have an allergy to one over another. Which could mean gloves or no gloves. I hate gloves! In my college course, I heard how a well known ceramicist died of manganese poisoning. Not long after, I wanted to use some manganese as a stain. I used the plastic gloves provided when applying removing the stain. After I was done, I took the gloves off and found parts of my hands coated in the watered down manganese stain. The gloves were apparently not the best quality... Link to comment Share on other sites More sharing options...
Min Posted August 2, 2020 Report Share Posted August 2, 2020 @Benzine, it's the inhalation of fumes thats the real health risk with manganese. Inorganic manganese isn't absorbed through the skin. (I'm not advocating not wearing gloves while working with chemicals.) Here and here are a couple links with safety info re potential health effects. Link to comment Share on other sites More sharing options...
Benzine Posted August 3, 2020 Report Share Posted August 3, 2020 17 hours ago, Min said: @Benzine, it's the inhalation of fumes thats the real health risk with manganese. Inorganic manganese isn't absorbed through the skin. (I'm not advocating not wearing gloves while working with chemicals.) Here and here are a couple links with safety info re potential health effects. I wasn't terribly worried, especially since it was a limited, one time exposure. I just found the timing of me hearing the story and myself getting some on me, to be a fun coincidence. Link to comment Share on other sites More sharing options...
neilestrick Posted August 3, 2020 Report Share Posted August 3, 2020 It was thought that both Hans Coper and David Shaner suffered from the effects of manganese poisoning, however I don't think that there was ever confirmation on either. Link to comment Share on other sites More sharing options...
Babs Posted August 3, 2020 Report Share Posted August 3, 2020 Poor Hans was mixing glazez for and firing Lucy Rie's beautiful pots a lot of which looked deadly..... Straw and Camel's back scenario maybe Link to comment Share on other sites More sharing options...
neilestrick Posted August 3, 2020 Report Share Posted August 3, 2020 31 minutes ago, Babs said: Poor Hans was mixing glazez for and firing Lucy Rie's beautiful pots a lot of which looked deadly..... Straw and Camel's back scenario maybe His own work was covered in manganese, too. Link to comment Share on other sites More sharing options...
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