安裝座，主軸外殼

The dovetails on this casting lined up perfectly with my old Z-axis, saving me a ton of time on alignment. It feels just as solid as the original and the mill is running smooth again.

The Z-axis dovetails are machined clean enough that the spindle housing slid on without any filing or fuss, which saved me a whole weekend of frustration. This casting feels solid and weighs exactly what you'd expect for a mini mill upgrade, so no surprises there. It's a straightforward swap if you'

The dovetails locked into place on my mini mill with zero wobble, which was my main concern. Machining the castings was straightforward, and the Z-axis setup feels solid now.