HenryBurlingame Posted July 23 Report Share Posted July 23 (edited) I have a bunch of new corelite kiln shelves I need to wash and was planning on doing a 50% aluminum hydrate, 25% EPK, 25% Glomax recipe. But since I am starting fresh I was wondering if there was anything better out there. I hear some good things about zircon based washes and was wondering if anyone here has experience with them and if they like/dislike them compared to something like the more standard recipe I was planning on. Thanks! Edited July 23 by HenryBurlingame Quote Link to comment Share on other sites More sharing options...
PeterH Posted July 23 Report Share Posted July 23 Old threads on ITC HenryBurlingame and Kelly in AK 2 Quote Link to comment Share on other sites More sharing options...
Russ Posted July 23 Report Share Posted July 23 https://insight-live.com/insight/share.php?z=K5hHzDs2Kr Ive been using this for several years now in a c10 wood kiln. Way better than traditional kaolin alumina. HenryBurlingame 1 Quote Link to comment Share on other sites More sharing options...
HenryBurlingame Posted July 23 Author Report Share Posted July 23 (edited) Double post Edited July 23 by HenryBurlingame Quote Link to comment Share on other sites More sharing options...
HenryBurlingame Posted July 23 Author Report Share Posted July 23 (edited) 1 hour ago, Russ said: https://insight-live.com/insight/share.php?z=K5hHzDs2Kr Ive been using this for several years now in a c10 wood kiln. Way better than traditional kaolin alumina. That’s the exact recipe I was thinking about too. I’m trying to decide between that and the alumina/epk/calcined epk recipe I posted above. I won’t be doing any wood firing with them, just electric up to cone 10. But whatever wash is going to give me the best performance/ least hassle is what I’m shooting for :-). Edited July 23 by HenryBurlingame Quote Link to comment Share on other sites More sharing options...
Kelly in AK Posted July 24 Report Share Posted July 24 (edited) I can’t directly address your question, but have some information that may be helpful. I have a little bit of experience with zircon kiln wash, but haven’t used it much as just plain kiln wash. That is, I came into possession of a bunch of zircopax by virtue of buying someone’s raw material supply when they retired. There was no alumina in the lot. I built a soda/wood kiln with mostly soft brick from cast off electric kilns. I dipped the hot face of these in a wash of roughly 70/30 zircopax/kaolin. I’ve done that for the following two rebuilds of the kiln (new brick, k-26, and now the walls are lined with thin kiln shelves). No coating I know of will keep the bricks from spalling, but this one does extend their life. I extrapolate that from how quickly soda decimates places where the coating has come off. It doesn’t flake or peel easily and fires harder than kaolin/alumina wash. Since I had no alumina I also used zircopax/kaolin for wadding and shelf wash the first couple firings. The wash was fine. Wads not so much. They were very hard and not easy to get off the pots. I wouldn’t do it again. It really showed me how different an animal zircon is from alumina. This is at cone 6-7. I use a mix of 60/40 alumina/kaolin now for shelf wash. Silicon carbide shelves. It doesn’t curl or flake, but I put it on thin and scrape the shelves every firing so it never builds up. For wadding it’s the same but I add some flour to make it easier to shape. Edited July 24 by Kelly in AK Clarity HenryBurlingame and Hulk 2 Quote Link to comment Share on other sites More sharing options...
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