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Mould Making

Home » Mould Making

After you have invested many, many hours in wax modelling, you'll want to create a robust mould to withstand the kiln firing process.  Using quality materials is imperative to ensuring a good mould for glass casting.

Mould making products used at Dicastglass Studio. 

  • Dental and Utility Plaster are both used in refractory moulds - each plaster has benefits of use.
  • Silica flour, top quality grade (350) is used with plaster for refractory moulds.
  • Fibreglass is used in our studio as a 'skin' layer to the refractory moulds.
  • Grog is used to add strength to larger refractory moulds.
  • Silicone Rubber is a valuable asset to the casting studio to make replica moulds for pouring multiple waxes.

Dental Plaster

At Dicastglass we use Dental Plaster for simple to medium difficulty hand-built, layer moulds in the lost wax glass casting process. We find it efficient to use as layers firm up quickly (saving us time). 
Dental Plaster a fast setting, hard plaster maintaining all fine detail from the wax surface.

Dental Plaster is available in 5kg and 20kg bags.

Watch videos on measuring and mixing plaster and silica.

Tip:  Dental Plaster is a multi-use plaster, and has many other uses in the studio.  Use dental plaster for models, plaster sheets and wax pouring receptacles.
Full Details add to cart From $11.00

Silica 350

We choose to use Silica 350 for mould making at Dicastglass Studio.
Silica 350 is a fine grade silica maintaining fine detail on moulds for glass casting.

Silica 350 is available in 5kg bags.

Watch Videos on measuring and mixing Plaster and Silica for Glass Casting Moulds.
Full Details add to cart From $15.00


400CSM - chopped strand mat.
Sold in 3 sizes - 0.25 sq. metres, 1 sq. metre, and 5 sq. metres.

Watch videos on preparing and using fibreglass in moulds for glass casting.

Tip: Di recommends cutting mat into 75mm squares, then splitting the mat into 4. Adhere to your mould after the first layer with plaster/silica mould mix to create a 'skin'.

Full Details add to cart From $8.00
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