Yes, i've read that recommendation elsewhere, and it really makes sense to me, but it poses 2 problems. By far the bigger one is that I have no machinery to turn it down and grind it. The second problem is a design flaw that I couldn't predict. The end of the spindle head will be flush with the bottom of the Z-plate which is about 135mm from the table. That means that at the end of the z-travel, assuming a toolholder with an end mill with 20mm stickout, it will still need another 40mm or so to reach the table. If I get the bearings 20mm closer to the spindle nose, that becomes 60mm. I could maybe build longer toolholders, or use ones with er collets, or mount the head below flush from the z-plate, but wouldn't that be a problem?