Silver casting – difficult process to make a qualitative and beautiful thing, it is necessary to know the mass of subtleties and to have wide experience. But you, at a certain skill, will be able to make a simple subject and.
Instruction
1. Estimate the melting temperature necessary to you. The fact is that pure silver – a big rarity and in jewelry practice it is not applied. Respectively, temperature of melting can vary, it is necessary to consider composition of alloy which you plan to create. Average temperature for melting alloys of silver is 9600C. Melting of metal requires a torch and a crucible, prepare them in advance. From any material cut out model of what you want to cast.
2. For preparation of a form for a product take 7 parts of quartz sand and 1 part of plaster, mix substances. Then dissolve this mix with water to consistence of sour cream and pour in any capacity in which the product model which is previously made by you will be located (better that it represented something like a case, two-piece). On corners of capacity put carnations. Take the product model, grease it with soap solution, dry and ship half in plaster mix. Carnations have to be focused vertically all the time. Wait until all mix dries, then miss the mark the hardened weight with oil. Pour the same mix in other part of capacity, put from above the first part with the product model, wait until also the second part of mix dries. As a result at you two forms of future product which need to be wiped carefully from oil will turn out and to connect strong together, previously having made in one of halves a small opening (5 – 6 millimeters) in order that it was possible to pour in metal.
3. Directly casting. Heat metal in a crucible by means of a petrol torch. Insert a small funnel into an opening, quickly fill in the melted metal there and too very quickly close an opening a cover with cotton wool. Cotton wool has to be attached from below covers – so that it covered an opening. From the heated metal cotton wool will flash and will give pressure in a form. As a result you should not think out and potter with the centrifuge. Without pressure metal will not begin to flow in a form or will give considerable distortions. In this plan silver is similar on properties to mercury – in the melted state it does not spread on a surface, and is pulled together in a round ball.