March 2026: We are doing major upgrades to code here, please be patient regarding any issues. If any page is not working for a period of hours, please contact us. Thank you.
| Monthly Tech-Tip | No tracking! No ads! No paywall! |
On the left is Spectrum 748 fire engine red cone 04 glaze. With three coats. On the right is Amaco V-388 underglaze, also with three coats. It is covered with Spectrum 700 transparent. Both were glaze fired to cone 05 and bisque fired to cone 04. The color intensity of the glaze on the left varies with thickness, the ridges of the throwing lines are clearly highlighted by this. But underglaze on the right is completely opaque, there is no variation on any contours. Of course, the underglaze method is more costly, the bottles are three times the price of those of the glaze of the same color.
| Glossary |
Underglaze
Understand pottery underglazes: Why they brush differently, how they fire, why clears fail over them, and how to make your own recipes. In technical rather than art language. |
Buy me a coffee and we can talk