SIEG X2 Mini Mill CNC Build - Component Selection

Monday, May 1, 2017
Set of castings for SIEG X2 CNC Mill

In the last post I outlined my plan for building a CNC mini mill from a set of SIEG X2 castings. As the first step I wanted to order the parts for the mill itself, ignoring the steppers, controllers, etc. and make sure that I can get it up to snuff. There is no set budget for this project, so the choice of the parts is mostly based on availability (and common sense). The two areas I wanted to concentrate on are spindle accuracy and overall repeatability. With that in mind, in this post I will explain what parts I chose to buy and why.

SIEG X2 Mini Mill CNC Build - Introduction

Sunday, April 9, 2017
Some of you might remember that several years ago I used to own a Harbor Freight Mini Mill, AKA SIEG X2. At one point I upgraded the X-Y table to the LMS large table assembly and the old small table has been collecting dust under my workbench. I couldn't force myself to throw it away but couldn't find a use for it either. Until a few weeks ago, that is, until I stumbled across a series of three videos by Stefan Gotteswinter in which he rebuilds a Chinese angle plate. In the introduction to the first video he explains that he bought it as a "set of castings" and proceeds to completely re-machine the whole thing. This gave me an idea...