I had considered making it so that I can bolt the Z axis to the Y axis at different heights which, if I understand you correctly, would have the same effect as your idea. I don't like this idea so much since it means I've got to zero the axis to the part multiple times. From my experience with the smaller blades this is definitely not something I want to be doing.


Earlier in this thread I asked about drilling holes in the standard round 20mm rail to enable me to add supports. 'routercnc' said that this could stress the rails causing them to be deformed. Is this view shared by others? Not to say routercnc is wrong, I just want to be sure that this option isn't viable before forgetting it. If I used the adjustable bearings then any slight imperfection shouldn't be too big an issue?