MAS ETH ARCH/CAAD - 2006/07 | Student Pages Master of Advanced Studies in Architecture, Specialization in Computer Aided Architectural Design | 065-0005/6 Supervision: Prof. Dr. Ludger Hovestadt, Philipp Schaerer Chair of CAAD, ETH Zurich
Preparing the final assignment, it is important getting to know the material. It's advantages, it's limitations and behaviour.
We had to find out which thicknesses would still be strong enough, how to make holes to reduce weight and how to prepare the surface of the molds to be able to demold without destroying the molds or the final result.
So what could be better than making a nice small object out of concrete?
design
The solidworks-model with the three 2D-sketches switched on.
Female mold in surfcam.
Male mold in surfcam.
Notice the additional pattern, which has not been modeled in solidworks.
milling
the female mold after 12mm ballnose rougcut.
half rough, half planar cut
final milling result of the 12mm ballnose planarcut. the milling direction was created by using a 'dummy'-circular surface as flowsurface.
final result of the male mold after planarcut with flowsurface and a 6mm ballnose stepsize 18mm, stock -1mm
casting preparation
The female mold coated with several layers of color an a final layer of wax.
The male mold coated with color an oil.
This is a tight pair of molds, isn't it?
It was necessary to build a box of wood around the molds, because material became quite thin during milling.
But this made it possible to bring up a lot of pressure on the to molds, to prevent the concrete from flowing in between.
