Y Axis Tensioner

Tightening the Y axis pulley is pain since you basically have to pull the entire Y stage off the X axis rods.  I suppose this isn’t a bad thing since it forces me to tighten down bolts and oil the various rods.

I designed this Axis Tensioner for the Y Axis last night.  Both parts are included in the STL file.  I’ve included the Google Sketchup file for anyone who wants to help improve the part.  It may be a little disorienting as one of the parts is laid on it’s side to be printable.

• The larger part fits around the edge of the Y axis stage.
• The smaller part fits under the Y axis pulley, around the M6 nut.
• Drop an M3 nut into the slot in the smaller part.
• Insert an M3 x 16 bolt (preferably with a washer) through the slot in the larger part.  Rotate to tighten/loosen.

Here’s the Axis Tensioner Y on Thingiverse.  Thanks to unrepentantgeek for his Sketchup version of the Cupcake CNC which allowed me to create the screenshot.

Let me know how this works for you.