July 1, 2019

CNCing forms for bronze casting moulds

Evans explains: ‘The challenge in machining this was that all vertical edges had to have a small three degree taper on to allow removal from the mould before casting in bronze. Specialist tools had to be purchase and careful optimisation of the toolpath was needed to achieve an accurate outcome.

‘Beside the technicality of the piece, the grain of the oak looks amazing and is shown very nicely by the curves of the piece.

‘Oak is an extremely solid and stable wood once properly seasoned and so an engineered block of oak makes a perfect material for mould making from due to its strengths and dimensional stability. ‘

The cast bronze Quarterfoil will eventually be installed into a listed building which is currently undergoing renovation.

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