preeta Posted June 4, 2016 Report Share Posted June 4, 2016 https://www.etsy.com/listing/217064736/coldstone-earthenware-pottery-slipware(lower in the page) what is the closest we have come to achieve that rich yellow orange colour without lead? ever since i saw one of michael cardew's slip ware in Pioneer Pottery a while ago i've been hooked. I went and looked at Winchcombe Pottery and they dont use that colour at all. actually not sure if they are still open or closed in 2012. that should tell me something. but then perhaps they didnt want an insipid replacement. and they dont seem to make slipware anymore. i am in the market for a honey glaze as close to honey galena as possible. Would be great if I could get a ^5/6 one electric one. hah!! actually i guess a nice yellow transparent glaze. i will admit i have not looked in any books yet. i have limited access to glaze recipes as all libraries here dont really stock glaze books. Is the colour also due to reduction? as honey galena. Link to comment Share on other sites More sharing options...
Pieter Mostert Posted June 4, 2016 Report Share Posted June 4, 2016 If you're looking for glaze recipes, have a look at Glazy, which is a free online database of ceramic recipes. Honey Amber looks reasonably close to the glaze in your link, but be aware that manganese dioxide has its own health and safety issues. Link to comment Share on other sites More sharing options...
preeta Posted June 5, 2016 Author Report Share Posted June 5, 2016 thank you so much Pieter. That is a fascinating site. gosh i am going to figure out what they all mean at the bottom. the graph and figures. oooh fun times ahead. Thank you for your suggestion of honey amber. i see that's the closest in transparent. sadly i am more attracted to the yellow in the honey galena glaze. i would even go with translucent. but i dont really see any there. i am, excited to add the website to my ever growing tool kit. Link to comment Share on other sites More sharing options...
Pieter Mostert Posted June 5, 2016 Report Share Posted June 5, 2016 If you're looking for a more yellow glaze, it might be easiest to use a stain. An example is Transparent - T8 Yellow, though it might not be quite what you're looking for. Perhaps Transparent - T5 Orange with less red stain would work. Whatever recipe you decide to use, you'll probably have to try a bunch of variations to get something you like using your kiln and on your clay body. Link to comment Share on other sites More sharing options...
preeta Posted June 5, 2016 Author Report Share Posted June 5, 2016 oooh thanks pieter that's more like it. so i could use a clear base and just try different stains for different colours! gives a uniform flat colour. sorta same principle as making slip. i already have a clear. thanks Link to comment Share on other sites More sharing options...
Sputty Posted June 5, 2016 Report Share Posted June 5, 2016 . Link to comment Share on other sites More sharing options...
Denice Posted June 5, 2016 Report Share Posted June 5, 2016 A potter posted some photos of a glaze that sounds like what your wanting on the forum Electric Cone 6 & Other Ways With Clay. His name is Filip Margodt, you have to join and pay a 10$ membership fee if you want to post. It is a good forum for people who work with C 5/6 oxidation firing. Denice Link to comment Share on other sites More sharing options...
PeterH Posted June 5, 2016 Report Share Posted June 5, 2016 ... Filip Margodt's pictures seem to be at: http://cone6pots.ning.com/profile/FilipMargodt Link to comment Share on other sites More sharing options...
Pieter Mostert Posted June 5, 2016 Report Share Posted June 5, 2016 oooh thanks pieter that's more like it. so i could use a clear base and just try different stains for different colours! gives a uniform flat colour. sorta same principle as making slip. i already have a clear. thanks Just make sure that whatever stain you use is compatible with your clear. For example, some stains require zinc-free glazes. Link to comment Share on other sites More sharing options...
preeta Posted June 6, 2016 Author Report Share Posted June 6, 2016 thanks Pieter. yes i will keep that in mind and look at the directions. Sputty i so hear what you are saying. i know Hannah McAndrew and Doug Fitch's work well. i happened to discover their wedding pot by accident and was hooked. by the way the debate is being reignited. thanks for the explanation of the claybody coming through. i wondered about it. i know Robin Hopper is working on glaze 'painting' on some sort of porcelain 'tile' and he is exploring lead glazes because he has never given up on the lead red glazes. i imagine if christmas light cords can have lead so can hopper on his non functional ceramic paintings. peter thanks for the link. Denice thanks for the site. more things to read Link to comment Share on other sites More sharing options...
Tim T Posted June 7, 2016 Report Share Posted June 7, 2016 Preeta, Lots of potters still use lead (at least in the UK - in the US people seem to be a bit paranoid about it). Even the chairman of the Craft Potter's Association, the UK body for professional potters, uses it and gives out the recipe on his courses. As well as the colour, you also get a much brighter gloss from the higher refractive index of the lead glaze. As in the recipe given above, use lead bisilicate instead of galena - lead bisilicate has the lead effectively encapsulated in glass so it doesn't leach out and there is minimal risk to you the potter. Galena, on the other hand, is not a good idea if you do a lot unless you have the full dust mask and air extraction system whenever any dust could be raised, and you wear gloves when handling the galena or glaze before it is fired. If not making anything that could hold food or drink, or applying to the outside of something that may be used for food or drink and clear of the rim of mugs, lead glazes are no more of a problem than any other glaze holding any of the toxic materials used by potters. If used on the inside of food or drink vessels then you do need to be cautious, research the topic properly if you have the knowledge of chemistry or use somebody else who does, and have the glazes tested - and never use copper in the glazes as it makes the much more prone to leaching lead. As an aside, lead glazes are still used extensively in commercially made tableware. The legislation on lead in the UK came about because about 400 potters a year were dying early from exposure when white lead was used - though they were glazing with it every day in a very exposed environment - in compensation the glazers were paid a bit more fr the privilege. In the US, the pottery industry fought tooth and nail against any legislation against the use of lead, saying the extra costs would destroy the industry (sound familiar?). Once they developed lead bisilicate and switched to that, lead poisoning to potters disappeared. They also tried different lead silicates, e.g. lead sesquisilicate is also available nowadays, but it is a bit more prone to leaching lead than the bisilicate. I've tried the same glaze recipe using red lead, lead bisilicate and sesquisilicate and they all came out the same. There is a faction that believes that lead should not be used on any account, and I'm awaiting their multiple damning emails, but if you are really that concerned about your health and safety, you are much more likely to die in a car accident than from using lead glazes, so you better sell your car first! Link to comment Share on other sites More sharing options...
Sputty Posted June 7, 2016 Report Share Posted June 7, 2016 . Link to comment Share on other sites More sharing options...
preeta Posted June 7, 2016 Author Report Share Posted June 7, 2016 hi tim. this is fascinating stuff. i had no idea about lead bisilicate or the use of it by english potters. i discovered the government attitude to lead when my infant tested positive (turned out to be nothing) and Uncle Sam was right on me in a friendly but an OMG way. that's when i learnt how much lead there actually is in commercial pottery. when i looked up the MSDS sheet i discovered LB is only for industrial or research use. when i tried seeing where i could buy it, got a lot of english sites and chinese of course. i read the hamer. i am a future potter. if i used lead it would be the death of my business. i am not going down the academic route so i cant see myself having access to research. but i dont see myself using Lead bisilicate ever. though if i had a chance i would for my personal research with no plans to sell the nonfunctional ware. makes me wonder if Canada has a generous attitude to lead, the reason why Robin Hopper is experimenting with it or plans to experiment with it. but this is a fascinating subject and i've learnt a lot here. now off to check the archives and see if there are other discussions on this matter. i wonder how many Mushmouths we will see emerge from Flint. so sad. Link to comment Share on other sites More sharing options...
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