cambriapottery Posted December 13, 2015 Report Share Posted December 13, 2015 Amaco underglaze velvets have been applied to a sculpture. The colours are vibrant after bisque cone 08. Now we want to apply a sheen with a clear glaze but we don't want to lose any of this initial vibrance. My test run on some items seem to have changed the colours drastically inspite of keeping the temperature low, below cone 07. Does anyone have a good recipe for low fire clear glaze over these underglazes without loss of colour? Link to comment Share on other sites More sharing options...
Benzine Posted December 13, 2015 Report Share Posted December 13, 2015 I use Amaco underglazes extensively, in my classrom. I have found that using Amaco's clear glaze, actually makes the underglazes MORE vivid. They are essentially made to be coated with clear. Some of them look bland without it. I fire to Cone 05, and have no issues with thr underglazes turning out dull. Link to comment Share on other sites More sharing options...
cambriapottery Posted December 13, 2015 Author Report Share Posted December 13, 2015 Thanks for this. Is there a particular number or info regarding this glaze from Amaco? Link to comment Share on other sites More sharing options...
PRankin Posted December 13, 2015 Report Share Posted December 13, 2015 Amaco LG-10 Clear Transparent Paul Link to comment Share on other sites More sharing options...
cambriapottery Posted December 13, 2015 Author Report Share Posted December 13, 2015 I suppose nobody has a from scratch recipe that will do the same as the ready made glaze from Amaco? Link to comment Share on other sites More sharing options...
cambriapottery Posted December 13, 2015 Author Report Share Posted December 13, 2015 Thanks for the detail on Amaco glaze, Paul Link to comment Share on other sites More sharing options...
oldlady Posted December 14, 2015 Report Share Posted December 14, 2015 after printing out this recipe, i realized that you want to fire at a much lower temperature. sorry, do not know one for that low. for anyone who uses velvets and fires to cone 6, this clear will not change colors because it does not have zinc in it. Glossy clear, no zinc cone 6 kona f4 35 gerstley borate 23 silica 18 barium carb. 8 whiting 8 EPK 8 Link to comment Share on other sites More sharing options...
GiselleNo5 Posted December 14, 2015 Report Share Posted December 14, 2015 If it's the zinc that is changing the colors, perhaps someone has a low-fire zinc-free recipe? Link to comment Share on other sites More sharing options...
Cavy Fire Studios Posted December 14, 2015 Report Share Posted December 14, 2015 Yeeeeah, thing with Velvets is that they are designed specifically to not form a solid line. That's perfectly okay, if you're looking for a softer application (works GREAT for fur, and also shading wash, when watered down), but if you're looking for BOLD, BRIGHT color, I cannot speak more highly of Clay Art Center of Tacoma's underglazes. They are so bold, it's almost like Copic or Prismacolor professional markers. I've dedicated my whole ceramic career to finding a perfect underglaze combination for my technique, and if you have ANY underglaze questions, this rodent lady is aaaall guinea pig ears! This dragon was outlined in CACT's Baltic Black A and shaded with Amaco's Velvet black (varying UG:water ratios). And... my clear has a buncha zinc. >.< It eats purples pretty bad. Has flint, EPK, and gerstley borate... Link to comment Share on other sites More sharing options...
Callie Beller Diesel Posted December 15, 2015 Report Share Posted December 15, 2015 If it's the zinc that is changing the colors, perhaps someone has a low-fire zinc-free recipe? http://digitalfire.com/4sight/education/g1214m_cone_5-7_20x5_glossy_base_glaze_114.html If this doesn't keep you out of trouble, nothing will I don't know how widespread this stuff is, but I'm going to shamelessly name drop and say that Sarah Pike turned me on to it. (She used it to teach classes, not on her own work.) My local arts centre is currently testing it as well, and it is really user friendly and very colour responsive. I'm beginning my own rounds of testing next week. http://plainsmanclays.com/ravenscrag/index.php Link to comment Share on other sites More sharing options...
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