Robin Hopper Only Firing Once to Cone 6 or higher?
Posted 09 June 2012 - 08:19 PM
I think I am confused. I was watching some Robin Hopper videos and I could swear he said that he only fires once - he doesn't bisque, then glaze, then fire hotter. Is this true, or did I mess up in my understanding of what he meant??? As an impatient person, I would love to be able to glaze greenware and then fire once!! Thanks for any help,
Northern Woods Pottery
Posted 09 June 2012 - 09:40 PM
Posted 10 June 2012 - 01:40 AM
Why not make a test and see if 'once fire' works for you? Make a test piece and glaze it and fire it. Just so you know at the outset greenware is 'chancy' dipping into glaze; if held in glaze too long it may get too soft and fall apart in the glaze vat. So brushing on glaze maybe best for your first try.
Remember to load the 'once fire' ware into the kiln like a glaze firing, fire slow like a bisque fire, and fire to the maturation temperature of the glaze.
Robin Hopper is a Master Potter and you don't get that way without testing. I am sure he has tried it all and has failed and succeeded over and over. The key is to test a technique and see if it works for you.
Posted 10 June 2012 - 08:39 AM
Posted 10 June 2012 - 08:56 AM
Posted 10 June 2012 - 08:57 AM
Posted 12 June 2012 - 04:26 PM
most of the work produced is sculpture, mostly large-scale, and some functional work. most of the time we are firing at ^04 oxidation, but also work at midrange ^5-6 ox/red and seldom at stoneware (for sculptures). 90% of the time, with our clay body, our glazes come out just fine - but there are some combos that don't quite work and result in less-desirable surfaces (or maybe not for personal aesthetic) which is why you should ALWAYS TEST. obviously, some things just won't work - like dipping a thin-walled pot in glaze; but you adapt and learn how to overcome.
single-firing is(was) a very common practice for ceramics and pottery for thousands of years. Also, just think of how much more fuel and time you're consuming if you have to fire the same object twice for the same result. But single and bisk/glaze firing both have their places, you just have to figure out which works in your situation and weigh the pros/cons of each. Whenever I test a glaze I always do one on bisque clay and one on greenware just so I know how each reacts.