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Athena Idler End Assembly
Materials and Tools
- DO NOT REAM the small holes in the rectangular pockets where the limit switches are mounted (see last steps in this page for clarification). The screws will themselves form threads in the plastic (plastiform threads) when you attach the switches to the idler ends.
- The limit switches are held in place with both screws and epoxy. It's imperative that the limit switches do not move once attached to the idler ends. The printer will not home to the same position if switches are loose, causing endless problems with printer calibration.
- The idler is best assembled in steps, inserting a piece, advancing the bolt and then inserting the next piece. The order of items on the bolt, starting from the hex head will be idler end-washer-608zz-608zz-washer-idler end-washer-nut:
- Repeat with remaining two idler ends.
- If linking boards (210mm x 42mm x 12mm) do not have pilot holes drilled in them and you wish them to, follow directions here before proceeding. Make sure the short (210mm) linking boards are being assembled to the idler ends!
- Repeat with another linking board on the other side of the idler end. Make sure the last linking board is attached to the correct side of the idler end so that one of the idler ends isn't upside-down in the final assembly!
- Prepare six M2 x 12mm screws with washers on them for securing the limit switches.
- assembled limit switches into an epoxied switch pocket with the switch's switch tab opening towards the guide rod (see picture). Working quickly, secure the switch with a pair of M2 screws. Repeat with remaining two switches.
|Tandem assembly Athena Navigation|
|Green indicate workshop tasks|
|Athena Printed Parts Glossary|
|Assembling hot end|
|Soldering and tinning|
|Drilling Pilot Holes (Optional)|
|Person 1||Person 2|
|Connecting Rods||Epoxying Magnets|
|Motor End Assembly||Idler End Assembly|
|Extruder Drive and Spool Holder||End Effector|
|Firmware and Calibration|