Dipping Potter’s Choice Glazes
Cone 5-6 Glazes
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Notice a Difference?
Todd Pletcher has been experimenting with his cooling cycle!
“Besides the great results I get from layering, I have found that altering the firing schedule by down-firing my kiln, can create even more complex and beautiful glaze results!
I generally take the kiln up to 2195° and then start slowly down-firing to 1900°. The down-firing takes a few hours with ‘holds’ programmed in a few different places. It’s taken me a while to find the results that I desired…just eperiment and Have Fun!
See what others are doing and join the discussion at our
Potter’s Choice Exchange on Facebook!
The dry formulated PC’s are different from the brush formulated, so make sure you watch all three videos!
Potter’s Choice Glazes—Mixing Dipping Glazes
Todd Pletcher demonstrates how to mix the dry formulated Potter’s Choice Glazes.
Potter’s Choice Glazes—Waxing Your Pots and Dipping Glazes
Todd Pletcher demonstrates how to wax the bottom of your pots and how to properly dip your pieces, using Potter’s Choice Glazes.
Potter’s Choice Glazes—Layering with Dipping Glaze
Todd Pletcher demonstrates how to layer dry formulated Potter’s Choice Glazes by dipping different sections of his pot.
Dry Dipping Directions and Warning
n the last year we have been testing the PC dipping glazes in an effort to update/clarify the printed label instructions. (The label instructions pre-suppose that the user is an experienced production potter. The directions acknowledge that glazes have special water requirements and then provides a basic recipe. The basic recipe is really too basic and misleading if you don’t have prior knowledge about mixing dipping glazes and understand intrinsically how much water to add.)
We’ve discovered that the correct water amounts fluctuate depending on the properties of the water source, as well as the glaze formulations. The label instructions certainly do not take this into account.
PLEASE READ: These instructions are meant to clarify the label directions.
Precautionary Warning: Always wear a NIOSH approved respirator or mask for dust or mist when mixing dry glazes. Do not empty the glaze powder into another container. Use this container to mix the glaze in. Add water slowly so as not to produce any dust. If you have any questions regarding the safety of this process please refer to the MSDS by clicking here. Also, look on the website for the latest updates on mixing dry glazes. (2/14/15)
Using a dipping method for glazing rather than using a pre-mixed brushing formula saves application time but requires greater technical responsibility by the end user.
Glaze compositions differ and their ingredients directly affect a glaze’s viscosity when water is added. Consequently, a good dipping glaze consistency may vary from glaze to glaze. Local water conditions also affect the amount of water needed for a dipping formula. At present, we don’t have a universal instruction for the amount of water to add.
The following procedure should guide you to the correct water amount needed for successful dipping results.
Slowly add 3 gallons of water to the bucket. (Please note this amount of water is less than the label directions but we recommend this because it is much easier to add water in the final steps than trying to remove water.) Using a glaze mixer attached to a hand drill, mix the glaze thoroughly for 5 minutes. Then allow the mixture to “soak” (fully hydrate) for at least 12 hours. (You can even leave it to soak overnight.)
Using a glaze mixer attached to a hand drill, mix the glaze thoroughly for 15 minutes. This step can be broken into shorter time segments but the aggregate time should reach 15 minutes.
It is likely that the glaze will be too thick at this point. A good dipping glaze consistency is customarily described as of a “cream-like” quality. But this is a value judgment based on usage and testing. As stated earlier, a good dipping glaze consistency may vary from glaze to glaze.
The only sure way to test a glaze is by dipping a Cone 04 bisque fired (1940°F/1060°C) test piece into the glaze and promptly lifting it out. The glaze should stop running immediately and the application should be uniform. Glaze fire the test piece to Cone 5-6 (2205°- 2269°F/1207°- 1243°C).
If you determine that the glaze is too thick, add 1 pint or 1 cup of water, mix for one minute and test. Continue to add water in steps (of either 1 pint or 1 cup), mixing and testing until you reach your desired consistency.
The amount of soluble salts in a glaze changes over time. Always re-mix and test your glaze before a dipping session.
Store prepared glazes in their own airtight buckets.
Request Material Safety Data Sheets when using in manufacturing. Tableware producers must test all finished ware to establish dinnerware status, due to possible variations in firing temperature and contamination.
Just out of the kiln…