I'm on my lunch break so I'll have to keep my post short. I was thinking you'd probably straddle it like you have but I wasn't certain. The length of the Z axis is a little concerning to me. You'll be asking a lof of the round bars to not twist or flex once it is fully extended. Also the forces on your X axes will be great. I don't think, looking forward to you proving me wrong, that you'll be able to mill anything greater than soft woods useing the current setup. I think your Z and possibly your X axis may give you too much sway.
Is there a reason you want so much Z axis travel? |