This came up on my YouTube today.
The channel is mostly woodworking with a bit of RC and metalwork.
Good apparatus but don’t forget to put shaft wipers on those Linear Bearings because the balls will cease once some dirt and cuttings build up on the shafting.
If you want to avoid cleaning out the bearing blocks occasionally, replace the ball bearings with Simplicity Bushings or bronze bushings.
(I had to make a design change on a vacuum former with reciprocating carriages)
The Linear Ball Bearings are designed for years of constant use.
A set of bushings made of bronze would last you quite a while at a fraction of the price.