LisaRudd Posted October 29, 2021 Report Share Posted October 29, 2021 L Plater! I’ve bisque fired stoneware pre-glazed with 06-6 cone underglaze. I’m going to glaze with cone 9 glaze and fire at cone 9. Have i stuffed up using a low cone underglaze or is it ok? Quote Link to comment Share on other sites More sharing options...
neilestrick Posted October 29, 2021 Report Share Posted October 29, 2021 It depends. Some colors will probably survive just fine, others will burn out, others will darken or change color. The glaze you're using could also affect the colors. You'll have to test to know for sure. Chilly 1 Quote Link to comment Share on other sites More sharing options...
LisaRudd Posted October 29, 2021 Author Report Share Posted October 29, 2021 Thanks for responding so quickly. Greatly appreciated. What do you think if I underglaze with the correct cone over the top of the bisqued cone 6 underglaze? Or should i just glaze and fire see what happens? I’m so bummed as I’ve created some great (for a beginner) pieces, and I’ve been so excited waiting to see the finished products. In fact I’ve spent every day for the past 2 months of lockdown creating these while waiting to get them fired after reopening. Quote Link to comment Share on other sites More sharing options...
Min Posted October 29, 2021 Report Share Posted October 29, 2021 40 minutes ago, LisaRudd said: What do you think if I underglaze with the correct cone over the top of the bisqued cone 6 underglaze? Or should i just glaze and fire see what happens? Pots such as your platter that are for functional use should be fired to the clays maturity. If you used a clay that matures at cone 9 then it's best to fire to that. If you have spend the past 2 months working on these pots I wouldn't rush things now just to get them fired. I know it can be a real temptation to get pots glazed but it can also be a big disappointment if things don't go according to plan. Do you by chance have a scrap pot or some test tiles made with the same clay? If you do I would strongly suggest to try out your underglazes on that with your cone 9 glaze and fired to cone 9. Even if you just have bisque fired test tiles or a scrap pot and don't want to re-bisque the underglazes on it's worth doing. If you find some of the underglazes burn off on your test piece(s) you could cover them with another layer of underglaze that you find doesn't burn off. Preferably testing this first too. Welcome to the forum. Quote Link to comment Share on other sites More sharing options...
LisaRudd Posted October 29, 2021 Author Report Share Posted October 29, 2021 Excellent! Ill try that! thankyou Quote Link to comment Share on other sites More sharing options...
Blue Grape Posted March 29, 2023 Report Share Posted March 29, 2023 How did they turn out? I have run out higher cone underglaze and will be using some cone 6 black underglaze now - but will fire it with transparent glaze at cone 8. Without testing first, what is the likely outcome? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.