Pouring Glaze with a Watering Can

Pouring Glaze with a Watering Can
12/03/2017 Derek

I’m sure that using a garden watering can for pouring glazes is a common technique, but when I came up with the idea I thought I was a genius ­čÖé ┬áThe design of a watering can ensures a constant, strong stream of liquid during pouring that is perfect for glazing. ┬áBubbles are reduced since the watering can pours liquid from the bottom of the can.

(Here’s a good video by John Britt about pouring the outsides on a turntable.)

Adjust the specific gravity of the glaze. Here, a 250ml beaker is zeroed-out.

The weight of 250ml glaze is 386.7. Dividing by the weight of water, 386.7/250 = 1.55. For this glaze, 1.5-1.6 is a good pouring thickness.

Filling a watering can with glaze.

Rotating the piece with your hand, maintain a continuous pour of glaze.

You might need to rotate the piece backwards and forwards two or three times.

Using a brush with watered-down glaze, fill in any holes.

Glaze must be sufficiently watery in order to be absorbed into the hole.

Glaze will inevitably end up on the outside of the piece. First scrape with a blade or metal rib.

Finally, sponge off any glaze that remains on the outside.

After waiting a day for the ware to completely dry, the outside can be poured.

The piece is rotated quickly to avoid glaze build-up on the inside rim.