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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

MDENTAL
MDENTAL
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 $8.00

Silica 350

MMSILICA
MMSILICA
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 and 25kg bags.

Watch Videos on measuring and mixing Plaster and Silica for Glass Casting Moulds.
Full Details add to cart From $14.50

Grog - medium grade

MMGROG
MMGROG
At Dicastglass we add grog to the outer layer(s) of our medium to large moulds in the process of mould making for the lost wax casting process.

We use Grog (medium grade) to strengthen moulds which have a glass weight in excess of 2kg. 

Grog is available in 1kg and 5kg bags.

Tip:  The amount of grog used in a mould mix depends on the desired strength of the mould.  This will vary from shape to shape.
Full Details add to cart From $6.50

RTV2 Silicone Rubber

MMRTVRUBBER
MMRTVRUBBER

Currently OUT OF STOCK

We recommend RTV2 Silicone Rubber for it's quality, durability and versatility.
This is the only silicone rubber we use at Dicastglass Studio for all our rubber moulds, as it is so versatile. 

RTV2 Silicone Rubber is ideal for quick simple moulds applying silcone direct to the model.  RTV2 Silicone Rubber is also perfect for complex plaster case moulds.
 
Cures in 3 - 4 hours, molds ready for use within 24 hours.
Available in 1 litre and 4 litres.

Tip: Mix in small volumes (250-400grams) for even mixing.
Full Details add to cart From $60.00

Moulding Silicone Thickener

MTHICK
MTHICK
Use Moulding Silicone Thickener to adjust the thickness of RTV2 Silicone Rubber making it suitable to ‘paint’ or spread over vertical surfaces.

At Dicastglass Studio we use RTV2 with Moulding Silicone Thickener in two different thicknesses – a thin ‘cover’ or detail coat and a thick build up layer.
• Thin detail coat ratio
= 0.2% (1000ml RTV2 + 30ml Catalyst + 2mls thickener)
• Thick coat ratio (to build up 5mm approx
= 0.5% (1000ml + 30ml Catalyst + 5mls thickener)
Full Details add to cart $30.00

Fibreglass

MMFIBRE
MMFIBRE
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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