The first sand casting test is a simple one:
To hold it I have made a box on the CNC using some custom Gcode:
This box fits the casting really well (the peak of the cap had to have it's own cut out, this keys the box lid as well:
It's quite plain on the outside:
The box gcode was generated using a Tcl script, and I'm going to create a parametric top level script that drives the lower level gcode scripts so that I can generate boxes like this of any dimensions just by running the top level script.