My new machine - Guess the make!

[A_Camera]

I’ve seen your incredible machine and post. I don’t need to move.... as you said, my floor is not solid. That’s the issue.

I just mean that in my experience, moving the machine may be necessary, if for nothing else, for cleaning behind, or when something is dropped which can't be reached otherwise. I think if a machine is bolted it should have enough space around it on all sides. Anyway, the concrete pads idea may be good, but it is a bigger job. I'd still start with the simpler thing first, and would remove the castors and let the machine rest on wooden blocks or a thick wooden plank, like a beam. Maybe that would distribute the forces more than enough and would still give you improvements and stability. As it is now, the actual surface your 400kg machine is resting on is extremely small and all that mass plus the extra force generated by the movements is transferred to the floor through that small surface contact. If you increase the surface which is touching the floor you distribute the forces in a better way. But of course, you will get the best stability of you bolt it to the concrete pads, so if you KNOW you never need to move it, then it is a good idea in my opinion.

[JAZZCNC]

I'd still start with the simpler thing first, and would remove the castors

The machine isn't sat on castors, it sits on 80mm Dia adjustable machine feet.

[A_Camera]

The machine isn't sat on castors, it sits on 80mm Dia adjustable machine feet.

Thanks. Looking now on a bigger screen I can see that clearly now.