Marchant Dice router no thrust bearings?

[m_c]

Think you'll be hard pressed to any commercial or even serious Hobby CNC machine that press fit Ballnuts or run ballscrews without some form of end fixing.?? . . . It's Bad practice pure and simple and proper manufacturer wouldn't do it.!

I wasn't actually meaning specifically CNC machines! I was thinking about any machinary in general.
The fact is though, in this particular application, I doubt the steppers/ballscrews will generate enough force to move the ballnuts in the extrusion. It's quite smart, in that it does the job while reducing parts count and the amount of machining needed. Maybe not the ideal way to do it, but perfectly functionable.
Large CNC machine builders won't do it because of serviceability. Pressing something into something easily handled is a bit different from something pressfitted into a lump of iron weighing several hundred kg. There's also the manufacturing issue. A few tapped holes, with a locating boss is easier than a single tight tolerance pressfit.

I'm not defending MD though, especially given the prices. I'm just saying the methods used are maybe not ideal, but they're still perfectly functional.