That's valuable advice. Thanks Mark!
That's an interesting idea. I get what they are doing. You tilt the rack and the wheels make contact. Without the tilt it is perfectly stable on the ground.
Something to think about. Thanks.
I have two milling machines. One sits off the ground on solid blocks. The other one (a much larger CNC machining center) sits on six very heavy duty adjustable feet. They are probably rated at 10,000 lbs each.
I have machinery moving skates that can move both of them. You just lift them with a huge machinery moving prybar (here's an example: Hand Trucks & Dollies | Dollies-Lever & Pry Bars | Vestil Lever Dolly Pry Bar PLB-6 - 6'L Wood Handle 4250 Lb. Capacity | 271462 - GlobalIndustrial.com) and you can move it anywhere.
That said, I am still considering the idea. Nothing in the backyard is level due to grading for drainage. Which means that moving the setup would be a pain because you'd have to re-level it every time you put it down. So, definitely not an every day thing.
Maybe I'll make a custom attachment to turn it into a bar during backyard gatherings and just leave it where it lives. Who could argue with that?