White Label (Rolls), Castaldo
Castaldo White Label - Rolls Vulcanising:
- Castaldo White Label®
- 5lb rolls (2.27Kg)
- Cut to any shape you require
- Enough jewellery moulding rubber to make 15 to 25 standard size jewellery moulds
- Firmer than gold label and no shrink pink
- Has a high concentration of pure natural gum rubber
- Which makes it resilient and pliable
- Qualities that the experienced mould-maker values in his efforts to produce high-quality moulds in the shortest reasonable time
- Supplied in easy to handle tube which keeps the rubber neat, clean and fresh
- Lined with cloth and lightly dusted to keep fresh and protected (the dust does not interfere with the mould making)
- See PDF's in category information for fact sheet and technical information
- It is recommended that a vulcanisation temperature of 307°F (152°C) is used
- In order to calculate vulcanisation time it is recommend to follow this: 7.5 minutes for every thickness (1/8 inch or 3.2mm) of mould rubber, with a minimum time of 30 minutes
- As an example a 3/4 inch mould (19mm) consisting of six thicknesses should be vulcanized for 45 minutes (6 x 7.5). A half inch mould (13mm) should be vulcanized for 30 minutes (4 x 7.5).
