I have for a long time wanted to do a little mix of foundry work to build a small/mid size bench top mill so far here is what I got.

Base and supports are Cast aluminum all other parts will be cast aluminum
Column is 4x6x1/4x24" 6061 rectangle tube later to be filled. I went this route as it was to be the easiest ...
20mm linear rails throughout X rails 23.75" Y 15" Z20.5" I get the rails free from work when systems get upgrades some are like brand new, so I have a small stock pile
still making changes and decisions as I go so I am constantly adjusting cad.....

This weekend if its not snowing or raining I plan to make the patterns for the X axis bed way and table top. I am still trying to decide is it want to cast "T" slots as. The slots require making sand cores hmmmm.

anyway here is a few pics nothing to special Enjoy