Originally Posted by
zephyr9900
That is a reasonable concept, David. I'd rather plumb directly into the pump inlet fitting because that leaves less sealed joints to leak, but your way involves less disruption to the current setup.
The big question to me is whether having an elevated reservoir would "blow past" the pump seals and drain the reservoir unnecessarily (if the pump seal is, say, a cup-type like a bicycle pump). I don't know how much flow resistance the oulet plumbing offers in that case.
I do keep pulling the handle while the mill is ref'ing (I purposely park the mill in a position that takes some travel to home each axis) so hopefully each axis is adequately lubricated during the ref'ing.
Randy