• Insert the previously cut Leg into the Foot Bottom and loosely add the 3/4″ (M4 X 20) screw and lock nut. This will get tightened during the final step.


  • Use the matching Bottom_Corner and Lock_Corner parts or BottomM_Corner and LockM_Corner parts. The direction of the letter will match when assembled of the correct set.
  • Optional but suggested, add some glue to these parts before screwing together for added rigidity.
  • Put the screw 3/4″ (M4 X 20) in from the corner piece and the nut into the lock, and hold with a socket or pliers. This screw can get snugged down.


  • Assemble the corners on to the Bottoms, add the screw 3/4″ (M4 X 20) and nut (nut goes in the hex shaped hole).
  • Leave these screws loose, they will get snugged up in the final step.
  • Repeat this for all four sets.


  • Use the 1.25″ (M8 X 30) bolts, lock nuts, 608 bearings, and the Roller or RollerM.
  • Nuts are best facing towards each other, unless you plan on adding mid span supports then the other way could get you some extra clearance.
  • These can get snugged up, don’t crack the plastic, just snug.
  • Do this for all 4 sets.


  • Use the 2.5″ (M8 X 65) bolt, run it through the Roller Plate (or the dual plates).
  • After the Roller plate add a 608 bearing.
  • Add the plate and bearing stack into the Roller from the single bearing side. Only part way
  • Add a Bearing into the center of the roller, and thread the bolt the rest of the way into the roller.
  • Pay attention to the direction of the plate, the stand offs should face the bearings, and the extra notches should face the single bearing.


  • The nut for the 2.5″ (M8 X 65) bolt should be left extremely loose almost touching the roller but not all the way.
  • Make sure these nuts don’t interfere with the small nut slots, if they do put the small nuts in now.
  • Put all the rollers on their rails and make sure they all slide equally well. There should be tension when inserting the rail and all the bearings should touch.


  • This is showing the pairs for the X and Y axis. It should be one Roller and one RollerM. It does not matter which way the gantry rail angle is facing as long as it is facing the same as its counterpart.
  • Roller and RollerM are just a mirrored set, made to help with printer deficiencies. Each axis gets one of each and the need to look mirrored (angle on the same side).
  • When using the optional Dual plates, the long side should face X0 Y0 (nearest left corner)


  • Add your Y rails and rollers to the corner assemblies (front to back).
  • Make sure the angled belt brackets face out, and the angles are pointed towards each other.
  • Lay a Spacer_Corner on the rail.
  • Lay the X rail and rollers on next (Right to left).


  • Put on the Top_Corner pieces.
  • Make sure the brackets are facing out, and the angles towards each other.
  • Add the four screws 3/4″ (M4 X 20), and nuts.
  • Leave the screws loose.
  • Assemble all the corners.


  • Set all your outer dimensions from corner to corner, Usually this is the same as your x and Y Rail length that was entered into the calculator.
  • Lightly snug up the Top_Corner screws trying to keep the spacing even on all four sides of the part. The parts do not require very much torque the design holds the rails well.
  • Double check your dimensions, Be as accurate as possible.