How to make Almost Anything

Week 6: Molding and Casting

0. I need a moduled pot for growing moss

Build 3d model, and find out the mold cannot be one part, should be two parts.

1. Milling from Shopbot

The dimension is over the wax dimension, and I prefer a certain roughness of the surface, to eventualy make dry stone have a rock texture. I use pink foam for milling.

I use 1/4" flat endmill for flat part, 1/4" ball endmill for the domed central part.

2. Make flexible mold

3. Cast final piece

 

4. Process revise

a. Add gesso on the mold and cast with OOMOO

b. Add lasercut 3 ply chipboard to sandwich the two rubber molds in between, fasten the edge.

c. When mixing and stiring the dry stone, get the air bubble out.

Moss growing on drystone pot!