Understanding Pottery: Chapter 6 Glaze Firing
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- เผยแพร่เมื่อ 21 ส.ค. 2024
- Thank you for watching our video describing what happens during a glaze firing.
Understanding Pottery is a video series in production by Washington Street Studios. The series is a digital textbook that will take the listener through the entire ceramic process from the raw material through the finished ceramic pieces. This is Chapter six: Glaze Firing.
We’ve already published:
• Chapter one: What is Clay
• Chapter two: Clay Properties and Drying
• Chapter three: Bisque Firing
• Chapter four: Tips for Successful Glazing
• Chapter five: Pyrometric Cones
In this video you will learn how heat work changes clay into multiple different ceramic products, what happens to glaze during the firing, how the glaze and clay materials interact and the different temperatures where these changes and interactions happen .
Show notes can be found at www.hfclay.com...
The next topic in the Understanding Pottery series will be ‘Basic Chemistry for Potters.’
The Potters’ Round Table is brought to you by Washington Street Studios, a community pottery studio, gallery and pottery school located in Harpers Ferry / Bolivar, WV. We exist to provide ceramic artists an affordable, fully equipped studio space for aspiring, emerging and established artists to share their creative energy and knowledge in an environment designed to support the ceramic artist. If you want to learn more about Washington Street Studios, visit our website at www.hfclay.com/.
At Washington Street Studios, we believe the sharing of creative energy and knowledge will improve the quality of our art and increase the appreciation of art within our community. We are striving to create an environment where the arts are shared and appreciated. We want to grow as a family of artists and contribute to our community. This podcast is one of our steps to share our passion for the ceramic arts, creative energy and knowledge with other artists and art lovers.
We also created a audio version to expand our audience. If you are looking for the podcast of our show search for the ‘The Potters Round Table’ on your podcast platform of choice.
I find these videos in the series very informative and clear to a novice. It is a 'no nonsense' communications. Thank you.
I hope you enjoy all the videos. Phil was a great resource for the ceramics community.
Love these lectures. Taking notes and re-listening !
Thank you
That's great Erman, we have a podcast as well if you want to listen on the go, just look for The Potters' Round Table on your favorite podcast platform.
Thank you for the comment and the encouragement!
So good!!! Man i learn so much from him without losing focus!
He was a great teacher!
I have loved every chapter so far and am looking forward to the next!
Great news! Be sure to share with your friends and fellow potters!
Thanks!! Really inspiring!!
Great instructional pottery videos
Thank you Laura, share the channel with your friends and fellow potters to help us build our community!
Excellent as always! We miss him so much! THANKS
Thanks for watching!
Great videos … finished building and fired my first gas kiln, did a bisque fire , earthenware and it went great, every piece looked great , before I found these videos , eight months ago , I did know the difference between greenware and bisque !!!!
Please post a picture of your kiln! And thank you for the encouragement.
Thank you I have learned so much and can’t get enough!
You are welcome Renee, be sure to share our channel with your friends and fellow potters! We are trying to grow the Potters' Round Table community.
Hi Rita,
Thank you for your email. Crazing happens at the end of a firing as the fired clay and solidified glaze are cooling down because the clay and the glaze are contracting different amounts. If the glaze tries to contract more than the clay, then it will crack and break apart into small areas - this is the crazing. As you are probably aware, most materials expand as they are heated and then contract as they cool back down, but different materials (different chemical compositions and crystalline forms) expand and contract at different rates (the CTE - coefficients of thermal expansion). So, if the glaze has a higher CTE (more expansion and contraction) than the clay, it is likely that crazing will occur.
Phil
Sorry, I posted Phil's response on the wrong comment! I'm too old and don't see as well as I used to.
Lots of great information. Thank you 🙏
Thank you for your encouragement! There are lots of videos and I hope you enjoy them all. Please share the channel with your friends and fellow potters.
Thanks for spreading Your knowledge further to us, You are doing amazing work.
Wish You all the best
Thank you for the encouragement! We have been so lucky that we recorded these videos from Phil before he passed. I hope it stays at his legacy for a very long time! Thanks for watching.
Super helpful! Thank you!
Thank you Thomas Leitner, I hope you enjoy all the videos and share the channel with your friends and fellow potters!
Thank you for these great informative series! Enjoying every video!
Anna, Thank you for your supportive comment! We appreciate everyone who watches our videos and we are very pleased that you find them useful! If you have a suggestion for a future topic, let us know!
Great lecture, thanks Phil 👍
Thank you, more on it's way!
Is it possible to do a lecture on crystalline glazes. I’m really interested I. The large crystal formations in a glaze. Love these lectures. Phil you are a genius. A master in your field. Thankyou so much for all the information.
Sinful Archer, I've talked with Phil, passed on your compliments, and confirmed that he will put together a lecture on Crystalline Glazes! it will take a couple months.
thank you for this content
Glad you enjoyed it Eric, Keep wathing!
Phil, you have inspired me to go back to doing bisque firing after having done 46 mostly successful single firings. Your talks have me looking back at when I started in 2017 and how I really didn't have as good a handle and understanding of the bisque process. I realize that I have been doing a bisque while single firing but being unable to inspect the pots after bisque I feel I am missing a wee bit of the fun.
I am using a 21 year old Euclid R-85 3cu.ft. kiln and a Paragon Q-11(for testing) and applying brush on glazes firing to ^ 5/6 on stoneware clay.
I would appreciate any advice if you have a particular schedule for your bisque and glaze firings.
I used your last schedule on the single firing I just did in the Euclid at the glaze came out well. I will do one more in the Paragon with the same clay body and glaze using your schedule adjustment just to see what the result is, then onto bisque firing again.
Cheers and Thank You...Freddie
Freddie, I'm going to forward this to Phil and I will post his response. This is way cool!
@@WashingtonStreetStudios No rush, I really appreciate the help and what Washington Street Studios does in sharing the knowledge.
Cheers and be well!
Phil mentioned doing a "hold" in his last video and then again in this video but he never explained how to do that. In my electric kiln, I wonder if I can do a hold if I just turn down the temp from high to medium and let it run at medium for the 20 minutes before I turn it off.
Holding is more difficult in a manual kiln, but you are correct, let it run at medium for 20 minutes. Another approach is to let it run at medium for 15 minutes, then high for 5 minutes to gain the heat lost then shut it down. Thanks for the question!
@@WashingtonStreetStudios Thanks for your quick response. I am watching this series a year after it was made so I didn't think I would see an answer from you. At most, I hoped I could get an answer from someone else who was also new to the series.
I think this channel can grow a lot, best pottery content knowledge on youtube
@@Etienne4201 They need to find a replacement for Phil. He died last month. What a wealth of knowledge that is now gone.
@@Etienne4201 Thanks for the encouragement!