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slip-casting

Introduction

Slip cast sake cup
Slip cast sake cup
Best of Show Award Rotary Art Spectacular 2013

The American website accessceramics.org features the work of over 400 international ceramic artists who are invited to upload images of their work on an ongoing basis. Work created using a particular technique may be found using the menu: browse > technique. View the slip cast ceramics on accessceramics website.

Equipment

Buckets One for mixing plaster, a second containing water for washup - plaster discarded in sink will block it.
Washing up bowl To act as a type of cottle to contain the object to be cast and prevent the plaster from running out
Plastic jugs for pouring casting slip into moulds
Fitted mask with filters A paper mask will not suffice when mixing fine dry ingredients such as plaster. Use a fitted mask with filters such as a Unisafe RP462 mask. You will need two Class P2 filters for the mask. The mask is available in small/medium and large.
Plastic sheeting protects surfaces from plaster
Suitable objects for casting start with symmetrical objects for 2-piece moulds
Permanent board marker to mark edges of object prior to casting in plaster
Wooden modelling tool to achieve a neat edge where clay meets object prior to casting in plaster
Small sponge for tidying rims and 'seams'
Trimming knife for refining shape

Materials

Potter's Plaster available from Borals
Paper pulp to add to wet plaster
Practice clay for isolating parts of object prior to casting in plaster
Soft soap to act as mould release
Walker's 10 casting slip may be purchased or mixed using Walker's 10 powdered clay
Deflocculants: Sodium Silicate, Dispex and Soda Ash enable fluidity of casting slip with minimal amount of water
Talcum powder small amount rubbed on plaster mould facilitates release of slip cast object