Instructables

Step 3: Level Up

The next platform up contains the X axis.  It is constructed similarly to the base, but with dimensions of 1.25" by 2.75", and the rails are raised up.  On the base of this level, two sockets are fixed that slide on the rails of the base.  The sockets are short segments of dowel which have been drilled out and have a piece of brass tubing in them.
 
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