I really appreciate you sharing this with the public. I'm an engineer so i have quite a bit of knowledge of material sciences and general/inorganic chemistry but im a complete amateur with pottery. The most I've done so far is refine clay from the dirt in my backyard but i started wondering about custom glaze recipes and realized i know nothing about the components of glazes. Pottery is such a wonderful intersection of art and science
Nice video, for the water portion you can make on the glaze on the thicker side, measure the specific gravity, and test diluting it with more water and test multiple test tiles to find the right specific gravity.
@@Rubzter2495 in-case you're still wondering, a proper glaze generally needs two sources of fluxes. on the periodic table, some of the elements we use for fluxes are under the 'alkali metals' column, and some fall under the 'alkaline earth metals' column. the ratio of these two types of metals in the glaze will determine the durability of the glass. If you only use alkali metals, you will have a glassy surface that is not durable (the metal oxides for colorants that can be harmful will leach out). alkaline earth metals help reduce the solubility and increase the durability of the glaze. When in proper ratio (30:70 for the most durable glass), your glass should not leach harmful colorants, and will be able to withstand your dishwasher.
I really appreciate you sharing this with the public. I'm an engineer so i have quite a bit of knowledge of material sciences and general/inorganic chemistry but im a complete amateur with pottery. The most I've done so far is refine clay from the dirt in my backyard but i started wondering about custom glaze recipes and realized i know nothing about the components of glazes. Pottery is such a wonderful intersection of art and science
Thanks for sharing this, so well explained, better than I could explain to my students!
This is really a super easy to understand introduction with no maths or nasty chemistry!
Great to learn some basics to get started. Very well explained.
Nice video, for the water portion you can make on the glaze on the thicker side, measure the specific gravity, and test diluting it with more water and test multiple test tiles to find the right specific gravity.
so good...love your class, intelligent questions and lots of fun
Very well explained
Thank you so much
Could you please recommend me abook in chemistry glaze for self study 🙏
Thanks! you are incridible teacher
Brilliant video and delivered well. Thank you for sharing 👍😊
Can I ask - why would you add two different fluxes? Why not just put one in and double the quantity?
@@Rubzter2495 in-case you're still wondering, a proper glaze generally needs two sources of fluxes. on the periodic table, some of the elements we use for fluxes are under the 'alkali metals' column, and some fall under the 'alkaline earth metals' column. the ratio of these two types of metals in the glaze will determine the durability of the glass. If you only use alkali metals, you will have a glassy surface that is not durable (the metal oxides for colorants that can be harmful will leach out). alkaline earth metals help reduce the solubility and increase the durability of the glaze. When in proper ratio (30:70 for the most durable glass), your glass should not leach harmful colorants, and will be able to withstand your dishwasher.
Fantastic instruction and explanations thank you!
Thank you for uploading this. I'm wondering if that base glaze recipe is for cone 6 oxidation or cone 10?
Great! Thanks for that!
Fabulous class, thankyou xx
What firing temp is this glaze recipe though?
i think its cone 6
I clicked 'like' after hearing 'the least amount of maths possible' at the beginning hehe :o)
9:40 recipe, earthenware needs more flux in the recipe
That immersion blender is whisper quiet. 😴
Sir How to calculate dry weight of a certain liter or Kg Glaze..
Tq
Basic instruction: missing the total grams to an amount of water or total material grams and water needed to make a pint, quart or gallon