Originally Posted by
ardenum2
I don't know why people insist on flood coolant, truth be told only high performance metals need flood coolant and you definitely won't be cutting those. Aluminium can be dry machined or if you must insist use mist coolant, just enough to cool, not enough to pool, ideally something that evaporates each night.
Complicating builds with features that aren't needed is number 1 mistake, almost as bad as using leveling epoxy under the rails.
Your concrete has to be non shrink grout, otherwise it's pointless. Copying a poor design is inadvisable.