Cool I want to see how this turns out, there was another thread showing this and these motors should make a great setup.
Yea that kinda hurts alot spending three times as much, but it has been done over time and a little at a time. What sucks is a person could have a High Torque mini mill for what has been spent, but at this point its not like its not cheaper to go ahead and make the upgrade over buying a new mill.
The little BLDC will lighten up the Z axis and give a very high speed and powerfull setup. Might be time to look into better bearings in the spindle if its not already been done.
ALso adding a back brace to the back of the column & base will stiffen up that mill a ton. There is a offset to deal with but it makes a hugh difference in these little mills.
Be looking forward to seeing this mod finsihed ( BLDC motor).