Making heavy machinery stands mobile?

Im just about to bring my AL320G and RF45 out of storage and set them up in the garage. While im doing that I will need a new mill stand, and after some suggestions in another thread I think I will build one out of a frame and a standard 650mm wide 5 drawer tool box.

One of the things that would be nice to have is the ability to be able to move the mill and lathe to clean behind them, or sort things out. So I am considering building in some 2" low profile castors into the units. I plan on recessing these up into the frame, and using hockey puck levellers on the corners for supporting the machine/frame and to be able to take the load off the castors when the machine is in use.

Leveling feet will probably use M16 hardware and a nut/washer setup to adjust the machine height, before being locked in place with another M16 nut and washer from the top.

If all of this works well enough for the mill then I will probably do the same again with the lathe, but use a 1m wide tool box for that, along with two sets of castors.

Anyone see any critical flaws in my dastardly plan?


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