When Tue Jul 20 6pm — 7:30pm
Where Workshop - Ceramics
1825 Monetary Ln #104 Carrollton, TX 75006
What How to make, use and fire Macrocrystalline glazes.
Host Christy Cooper


  • Cost: Free
  • Restrictions:
    • DMS members only
    • Ages 18+

Cancellations for this event must be made before July 20, 2021 — 6:00pm.

Registration for the event is closed.

About this Event

Advanced Glazing: Mid-fire Macrocrystalline Glazes
Sessions: Tuesday July 20 @ 6:00pm and a Glaze Application day TBA. (**If you haven’t been in one of the previous firings, you must attend both**)

Please read all the information below, it is important!

Looking for a way to stretch your glazing vocabulary? How about with more...science! In this pair of classes students will learn how to make, use, and fire a class of specialty glazes that produce visible crystal growth in the matrix of the fired glaze. These glazes are known for their difficulty in producing consistent, reliable results, but when the construction, chemistry and heatwork all come together, grooviness ensues.

These glazes are very different than standard, commercial glazes and there are many additional steps necessary to successfully fire, but understanding the process and chemistry behind them can help to better understand what is happening with your current glazes.

Students will need to attend both sessions of the class to be able to use these glazes and to participate in the specialty group firing that we will do. These glazes *will not work* in our standard community firing. The first class will cover the production of pieces suitable for macrocrystalline glazing and how to construct the safety stand. A couple of weeks later (as decided by the group and allowing time for pieces to be made+bisqued) the second class will cover the science behind the glazes and how understanding that will help you achieve the final result. You will also learn how to prep the glaze and will apply it to your work. We will also verbally cover kiln firing schedules (more science, yay!) and, if you are interested, you are more than welcome to come to the load in and unloading of the kiln.

If you have taken a DMS Macro Glaze class previously, the first session is optional. You will need to come to the second session for glazing or make arrangements with me for an alternate date.

Class Goals:
How to prepare the surface of your ware to maximize/facilitate crystal growth and visibility (throwing and trimming finishes, engobes, etc.)
How to create specialty firing stands to protect your ware and the kiln from run off glaze
Understanding of the basic chemistry involved with this class of glazes and how that affects crystal shape, placement and color
How to prepare these glazes for application (choosing, modifying, physical preparation)
How to apply these glazes to your ware
Understanding of the firing cycles required to produce these effects

Prerequisite: Ceramics 100 and strong competency in ceramic construction. This class will not be teaching you how to make basic wares. These glazes are very runny and are not suitable for very small items. Hand built, slipcast and wheel thrown are possible, we will discuss some limitations and concerns regarding handbuilt and slipcast items. There will be an initial cap on size to ensure quick firing turnaround for all students. We will aim for each student to fire approximately three items (with a size to not exceed 8” in any dimension). We will discuss suitable clay body types in the first session but T-mix no grog/sand or porcelain are strongly recommended.

There is a $10 fee (payable via cash at the first session) to cover the cost of the glaze.

We are aiming for mid-late August as the community schedule allows.

If you have any questions, please feel free to send me a message on Talk @cmcooper0 or at the same id at gmail. If you are unable to attend for any reason, please cancel as soon as possible to free up a spot for another. Thanks!

Special Considerations and Warnings

Students will need to provide their own, appropriate bisqueware and firing stands. This will be covered in Session 1. No Firing Stand=No Fire.