Hi Sebastien and other ‘master’ makers.
It would be interesting if there was a new master making material.
However, due to the human eye and it’s reaction to light and colour
there is still a superior material for the final master.
Make your master from whatever suits the purpose to achieve the
preliminary shape. Think out side the square, I have cut up and
glued some really interesting pieces using plastics and plastic toys.
Remember you are making a rough piece that will be cleaned up when
cast in resin.
Cast an RTV silicon mould from it.
Cast red resin into the mould.
NOW YOU SEE ALL IMPERFECTIONS, IT IS THE RED. Being resin it can
finished to incredible detail and highly polished.
Now make an RTV silicon mould from the final master. Cast wax into
the mould and you are ready to sprue on the tree.
If you do not believe me take the time to mould off a polished metal
master and compare the red resin to the master moulded from. You
will be in for a surprise, red highlights the slightest mark/
If you wish to do production runs, make a pancake mould and
Frankenstein a record player for the centrifuge. A hot mould will
allow the wax to cool slowly and the centrifuge action makes for
few if any air bubbles.
SO THE POINT IS THAT THE HUMAN EYE CAN SEE IMPERFECTIONS MOST CLEARLY
WHEN THE MATERIAL IS RED. THE BETTER THE FINISH ON THE MASTER THE
BETTER THE MOULD.
The effect of red I discovered when comparing solid colour resin
pieces. The need for polishing was most evident on the red.