This is a 30-something centimeter pot. It's close to the ideal shape for this purpose, that is wide at the open end, with convex sides tapering to a flat base. The base of the plastic should be completely flat with no ridges. I can't tell you what will happen if it's not, I just like to see the steel plate mounted flush against the plastic.

On this press, you can see the ram is a lot longer that the Loadmaster, and so this press cannot be mounted on the base shown previously.

This size is perfect for this press, as there is no movement whatsoever of the base while reloading.

Main difference here is that the base is smaller, weighs a lot less, and the plate is octogonal. I never had time to get a circular plate cut, so I took a square and cut it with an angle grinder. It took a review of basic geometry to draw the outline of an octagon inside the square for cutting.

This base is almost color coded to the press, so if you have an Orange Lyman, for example, you can match the base color to it. One can of spray paint was just enough to complete this. If you want a perfect match to the press color, take the press to a specialist paint shop and get them to mix paint that's the same color for you.

To paint the plastic, use universal undercoat, and then spray or enamel your color on.