I've actually just found on how to make a mold for plastics things, I just need to know if anyone knows the procedure used in making a perfect cast of something like a ps3 casing

xXKILLERXx12 wrote:

Im sure Powerslave knows

Quite right, but it takes a few molds to get it right, they have to make a mold of both sides
of the case.

MAKING A MOLD:
Molds may be made of metal or plaster of paris. Metal molds, however, require a great deal of skill and equipment to produce. Therefore for the beginner, it is advisable to use plaster of paris.

To make plaster of paris molds; first obtain a box, wood or cardboard will do; about an inch longer each way than the article to be cast. Coat the inside of the box very thoroughly, yet thinly, with stearine or sweet oil. Use this also on the article to be cast. This acts as a lubricant and the plaster of paris will not cement itself to either the box or the article, if the oil is evenly distributed.

Now, next make a thick, creamy mixture of plaster of paris by sifting the plaster gradually into the water, stirring constantly to prevent lumping. Let this stand a few minutes to allow the air bubbles to escape. Pour mixture slowly over pattern in this box to about double the thickness of the pattern.

Allow several hours to dry, then remove. If the stearine or sweet oil was applied properly, this will be easy. When the mold is thoroughly dry, give it a coat (thin) of shellac and repeat in 12 hours. Mold is now ready for use.

MOLDING: First and foremost always make sure that you have lubricated your mold with beeswax or stearine. Place molds on a reasonably level surface and pour the sulpho-plastic into the mold, quickly and smoothly. Do not pour from a height as this will break the lubricant and leaves blemishes on the casting.

Plastic must be poured quickly to prevent cooling in folds and thus making a poor casting. One of the big assets of sulpho-plastics is the fact that it dries and hardens almost immediately. There is no long wait for casting to dry.