We are your rubber solutions partner for the scale model industry. 

Centrifugal casting, also known as spin casting and white metal casting, uses centrifugal force to produce castings from rubber or silicone moulds.

Used by the giftware and model industries, a wide range of items can be made in this way, from scale model figures, gaming miniatures, fantasy figures to trinkets, jewellery, badges, pins and much more.

Cokers have been supplying our own formulations of casting discs since our establishment in 1952. These include traditional black organic rubber discs alongside a range of silicone formulations.

All formulations are mixed to order on site ensuring ideal usage and maximum shelf life.

Formulations

Black Organic Discs – are a traditional black rubber formation. Each disc is supplied with thin laminations on each side to enable the mould maker to cut their designs. Black discs typically come in different grades defined by their hardness once vulcanised.

Black organic discs are generally cheaper than their silicone alternative. In this way they can be more cost effective, especially for production moulds.

Silicone Discs – are supplied as a putty like mould and are easier to use, especially for beginners. We offer 3 main types of silicone moulds.

Low temperature formulations ideal for delicate masters including resin and putty but also suitable for metal. The formulations have a low vulcanisation point of 80-90 DegC so are excellent at protecting the masters.

General purpose formulations vulcanise at 150 DegC so if you are also using black organic discs there is no need to change the vulcaniser pressure or heat settings. Suitable for pewter.

High heat silicone formulations developed to withstand higher pouring temperatures of zinc and resin and will last longer in spinning than a standard disc can. These also come with a low temperature cure system.

Size and Availability

Discs are supplied in approximately 25mm (1” thickness) pairs. Each pair is supplied in 2 halves of 12.75mm (0.5”) interleaved with polythene.

Standard organic discs are made up of 6 laminations per side which can be peeled away or built up.

Silicone discs are a solid putty like material. The standard size is the same as for the organic discs above. Special ¼ laminations are available in all sizes to help you build up the discs.

Standard sizes include: 6”; 9”; 10”, 11”, 12”, 15”, 16”,
18” and 20”.

Mould cans

We supply made to measure mould cans. The cans come complete with mushroom and screws. The standard mould can is suitable for a 1” thickness disc. Deeper cans to take 1 ½” or 2” discs are also available.

Hours

8-5pm
Mon - Fri
(open until 1pm on Friday)

Service area

Worldwide

Contact our casting disc specialist

01795 535008

info@j-coker.co.uk