Category: glaze testing

I Made Underglaze To-Go Kits!

This is what I have been doing in my studio as of late….making these super convenient underglaze To-GO Kits like crazy!

This simple and easy-to-use underglaze storage box idea came from a video I saw from Lisa Schutte Koester from Wild Acorns Pottery.

These kits have allowed me to really play with color and has saved so much time (since I’m not opening and closing bottles), space (one of these can hold a minimum of 26, 2oz bottles of underglaze! 

Since posting this video Lisa contacted me and let me know there are other types of containers that are 100% sealed on Amazon, which would save even more time because they wouldn’t need to be sealed! 

I’ll be sharing more videos in the future of fun explorations and experiments I’ve trying over the last year or so.

I’M BACK….so let’s get to it!

Tammy Jo

Episode 3 – It’s A Clay Party! – Back In the Studio…Trimming Bowls & Lots of Wash Glazing

Episode 3 – It’s A Clay Party! – Back In the Studio…Trimming Bowls & Lots of Wash Glazing

Back for another week inside & outside the pottery studio and I’m journaling my projects, progress and learning experiences (both the good & bad)!

This Weeks Video
2016 Hobby Potter Weekly – Season 2 – Episode #3 (8-6-16):

– A Clay Party! : The week started of great as I ventured outside my studio for a fun ceramic adventure at the “Chartreuse Muse Art Gallery” in Modesto, CA. I celebrated the birthday of my artist friend Nicole Slater, along with her girlfriends, by enjoying a class on building luminaries (wonderfully taught by Ceramic Artist & Co-Owner of the gallery Sandra Veneman)!  Being surrounded by other people all chatting and playing with clay together was definitely  a new exciting experience! I got so immersed in what other people were making I actually forgot to get a posterity photo of what I made(I’ll share it when it’s finished! 🙂  I learned a new perspective on hand-building cylinders and loved the fact I had to get creative without all my usual studio tools!  I’d recommend it for everyone!



On the Wheel – Trimming & Marble Textures:  The bowls made in last week’s episode needed a trim, so I jumped on the pottery wheel to finish things up. They did get a little more dry than I like, but was still able to trim. This brown stoneware reclaimed clay is amazing for special effects! Because it was reclaimed using remnants of the previously pugged white stoneware and also had some sculpture clay thrown in, the trimming results are always unique. With the added chunks of white clay, it trims out to an interesting marbled texture. Sadly it’s 15 pound away from extinction as I’ve run out and there is no way to recreate this formula exactly. Thankful and excited about these bowls.



–  Glazing & Testing: Opened the bisque load of projects worked on in past episodes. The pieces were low fired (bisque fired) to Cone 04 in my Skutt Kiln – KM1018.

Hobby Potter Weekly - Episode 3 20160804_151024

Actually, If I look at the pieces and glaze work….everything is TESTING. The incense burners and small bowls were a test, the glaze work (combinations of colors and the different wash effects)…were also all tests! I can’t wait to see what new things I’ll learn from the next kiln opening!  Note to self: “Tammy Jo, you need to grind and reapply kiln wash to your shelves…they need some T.L.C (Tender Loving Care)!”

Thanks for watching and please feel free to comment, I’d be happy to hear from you!

Enjoy the clay!

Tammy Jo





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FINAL RESULTS – Cross-Mixing Commercial Glazes Pt 4/4

This is going to be a fairly long blog post as I wrap up this months glaze mixing test analysis!

Your diamonds are not in far distant mountains or in yonder seas; they are in your own backyard, if you but dig for them.”   Russell H. Conwell, Acres of Diamonds

WHY MIX COMMERCIAL GLAZES: This project began because I have far too many unused (some untouched) commercial glazes to warrant the extra expense of purchasing chemicals to mix my own. In order to deplete my supply for conscience sake, I needed to know what already have and test to them see if I have something even better. Did I have a diamonds in my own backyard?
                                     BEFORE FIRING                        AFTER FIRING CONE 5

ALTERING A WELL LAID PLAN: I had visions of getting all my glazes mixed…but the multitude of options was just too daunting. I eventually choose to mix certain glazes because I wanted to see the results.

Here were the general guidelines:
1.       Mix Only Cone 5 Glazes
2.       Mix Only Same Brands
3.       Depending on the colors here is how I chose to mix them:
a.       Amaco – Celebration
                                                               i.      TINT  – Mixed to create a Tint (added 50% white)
                                                             ii.      SHADE -*/Mixed to create a Shade (added 50% black)
b.      Amaco – Potter’s Choice (still had more of these I wanted to test)
c.       Duncan – Renaissance Glazes
d.      Laguna – Morracan Sand Series (The black & white used to shade and tint only)
e.      Spectrum
f.        Speedball
Since I could have done more testing, and more testing…and MORE testing, I’ve decided to make it a standard part of my clay practice to mix and run test chips with every glaze firing.
I FOUND MY DIAMONDS!  I believe the washes tested on the back of each test tile gave me the most satisfaction. Since I work with washes these test were GOLD to me! Seeing all the different colors filling in the groove numbers was the biggest thrill. I realized how much.

This video shows each test tile and gives what colors were mixed with what and the completed sample chips! 

What are your thoughts, do you have a favorite? !!!

I could spend an entire lifetime mixing what I have…the possibilities were just endless! If I were to change the clay alone, all these colors could be completely different. Obviously I did not get to mixing all my glazes, (as there were just too many), but I believe I touched on exactly what I wanted to know about what I have. Here is a recap of the results and my thoughts.