BobsCNC Evolution Series - Page 113

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Using a 13mm wrench, raise the left lower Bearing to the corresponding
mark. Using your fingers try to turn the left lower Bearing. The Bearing
should only move if the Gantry moves. Once the Bearings are snug against
the Rail, tighten the Locknut with a 10mm wrench and Phillips Head
screwdriver as shown.
NOTE: There are
access holes located
at the bottom of the
Sides of the X Frame
to help you tighten
the Bearings.