Straight spool arm mod (Neptune 4 or 3 Pro)
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Over-complicated 45° adapter to straighten standard spool arm
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- Other Printer Parts & Upgrades
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- Creative Commons — Attribution
This adapter kinda tricky to assemble, I made it in such way cause I liked the final result visually. But it works good enough:
No more enormous tension on the filament and less pain with TPU
Spool weight no longer tries to bend the portal - this is exactly why I wanted straight arm
Definitely cheaper than to print whole new arm.
Anyway:
Created to work with (or without) Central filament sensor mount for 3 Pro and 4 model from this guy
BOM:
M4x30mm - 2 pieces
Assembly order:
1) Remove all supports as clean as u can. Warning: if you printed adapter on the back like I did, supports will be a bit tricky to remove, but it's possible. You'll need a thin, flat-head screwdriver and a 3mm Allen key. First, loosen the supports by inserting the screwdriver, and then push them out with the Allen key.
2) Insert sensor mount into adapter until the internal holes align and screw it to spool arm mounting location with standard bolts
3) Install both inserts and screw spool arm to adapter with 2 M4х30 (Or tap threads before if they're too tight)
I printed it with PLA (supports on, 4 wall lines, 20% gyroid infill and 8 bottom and top layers) - sturdy enough, probably even overkill.