So just finished fixing the x rails onto the resin bed, 3 weeks after pouring. Many ways to fix the rails I read on the forum. I went for a straight edge (Probably not) ally 50mm box section. Clamped to side of bed then spaced 30mm to side of rail using lengths of 30mm diameter bar. This positions rail in centre of 80mm box section (30mm + 20mm rail +30mm =80mm) Clamped rail, drilled and taped each hole then moved along a hole at a time. Second rail repeat process and checked and adjusted gantry, to make sure smooth running and no nasty noises. Checked with DTI.
We will see what its like when I cut something in the future. Click image for larger version. 

Name:	IMG_20170216_202057[1].jpg 
Views:	843 
Size:	259.2 KB 
ID:	20826