Ken Clarke
Private 2
- Joined
- Sep 5, 2005
- Messages
- 146
Day 31 to Day 38 – Casting the Masters.
At this stage we batch all the masters up and courier them to our factory over the border in Southern China. This is the first time that our factory would have seen these masters so explicit instructions for each piece are included. An example here would be spear handles: They are too long and thin to be cast in metal (they would bend too easily on the finished product) so wire rod has to be used instead. We therefore have to specify to them the exact dimensions of both length and diameter of the wire rod to be used.
Silicon rubber molds are then made of all the pieces. I did not take photographs of this mold making process as I was not there at the time; however below is a photograph showing the casting department in our factory.
The molds for the spin casting machine are circular. One of these is clearly shown to the right of the photograph and is painted bright yellow. Each mold will hold quite a few pieces and have a channel carved to the center for the molten metal to flow in from. The mold is placed in spin casting machines, which can be seen in the photograph and look rather like industrial size rice cookers! The advantages that spin (or centrifugal) casting has over other forms of “drop” casting is that when the machine spins the molten metal is forced to the outside of the mold giving a seriously crisp casting and also by doing this it minimalises the problems of air bubbles in the final product.
In the center of the photograph there are a bunch of silver objects looking a bit like motorcycle spokes. These are the product of the molten metal in the channels feeding the actual piece we need to cast. At the end of each “spoke” a piece of casting is cut off and then these “spokes” are recycled ready for the next batch.
We usually order 3 castings of each piece at this stage to be returned to us in Hong Kong:
Number 1. We glue together to make certain all the pieces fit snuggly together and that all holes have been drilled in the correct places. We also check that the mold was made correctly.
Number 2. We send off to the master painter chosen for this job.
Number 3. We file in archives.
At this juncture I feel it appropriate to mention some details of our factory in China and our attitude towards the labour force in this country.
There has been a lot of bad press recently regarding Chinese “sweatshops” and the use of both under age and “slave labour”. I want to make it clear that East of India as long as I am around would never use a factory that did not adhere firmly to both the law and moral labour practices. I personally find it disgusting that these places exist. Fortunately it appears that they are being closed down gradually and less new ones are reappearing so hopefully these bad practices will be stamped out eventually.
Our factory only recruits staff over 18 years of age (we have checked this on our visits), supplies a decent factory with electric fans in the hotter summer months, decent living conditions and wage for the area they are located in. They supply 3 meals a day and also sleeping accommodation. They also give staff holidays which are normally taken over the period of Chinese New Year. Let’s face it if they didn’t then the workforce would get up and leave and walk down to the electronics factory down the road. These are free people and not slaves chained to a desk!
That last bit was a little off topic but I thought I would get it off my chest in case any reader thought otherwise.
At this stage we batch all the masters up and courier them to our factory over the border in Southern China. This is the first time that our factory would have seen these masters so explicit instructions for each piece are included. An example here would be spear handles: They are too long and thin to be cast in metal (they would bend too easily on the finished product) so wire rod has to be used instead. We therefore have to specify to them the exact dimensions of both length and diameter of the wire rod to be used.
Silicon rubber molds are then made of all the pieces. I did not take photographs of this mold making process as I was not there at the time; however below is a photograph showing the casting department in our factory.
The molds for the spin casting machine are circular. One of these is clearly shown to the right of the photograph and is painted bright yellow. Each mold will hold quite a few pieces and have a channel carved to the center for the molten metal to flow in from. The mold is placed in spin casting machines, which can be seen in the photograph and look rather like industrial size rice cookers! The advantages that spin (or centrifugal) casting has over other forms of “drop” casting is that when the machine spins the molten metal is forced to the outside of the mold giving a seriously crisp casting and also by doing this it minimalises the problems of air bubbles in the final product.
In the center of the photograph there are a bunch of silver objects looking a bit like motorcycle spokes. These are the product of the molten metal in the channels feeding the actual piece we need to cast. At the end of each “spoke” a piece of casting is cut off and then these “spokes” are recycled ready for the next batch.
We usually order 3 castings of each piece at this stage to be returned to us in Hong Kong:
Number 1. We glue together to make certain all the pieces fit snuggly together and that all holes have been drilled in the correct places. We also check that the mold was made correctly.
Number 2. We send off to the master painter chosen for this job.
Number 3. We file in archives.
At this juncture I feel it appropriate to mention some details of our factory in China and our attitude towards the labour force in this country.
There has been a lot of bad press recently regarding Chinese “sweatshops” and the use of both under age and “slave labour”. I want to make it clear that East of India as long as I am around would never use a factory that did not adhere firmly to both the law and moral labour practices. I personally find it disgusting that these places exist. Fortunately it appears that they are being closed down gradually and less new ones are reappearing so hopefully these bad practices will be stamped out eventually.
Our factory only recruits staff over 18 years of age (we have checked this on our visits), supplies a decent factory with electric fans in the hotter summer months, decent living conditions and wage for the area they are located in. They supply 3 meals a day and also sleeping accommodation. They also give staff holidays which are normally taken over the period of Chinese New Year. Let’s face it if they didn’t then the workforce would get up and leave and walk down to the electronics factory down the road. These are free people and not slaves chained to a desk!
That last bit was a little off topic but I thought I would get it off my chest in case any reader thought otherwise.