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Mouldmaking And Casting Workshops

Mouldmaking And Casting Workshops

Central Saint Martins
Taught by
Joseph Harrington


You will learn a traditional approach to silicon mould making, producing a one-part open faced mould of your own clay relief. You will be shown how to use your master mould with a wide range of casting materials and techniques. By the end of the course you will have acquired a number of casts and technical information to take forward into your own practice.

Topics covered

An emphasis will be placed on the use of a jesmonite casting system, using both pigments and metal gel coats.

Other casting materials include plaster, silicon and wax, and students will gain experience of producing waxes for metal and glass fabrication.

From these casts we will cover a range of finishing and polishing techniques to bring them to a finished object.

You will learn the principals of multi part moulds, making a two-part mould from a ready-made object.

Alongside this you will be shown how to produce life casts using both plaster bandage and alginate to create a cast plaster positive.

You will also have a chance to experiment with making one off objects by building your own moulds for a quicker and more experimental approach to casting, which can be integrated into the traditional skills and techniques covered.

Who should take this course?

This course is aimed at both beginners and improvers looking to gain an understanding of mould making and casting.

Entry requirements: None

Please note: This course is for students aged 18 and older

Tutor Description

Joseph Harrington (b,1979) graduated from the Royal college of Art in 2006, with a MA in Ceramics and Glass. He has been working at CSM since 2006 and exhibits and teaches internationally.
Joseph is a specialist in cast glass and model and mould making with a variety of materials.


Please bring with you to the first session:

  • Disposable rubber gloves x 10 pairs
  • Craft knife or scalpel
  • Scissors
  • Overalls or old clothes are advisable, along with a notepad and pen.
  • Materials provided on this course include:

  • Clay
  • Silicone rubber
  • Crystacal R casting plaster
  • Scrim (3"" and sheet)
  • Jesmonite AC100 resin materials including: Jesmonite AC100 resin, Quadaxial mat, chopped strand fibre glass and fillers (metals and stone)Plaster bandage
  • Microcrystaline casting wax.

  • *Please note that basic working tools are provided, but please bring any additional tools to your peference or you think might be useful.

    Available dates