42A-2020 – John Colbeck- Glaze Course
October 11 – 17, 2020
A course for the understanding of glazes and glaze materials
For the intermediate level
The workshop fee includes the following:
Tuition of 6 – 8 hours per day
Studio open 12 hours per day
All materials and firings
Lodging in double room; single room on request at additional fee of 200 euros
Freshly prepared three course lunch with wine on all working days
Welcome breakfast, Welcome and Final dinner
Coffee break in the mornings and in the evenings
A deposit is required at registration. After submitting the registration form, you may proceed with the payment on-line. If you choose to pay by bank transfer, the registration will be confirmed once the deposit has been accredited in our banking account. The balance must be paid at the beginning of the course.
You may withdraw within 14 days of registration without incurring in any penalties and will have the deposit fully refunded. No refund of deposits past 14 days of registration, pursuant to articles 53 and following of the EU consumer protection legislation.
If La Meridiana cannot hold the course due to unforeseen events beyond our control, La Meridiana reserves the right to offer a voucher for a different course of your choice. The voucher is valid for two years. The deposit will be transferred to the new course.
Talk: the origins of glaze; the nature of glaze suspensions; the making of tests; glaze application; safe use of glaze materials and glazes
Practical work: preparing and applying samples of materials, and mixtures of materials, to test fire;
and beginning practical work of Tuesday.
Firing of material samples tests (that day). Firing 1.
Talk: the oxide composition of the mineral materials used in glazes and their roles in the formation of glazes; classic types of high temperature glazes; matt and glossiness in glazes.
Practical work: mixing and sieving different glazes for application to tests
Overnight firing of tests. Firing 2.
Talk: colour in glaze; the colouring oxides and commercial glaze stains and the importance of glaze context on their effect; the effect of atmosphere – reduction and oxidation
Practical work: pigment addition to glazes for application to tests
Overnight firing of tests. Firing 3.
Talk: preparation of found ingredients (wood ash, local clays, granite and marble waste). The nature of frits and their use. Low temperature glazes.
Practical work: completing high temperature test work completed by end of morning for firing that day.
Firing of tests (from midday). Firing 4.
Friday Talk: the work of Herman Seger – the Seger method explained. Tools for glazing. Glaze application to different forms. Practical work: application of raku and low temperature tests. Firing in raku kiln. Firing 5.