
You might recall that last week I took delivery of a brand new Grizzly G0463 Mill/Drill, also known as Sieg X3 or Sieg Small Mill. Once the mill was thoroughly cleaned, lubricated and put back together it was time to tram the column and the spindle. This step is often missed by new machine owners, but without proper alignment the mill will newer be able to produce accurate work. For instance, if the column is not square, center of the spindle (and thus the cutter) will shift in the horizontal plane as the head is lowered, so the dimensions will be off. On the other hand, when the spindle is at an angle, the holes won't be perpendicular to the table and fly cutters will produce concave surfaces. Fortunately, tramming the X3, although a bit fiddly, isn't very difficult and doesn't require any exotic tools. In fact all you would need is a machinists square, a dial test indicator and a way to hold it [the indicator].