Lost Wax Process

The method for manufacturing bronze products are the following processes.

       
mold the desired figure           model removal  

1. Original Model (master cast) : Use clay, oil clay and wax to mold      the desired figure and make final decoration.

2. Model removal : After the model is obtained, remove the model by     using any type cement block, plaster, para rubber and silicone block.
         *Except for the bronze work, it is recommended to use silicone            block because of its better quality and durable. This process is to            produce the model according to the desired quantity and the mold            can be reused.

   
pouring wax into the block  

3. Copy Model : After the model is obtained, copy model can be done according to the      following processes :
           3.1 Boil wax into liquid article, pour into the block and leaves for 2-3 minutes. In case of                  the large scale, we shall apply the boil wax onto the silicone.
           3.2 Pour away the excessive wax and leave only those on the surface part of the model                  for approx. 4 mm. thick.
           3.3 Make the core by using plaster mixed with sand and water (refractory material)                   pouring into the internal hole, leave until it becomes solid and remove the model, we                   shall obtain waxy model contained with lime.
           3.4 Decorate and add the missing part.
           3.5 Nailing and tying :
                 Nailing is to use steel or nail to punch through the internal lime texture at the                  appropriate intervals to retain core.
                 Tying is to mold wax into round stripe to tie the model at the same point on the top                  or bottom of the model and connect as the mouth.
           3.6 Rod tying : Mix plaster, sand and water and slighty pour throughout the model                   approx. 2-3 inches thick except the mouth. Use the string to tightly tie around the                   lime to prevent breakage between burning and gold pouring processes.

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applying  the boil wax  in case of large figure
removing the model
     
   
Decorate and add the missing part   tying       models are poured  throughout with lime     tie the string around the lime     tied lime  
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