Firstly is the carpenter works to build the cast mould. The machine structure is not big, so I can work it by myself. I make the moulds using pinewood. It's a little soft and easy to treat. for long period casting process, it's not fitful because easy to transform after long time in high temperature and wet conditions. But for test works, it's no problem, especially after painting.

Now is the machine base part:

step1: make the frame of the base. stick the structure together and fasten it with nails.


bottom:



add more surface woods:



get the rough shape of the base now. It still has many longger wood and rough surfaces. but we have to wait until the glue dry and then take next steps.



The point of making the cast mold is to make the mold slightly bigger than the designed scale. normally, it will need about 1% bigger size because the cast iron will contract with cold after filled into sand molds. And, we can't forget to leave the spare size on machining surfaces. Normally, we need to leave about 0.15" spare size for machining.