Bottom of lazy susan

Just made a basic mould for the concrete to set in, Measuring the exact dimensions to and using laminated MDF so I wouldn't need to apply a release. 

I inserted a piece of wood which I cut a little bigger than the transformer so when the concrete set there would be a cavity for the transformer to sit inside. I also laminated the wooden insert for easy removal. The wall plugs are used to leave spots to drill a plywood cap to cover the transformer.

I inserted two pieces of clear plastic tubing extruding the mould. This was done to leave a cavity for the cable leading to the transformer and the other for the power plug. 

Just used a metal ruler to hold the tubing in place while it was drying. Then waited overnight to dry. Before releasing it from the mould. 

To my surprise the concrete released without any effort and nothing was stuck to the walls of the mould. The lasy susan mechanism was also attached without any problems. I placed wall plus in the top of the concrete as it was starting to set to attach the mechanism. 

Cavity was a success, leaving me with plenty of space for the transformer to fit. 

Mechanism in action!