Product Safety for Potters

£120.00

This course teaches you all you need to know to make work that is safe for the user. This covers glaze stability and food safety; making work microwave, oven, dishwasher and freezer proof; electric lamps and candleholders, and all the other aspects of producing good, safe, functional work.

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Course Details :-
  • Online Course
  • May 12, 2022 - June 30, 2022
  • 8 weekly sessions, starting at 7pm and lasting an hour and a half

By the end of this course, you should be able to…

  1. Understand glaze stability, how to test it and how to improve it using the UMF, limit formulae, Stull chart and other guidelines
  2. Understand the mechanisms of glaze leaching in both alkaline (dishwasher) and acidic (food) environments
  3. Understand which materials in glazes are potentially toxic, and how likely it is that a glaze will be toxic
  4. Understand the effects of thermal stresses on clay and glazes, and how to design to minimise them
  5. Understand the requirements to make pieces safe for the dishwasher, oven, microwave and freezer, and methods of testing their behaviour
  6. Understand the mechanisms of frost damage to pots, and the design and material considerations in making frost proof pieces
  7. Understand the level of waterproofness needed by different pieces, and how to test it
  8. Assess whether a piece is sufficiently stable for its purpose
  9. Understanding the issues in making electric lamps both safe and compliant with the regulations as easily as possible
  10. Design candlesticks and other pieces with an open flame
  11. Understand the legislation and standards covering product safety and testing (UK, EU and USA)
What level is the course and do I need any particular skills? Intermediate. For the glaze section, some knowledge of glaze chemistry would be an advantage. How will I be taught, and will there be any work outside the class? The course is primarily run through the weekly online sessions, which are a live lecture where you can also ask questions or get a discussion going. These are recorded and put on the course web page for those who cannot make the course times due to time zones or other commitments, or for those who want to replay them. Additional material that you may wish to explore is on the course website. This will help you go deeper into the subject matter, should you wish to do so. There will be four discussion periods during the course, where we can discuss any of the course material or any more general questions you may have. These will be at the end of selected sessions, and also will be set up for other days and times for those who cannot attend the live sessions, whether due to time zones or other commitments. In addition, the course has an online forum that you can use at any time. There will be suggestions for you to test some of your pieces between sessions. Are there any other costs? Is there anything I need to bring? No advance preparation is needed. You may want to test some of your work (which will probably get damaged in the process). This mostly uses standard studio and kitchen equipment, though the following are useful if available:
  1. A pressure cooker
  2. Methylene blue or a similar dark stain (5ml is plenty)
  3. pH paper or a pH meter
  4. 50g of soda ash
  5. A digital probe thermometer reading from -20° to 250 °C, e.g. a meat thermometer
 

What's included in the price

You get: - Eight live lectures with questions and discussions, lasting about 90 minutes each week - Recordings of all lectures for later viewing - Additional optional online course material, giving background info and greater depth - Four discussion periods - for students unable to attend the live sessions duplicate discussion sessions will be set up on times/days to suit the course participants - Dedicated online forum for discussion by all students on the course - Downloadable PDFs of all presentations - Premium level access to the Tech part of my web site, containing much more information, references etc. - Course completion certificate

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