Harry Potter Posted September 29, 2015 Report Share Posted September 29, 2015 Spectrum 911 stardust kept in studio, never frozen, tight lid, still lost a lot of the water in mixture. I reconstituted with water and blended with an immersion blender. Got a good consistency and proceeded to glaze a couple of pots. I first layered Spectrum 909 / 2 light coats drying in between. Then one coat of 911-reconstituted. Once dry the 911 flaked off. See Photo. I emailed spectrum but got no real answers. Just advice on keeping bacteria out of glaze and not dipping brush into glaze bottle. which I don't do. Any thoughts, ideas on cause? Link to comment Share on other sites More sharing options...
neilestrick Posted September 29, 2015 Report Share Posted September 29, 2015 Does the glaze still brush well, or does it dry very quickly and go on unevenly? Link to comment Share on other sites More sharing options...
Harry Potter Posted September 29, 2015 Author Report Share Posted September 29, 2015 Goes on evenly and easily. Dries normally. Link to comment Share on other sites More sharing options...
Min Posted September 29, 2015 Report Share Posted September 29, 2015 Harry Potter, this looks a lot like what happened to another forum member a while back with Spectrum glaze. Check this thread: http://community.ceramicartsdaily.org/topic/7012-spectrum-glaze-problem/?hl=%2Bspectrum+%2Bglaze+%2Bflaking&do=findComment&comment=72022 Post #20 has a reply from a fellow named Joseph @ Spectrum that might work. Link to comment Share on other sites More sharing options...
neilestrick Posted September 30, 2015 Report Share Posted September 30, 2015 You can make your own gum solution by adding 2 tablespoons CMC Gum to a gallon of water. Let it sit overnight and blend. Add a pinch of copper carbonate as a preservative. For a brushing glaze you can use this gum solution as 1/3-1/2 of the total water. For adding it to an existing glaze you may want to make it a bit thicker, like 3 tablespoons per gallon, so you're not adding too much water to the mix. Link to comment Share on other sites More sharing options...
Harry Potter Posted October 1, 2015 Author Report Share Posted October 1, 2015 Thanks for all the input. I'm still having problems with other Spectrum glazes and realized that I experienced same problems in 2012. Wrote the company and got a similar response as to bacteria. I bought all spectrum glazes at the same time in 2012, about 30 pints. My studio temps are 40 coldest and about 98 hottest. Yesterday the flaking was from a jar never opened. It did have to be reconstituted with water and half teaspoon of suspender (spectrum brand). Flaked off after dry. I did read thread from "mossyrock" and very similar problems. Anyone got a good source for low fire glaze recipes that will run and blend? I had just as soon make my own. Make my own raku glazes now. Thanks to all. Link to comment Share on other sites More sharing options...
neilestrick Posted October 1, 2015 Report Share Posted October 1, 2015 A good basic low fire clear is 90% Frit 3124, 10% Kaolin. It's a good starting point. You can opacify it with 10% zircopax/superpax, and add stains and oxides for color. Using combinations of opaque and transparent glazes will give nice effects. If you want to brush the glaze, use the gum solution I mentioned before for 1/3-1/2 of the water when mixing the glaze. 1% VeeGum-T will also help with brushability. Link to comment Share on other sites More sharing options...
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