Work in progress

These are plaster cast feet. These are positives.
Plaster feet are
coated with special oil. 

Then, each plaster foot will be placed at the bottom of these boxes.
These boxes with plaster feet are moulds for negative plaster casts.

This is negative plaster cast, which is similar to the final negative cast.
Then, from the negative plaster casts, positive rubber casts will be made.
From the rubber positives, the final cement negative casts will be made.
This is a cement
mixer. 

When cement is set, slabs will be taken out from mould.
These are the final negative casts.