New version fits inside a 350 x 350 octagon, which is surprisingly small even when compared to the old test frame which was 260 x 370.

Comparing the old with the new

Another angle, will end up about the same height, maybe a fraction less

Close up, still plenty of space to add various things and make changes in the future.

According to CAD, a full 3.25mm hardox shell would be 7.2kg, just a fraction too heavy, replacing the top lid with 1mm stainless brings it down to a healthy 5.4kg, which leaves a good 1kg for some nasty teeth to weld on