Router Table - For rounding over the MDF battery mould edges.

Same frame as used for the saw-bench, but now an aluminium sheet holds an inverted router:

First sand the sides of the box to make uniform. I printed a 3D printed sanding block, printed to the shape of the sides:

Round-off the vertical corners:

Then round-off the top corners

Next step is to 3D print the fillets for the bottom and epoxy these on.
Then print another sanding-shape for sanding the sides to be uniform.

Finally, fill the holes/gaps and coat the MDF with epoxy to make a hard surface for sanding and polishing.