Got the rails mounted on the milled gantry, worked really well. I've tightened them down but not yet aligned straight, for that I will mill up a couple of precision setting tools.

I then finished the Y bearing plates and bolted everything together. Everything slides very smoothly with bolts tight, very exciting! The Y bearings have the same smooth action across the entire length with no hint of any variation so I presume the gantry milling was sufficiently parallel.

Click image for larger version. 

Name:	IMG_20191224_160338 (Large).jpg 
Views:	2448 
Size:	362.8 KB 
ID:	26939 Click image for larger version. 

Name:	IMG_20191224_160649 (Large).jpg 
Views:	2431 
Size:	320.0 KB 
ID:	26940 Click image for larger version. 

Name:	IMG_20191224_160749 (Large).jpg 
Views:	2428 
Size:	94.1 KB 
ID:	26941

One thing I need to do before too long is hit the corners of these plates with a sander, they are razor sharp and I keep bleeding all over the lovely shiny parts.