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Step 25The Quick Way
The first mould i every made was made from plaster , and it took me a lot less time than drawing a full 3D plan in CAD
The sine waves were plotted on paper , and measurements taken in 2mm increments , and a contour plan was drawn
The contour plan was laid over a block of plaster ( 2nd mould was WAX ) and a hand herald router was used to rough out the contours , then chiselled into shape , and sanded smooth
Then it had to sealed and mould release applied before a fibre glass positive mould was then taken from it , then the positive was sanded polished , sealed and moulded to get the negative mould i used
It wasn't that much faster , the drawing was fast , but the sanding was endless , with the CNC ones , the drawings took for ever and the moulds came back smooth
The sine waves were plotted on paper , and measurements taken in 2mm increments , and a contour plan was drawn
The contour plan was laid over a block of plaster ( 2nd mould was WAX ) and a hand herald router was used to rough out the contours , then chiselled into shape , and sanded smooth
Then it had to sealed and mould release applied before a fibre glass positive mould was then taken from it , then the positive was sanded polished , sealed and moulded to get the negative mould i used
It wasn't that much faster , the drawing was fast , but the sanding was endless , with the CNC ones , the drawings took for ever and the moulds came back smooth
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