Upper Plates (2 pieces) 

These CNC milled aluminum plates are the pieces that the top guides attach to and they help ensure that the entire drive train is precisely aligned. (Replace part number FT17 and FT 18. Eliminates FT3.)

New features include:

• Additional tapped and pass through holes have been added to separate the adjustments of the vertical (bed plate) and the horizontal (gantry) guide systems. You can now align the bed plate without impacting the gantry alignment or vice versa. 
• A pair of all metal, bolt on, idler pulleys for the Y-axis.

Due to the size of these pieces, anodizing them would be quite costly, therefore we only offer the pieces of this kit in the shiny (non-anodized) finish, which may show minor tooling marks. 

Note:

The Y motor mount pieces are fully compatible with genuine Astrosyn style stepper motor dampers.  Chinese clone dampers with the protruding pins will need to have the pins shaved flat before they will fit correctly with our parts.

Since these pieces have been extensively modified from the original melamine pieces and have tighter tolerances built in, we highly recommend buying the whole drive train kit (Bed platform, Upper plates, and Single drive Z base plates) for best performance.