Acquiring and Processing Ceramic Raw Materials (Video #25 in the Free Online Glaze Course)

[@marcisaacs9407]

Thank you John this is awesome

[@JHEUFMFPEHRRSEOYN]

John I just discovered this course after looking into other courses and not being able to pay the money, thank you so very much for this resource. I will be sharing this with every potter I know. Free education is such a blessing.

[@johnbrittpottery]

Spread the word. A self directed course requires a bit of commitment but if you do the testing that is the best way to learn. Adding more everyday! Plus if you go on to the Facebook group.... Exploring Midrange Glazes Together with John Britt's Book... you can ask questions of that group which is very helpful. 15,000 people helping.

[@dccreations1361]

Pretty cool stuff John, thanks for sharing!! I've been wanting to dabble in some topics like this, this was a great starter for me to get me started.

[@caleb5986]

Thank you!

[@joaocarlosmatiolaguedes1046]

Thank you so much for this.. I am learning English by business travel and this content helped me a lot..

[@Zero-quantum]

Thanks a lot! Was very informative 👍👍👍

[@deepashtray5605]

You could do a whole series just on notes, journals, recipes and keeping track of all those different materials. Note: diatomaceous earth has a warning label about using it indoors, nasty dust issue... it's actually used as an insecticide, the fine dust grains dig into the exoskeleton of the bugs and kills them.

[@paulauksztulewicz7381]

Also used as pool filtration medium.

[@rehoboth_farm]

@@paulauksztulewicz7381 And they put it in toothpaste.

[@jenniferassinck803]

I harvest my local version of Albany. I have no cracking problems with mine. You may not need to calcine your version of Albany. Although Tony Hansen recommends roasting Alfred, it is a composite they put together and may include an ingredient with larger particles than the original Albany or other illites.

[@DirtyBottomsPottery]

Owen Wilson, "Wow." But seriously, I have gone into businesses, and asked about how I can get my hands on certain materials like straw or rice ash and people look at me like I have three heads. There are no experts in my area, or businesses that specialize in glaze/clay materials. The best I found was a crotchety, stuttering fool who collected minerals, and had a chip on his shoulder the size of Delaware. It's really frustrating to try and do something like this without information about how to obtain the materials in the first place.

[@johnbrittpottery]

I feel your pain! Hope this helps.

[@DisVietVetUSA]

Horsetail fern is good source of plant silica

[@daxgaz]

Great stuff! If I could request some information on the UMF of clay bodies. I've been looking everywhere and have not found much information. I fire cone 6, but I am curious about various temperature clays.

[@johnbrittpottery]

You can look on Glazy. I really don't know much about UMF of bodies. I just use recipe method. I would find recipes and put them into glazy and try to find things.

[@ladendaisl888]

What size are the black lidded jars

[@nathanielhunter1280]

Thanks John! How much material do you collect at these road cuts and such. What is a good amount that would be efficient and easy to proccess?

[@johnbrittpottery]

5 gallon bucket is easy

[@carlosleon9580]

Hi John, I think there is a lot of pumice down here in mexico, what effect does it bring to a cone 9-10 glaze?

[@johnbrittpottery]

Like a dirty feldspar...so substitute in place of feldspar in a recipe. Also do a button/melt test.

[@carlosleon9580]

@@johnbrittpottery Thanks so much for sharing your knowledge! Will do those buttons!