I'm new here and don't want to hijack your thread. I hope you'll excuse my question which is related to your thread. I'm planing on making my first CNC router with the initial goal of cutting woodwork joints. Until I read your post I was considering making a machine with a spindle mounted on a bearing to allow it to rotate from being vertical or horizontal. My thoughts were that I would find it easier to clamp and align my workpieces horizontally to a raised work surface on the bed than vertically. This would also allow me to machine joints in the ends of long workpieces (2 m in length for beds for example). Have you ever seen a spindle like this and am I mad to consider it?