Material Used for Patterns : The common materials of which the patterns are made of the following :
1. Wood: The common woods are :
(i) Pine (ii) Deoder
(iii) Teak (iv) Kail
(iv) Shisham (vi) Mahogany
2. Metal: The common metals are :
(i) Cast iron (ii) Brass
(iii) Aluminium and its alloys (iv) White metal
3. Plaster: Plaster of paris and gypsum cement are used.
4. Plastics
5. Wax