Having since moved on to two additional colleges I’ve always made sure we did business with Tilgear. Pro-HT is a high technology phosphate bonded product designed for casting high temperature alloys such as Platinum and Steel with metal pouring temperatures up to 2100 c / 3800 F. It is then shaken over and around the pattern and over any surface that easy separation is required from. Carbon deposits from the wax must combine with oxygen to form CO2 and thus excape through the pores of the investment. Unless specified, offers and vouchers are not valid on products which are already discounted from RRP, gift vouchers, books and from the I LOVE ART range.

To enjoy all that Hobbycraft has to offer, please enable cookies or check whether another programme is blocking them. Pro-HT is packaged in aluminium foil bags to achieve a long lasting, consistent and high quality powder. Pro-HT has a high refractory content and fine particle size distribution, this produces high fired mould strength with precise detail replication of the wax pattern under the harsh casting conditions these alloys demand. We would always advise to dust the mould with metal powder first before backing with a resin-powder mix to give a deep metallic finish. Once dry, remove the stone by pressing it out from the back very carefully with a tool that that won't damage the stone, or use a wax stick to lift the stone from the front.

Phosphate bonded powders are extremely moisture sensitive and exposure to atmosphere will degrade product performance. To create a placeholder for a bezel set stone, create a traditional bezel ( using bezel wire) for your chosen stone. We will use your data to personalise and improve your experience on our digital platforms and to send you relevant products and offers we think you'll love. You will have 30 minutes before this plaster begins to set allowing you to ensure you have no air bubbles.

For a 6″x4″ jewellery mold, 3 hours will be sufficient to remove the bulk of the wax and 2 hours should be sufficient for steam dewax.Parting Powder prevents prevents the casting sand sticking to the pattern (object being cast) and allows the pattern to be more easily removed from the sand as the mould is made. Press the stone back into the setting carefully, and let the clay dry to leather hard with the stone in place.