I have used this recipe about 38 years ago. I found it in a Time-Life hobby book that had a pottery section. I did pottery for a few years, then put everything away. Got back to it just a few years ago. I found a bucket of dried red glaze. Added water to it, and it worked wonderfully. It is my go-to glaze because it is so stable. Red when it is thick, bluish when a bit thinner. I like that contrast on textured clay. I have always used RIO because it is so difficult to get anything red for cone 6. My kiln is ancient, just a kiln sitter on/off type. I love this recipe because it is a no-fuzz type; always works. It will be a very sad day when I will run out of Gerstley Borate. And, thank you, Donte, I have very much appreciated your videos. After a hiatus of over 30 years, I had to start from scratch - with everything! Being able to watch your videos and and learn from them was super helpful.
I'm obsessed with that tumbler (15:35) and your channel in general. I'm working on making my own "Donte's See Tumbler" knock off this very moment. It will suck, I'm sure, but we shall SEE. (see?). Thank for being so generous with your knowledge and teaching skills. Go River Cats.
Hi Dante, so, um, actually I want to ask about the dry powdered glaze company you tried last year, I think? I was a new thing and you were excited about it...?? Oh and, your bowl at the end, is Rad red! Plus, I love those copper sparkles in the tea cups...
Hi Donte, thanks for your video. I saw you updated glazy a few days ago. And now we have this! Please look at my picture attached to your temmoku gold recipe!
So... what I like about this is that I learned more here than from a tutorial on glaze making. I think the history of it helps make it all make sense. Does that make sense?
It makes total sense. I know him long-winded but it comes with the practice. Not many glaze makers talk about material change and I think it's an important part of glaze making.
@EarthNationCeramics I think the information is invaluable, so thank you. Here in Maine, we often have retired potters who offer up glaze supplies, and I've never understood which ones might be valuable. Dude, you rock. Love the overalls
The custer feldspar mine just shut down recently and is no longer available either. It was the only potassium feldspar left mined in north america. For glazes its not a huge problem as we can sub with frits pretty easily, but potash feldspar is important for clay bodies as sodium fledspars are slightly soluble and can cause issues. Wait for clay prices to go even higher than they have been...
I'm interested to hear more about your "conspiracy theory" about red and yellow iron oxides! I have a chemistry background and while unfortunately I don't have access to analytical equipment that can test your theory, I am so curious if you could explore this topic to see if it has any merit. Dr Google is telling me that red iron oxide is chemically Fe2O3, and yellow iron oxide is H3FeO3 (stop me if I'm misunderstanding). The oxidation states of the iron in each of these compounds are the same, but by weight red iron oxide would give you more "bang for your buck" in terms of iron content... But in this video we learned that different natural sources of compounds can yield different purities/compositions. I think this is what you're referring to, that common red iron oxide sources could be less "pure" than that of the yellow iron oxides. So I wonder* what a side-by-side glaze comparison of the two with synthetic red and yellow iron oxides would look like against natural counterparts, even just an oxide wash to remove any other variables. Great video! I love seeing two of my passions collide like this :)
I have some weird Mexican feldspar. I'm not using it. But you have to let me know a private way to give you my phone number. I may have some Kona also. I'll check it out. today
So, since we know the exact chemical composition of these ingredients... It's not possible to add some of those elements to a substitute and then sort of make atrificial whatever feltspar? I don't wanna sound smartypants, I get that if entire companies panic about this it's not possible, but ....i always thought chemistry scientist could often back engineer stuff if they had the chemical composition. Which clearly is a wrong assumption, but... How, why not!!! And also: you have friends all over the world and if you know of one of these ingredients being for sale in another country I'm sure a lot of people will happily send you a bag of white powder. Probably sold out everywhere but, well.