Here's a small milling machine I'm putting together hopefully it's a little more rigid than the standard X2

Can't tell from the photos, what size motor are you using to drive the Z axis? (From the looks of what you have so far, it's gonna need a hefty motor to lift all that weight without hesitation). Also, is that a draw bar spindle you have built? I'd like to see the specs on that, since I have considered doing something similar to my machine. What type of motor are you using to drive the spindle? Servo, stepper, or standard drill press variety? Looks like you've got a fairly hefty design so far!

Here is a couple more pictures

Here is a little update added some steel plates to the side of the base My first test part .040 doc. 15 ipm 2600 rpm 6061 aluminum a few more pictures

The little mill is up and running I don't want to say finished because I don't think they ever are. Nothing pretty to look at but does a good job is a couple pictures The picture of the chips shows good size and shape .060 doc 20 ipm 3000 RPM 5/16 end mill