The first project I used my mill for, was to make a base for it. The primary purpose of the base it to provide a level and rigid platform for the mill to sit on. Having a level mill, lets me use “level” as a reference when setting up a work piece. This often comes in handy when working with oddly shaped, or cumbersome parts. Since my shop floor isn’t flat, the base also guarantees the mill will not rock or vibrate like it did when I initially set it up.
The secondary purpose of the base, is to raise the mill up to a height more comfortable for someone of my stature. As it sits, the top of the table is 41.5″ off the floor, so anything I’m working on is easy to see. The x & y axis wheels are also high enough now, that I don’t have to stoop over to use them.