Oh gosh 💔 What a loss for you guys. Many belated condolences from Copenhagen. Odd perhaps, but I feel genuinely very sad to learn that Phil has passed. He seems to have been a real gem of a person. Indeed, how lucky we are to still be able to watch him give lectures here.
I am a production potter mostly stone ware clay body. I Use a Torch on most of my pieces on the wheel I do not use bats. I don't get S cracks because compression, compression, compression! Loved the video!
Thank you for watching and be sure to subscribe so you get notified for every new update! It's a really good idea to listen to the podcast after watching the video to help 'vitrify' the lesson in your mind! I really hope you enjoy the videos and please tell your friends and fellow artists!
Well Temily, we are happy that you are enjoying the videos! We really enjoy making them. We plan to release two every week until we run out of topics. If you have any ideas, let us know. And if you want to be a partner in creating this digital library, consider becoming a patron. Just go to www.patreon.com and search for The Potters Round Table.
Uneven drying can cause S-cracks, so when I have a piece with a thick bottom and thin sides because I want to trim a higher foot, I just hit only the bottom with a blowtorch for a moment. I give it a head start in drying.
Thanks for another great lecture! All the drawings and examples you give are great. It is the best source to understand science of the ceramics that is too often called magic. ;) I have a question about other pottery myth (or maybe it is not a myth). I've heard that many times and was curious what is your opinion on that. Some potters advice on errors with glazes is to run an empty kiln with higher temp then your glaze firings, to get rid of rest of other oxides and glaze ingredients that may be left in the kiln. I don't understand that idea. Could please share your opinion on that if its true and explain.
Hi Ania, Thanks for watching our videos and for your question! I don't believe that, in general, there is any problem with glaze ingredients remaining in a kiln. Most of the ingredients that are used in glazes do not "evaporate'' or turn into gas to any significant amount when they are heated, so there is no residue that is left in a kiln.The only common exceptions to this might be soda ash (sodium carbonate) or salt (sodium chloride). When these are present in a kiln (either added to a gas or wood-fired kiln during a "soda" or salt firing, or as a glaze ingredient) that is fired to high temperatures, small amounts of these materials can remain in the kiln, and then become active again during the next firing. However, these "residues" don't really cause any problems with the glazes, in fact, they may actually enhance some of the glazes' appearance. Chemical impurities in clay are generally removed as gases during the bisque firings, and if not completely removed, then the removal is usually completed during the higher temperature glaze firings. Most common glaze problems and defects are due to other causes. Phil
Magic Water is used by many potters, especially when the pots are a little on the dry side. If the clay is leather hard, ordinary slip works well for me.
Thank you David. I've sent the question on to Phil and I will post his response. Did the potter paint the entire handle with wax? I just want to make sure I have the question right.
Phil is an amazing teacher! I love this channel, thanks so much for posting these videos ❤
Phil was an amazing teacher, he passed away last July! He will be missed but his legacy lives on in these videos.
Oh gosh 💔 What a loss for you guys. Many belated condolences from Copenhagen. Odd perhaps, but I feel genuinely very sad to learn that Phil has passed. He seems to have been a real gem of a person.
Indeed, how lucky we are to still be able to watch him give lectures here.
Thank you for the great information 🙏
You are most welcome, keep watching!
I am a production potter mostly stone ware clay body. I Use a Torch on most of my pieces on the wheel I do not use bats. I don't get S cracks because compression, compression, compression! Loved the video!
Yes, compression is the key. Thanks for watching and thanks for the encouragement!
Excellent - i've learnt so much from your lectures & podcasts.Thank you!
Thank you for watching and be sure to subscribe so you get notified for every new update! It's a really good idea to listen to the podcast after watching the video to help 'vitrify' the lesson in your mind! I really hope you enjoy the videos and please tell your friends and fellow artists!
I know Im kinda randomly asking but does anybody know of a good website to watch newly released tv shows online ?
I soo look forward to seeing these videos! Thanks so much!
Well Temily, we are happy that you are enjoying the videos! We really enjoy making them. We plan to release two every week until we run out of topics. If you have any ideas, let us know. And if you want to be a partner in creating this digital library, consider becoming a patron. Just go to www.patreon.com and search for The Potters Round Table.
Uneven drying can cause S-cracks, so when I have a piece with a thick bottom and thin sides because I want to trim a higher foot, I just hit only the bottom with a blowtorch for a moment. I give it a head start in drying.
I've not tried that approach, but it should work! Thanks for sharing!
Thanks for another great lecture! All the drawings and examples you give are great. It is the best source to understand science of the ceramics that is too often called magic. ;) I have a question about other pottery myth (or maybe it is not a myth). I've heard that many times and was curious what is your opinion on that. Some potters advice on errors with glazes is to run an empty kiln with higher temp then your glaze firings, to get rid of rest of other oxides and glaze ingredients that may be left in the kiln. I don't understand that idea. Could please share your opinion on that if its true and explain.
Hi Ania,
Thanks for watching our videos and for your question! I don't believe that, in general, there is any problem with glaze ingredients remaining in a kiln. Most of the ingredients that are used in glazes do not "evaporate'' or turn into gas to any significant amount when they are heated, so there is no residue that is left in a kiln.The only common exceptions to this might be soda ash (sodium carbonate) or salt (sodium chloride). When these are present in a kiln (either added to a gas or wood-fired kiln during a "soda" or salt firing, or as a glaze ingredient) that is fired to high temperatures, small amounts of these materials can remain in the kiln, and then become active again during the next firing. However, these "residues" don't really cause any problems with the glazes, in fact, they may actually enhance some of the glazes' appearance. Chemical impurities in clay are generally removed as gases during the bisque firings, and if not completely removed, then the removal is usually completed during the higher temperature glaze firings. Most common glaze problems and defects are due to other causes.
Phil
@@WashingtonStreetStudios Thank you for answering. :)
Hi, to join use "Magic Water": 1 gallon of water, 3 table spoons of liquid sodium silicate, 1 1/2 teaspoons of soda ash. Is this a better idea?
Magic Water is used by many potters, especially when the pots are a little on the dry side. If the clay is leather hard, ordinary slip works well for me.
I don't know if Phil ever wrote any books on glazes or pottery but if he did will someone please tell me where I can get them?
Sorry, Phil didn't finish his book before he passed. He did leave us the video series! I am so thankful that we finished!
I saw a video where the potter painted the entire mug handle along with the joints. Will water evaporate through the wax eventually before firing?
Thank you David. I've sent the question on to Phil and I will post his response. Did the potter paint the entire handle with wax? I just want to make sure I have the question right.
@@WashingtonStreetStudios Yes it was the entire handle.
With the vinegar, is it that vinegar won't evaporate ? maybee ?
Paul Hart, I wish I knew how to answer this question! Phil was the chemistry expert and he passed away last year in July.
Dennis
@@WashingtonStreetStudios Ah man, i'm genuinely sorry to hear that.