Easy Glaze Testing Part 3: INGREDIENT BLEND (video 33 of FREE online glaze course)

Here is a short video explaining how I find variations on a glaze. You can make 39 variations in about 3 hours.
There is an error in something I said at 14:24 - 15:01. I accidently swapped the spodumene for all of the feldspar so it made the range very high. So it was not as high as 0.34 - 0.66 and the spodumene point should not be as high on the Stull chart.

[@brandonguthrie4924]

You're a treasure, John! Keep fighting the good fight!

[@joelhiggins6156]

Thank you John! Your book inspired me to start mixing my own glazes!

[@deathbydarwin1985]

Brilliant John! I wish your course this summer in BC wasn't full up already, i'd be there in a heartbeat. Thanks for providing so much great information!

[@kevinh5024]

I am always excited to see videos your posts. Never fails to inspire me. Thanks John!!

[@solena1351]

Nice to see you back

[@johnbrittpottery]

Got 2 more coming in a week or so.

[@DisVietVetUSA]

Thank you John you really are punching the buttons on glaze formulation better than on those who just do glaze theory. I am now putting this the the Ceramic Materials discussion page at my college (College of Marin) Kentfield, Ca.

[@johnbrittpottery]

Just doing my best to stay alive.

[@SirenaAzulejaCeramica]

Thank you very much

[@fredcurrie]

Thank you John! I enjoy your videos and your books. Your layout on the table is very helpful. It looks like these tiles were all fired cone 6 E1 right?

[@johnbrittpottery]

Yes..thx

[@marcellodolcini]

Hello John, Thanks! For the first test tiles form Selsor Chun, did you take away from the original recipe colorants and opacifiers( tin oxide and RIO) before adding the new colorants? Or you added the new colorants on the original glaze including original tin and RIO? Thank you

[@johnbrittpottery]

Stripped the base of colorants and opacifiers. Then add the colorants.