can see how I have drilled the back plate for the panel with a grid of 1/4" holes.... As I
fill the cavity, these holes flood and act to hold the panel tight to the back plate.
With the side molds done, I then place the
front and back panels that I cast back in their
molds. To keep them in place I made two
plates with threaded rod jack screws that
apply uniform pressure. Now I can pour
material to cast the first side.
