Flocculation

Is your glaze too thin and flowing too quickly through the flow cup? Then the viscosity is too low. In that case, you need to flocculate the glaze, which means thickening it. This is done using a saturated Epsom salt solution. Here’s how to make it: pour 70 ml of hot water into a container and add 100 grams of Epsom salts. Stir well. Some salt crystals will remain at the bottom, which is perfectly normal. Use only the liquid, not the crystals.

First, stir the glaze thoroughly. Then carefully add some of the Epsom salt solution using a pipette or a spoon. Start with just a few drops. For larger quantities of glaze, you may need up to around ten millilitres. Add it gradually and avoid using too much. Stir well after each addition with a brush. You will notice the glaze becoming thicker and creamier.

Then measure the viscosity again using the flow cup. Repeat this process until you reach the correct flow time specified on the SOGO glaze label.

Note: If you accidentally add too much Epsom salt and the glaze becomes too thick, don’t panic. In the next video, we’ll explain how to make the glaze thinner again. This process is called deflocculation.