30 lines
1.9 KiB
Markdown
30 lines
1.9 KiB
Markdown
# Off The Shelf Drag Chains for 2.1
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Note: Tested with 300mm 2.1 build only.
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## Why
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* Drag chains with a snap open side are a joy to work on.
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* It looks awesome.
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* Looming up wires makes them harder to access.
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* I hate tape chains.
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## BOM
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* Some M3 screws
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* A few M5 screws that are a couple millimeters longer than the M5's on the gantry. You'll figure it out.
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* [3x Openbuilds 10x15mm 18mm radius Drag Chains](https://openbuildspartstore.com/drag-chain-cable-carrier/)
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* All these stls
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## STLs
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File | Note
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---- | ----
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x_carriage_frame_right_remodeled | Parametrically driven remodel of the right toolhead without the wire tray. The through-screws are modeled like the original stl, but they seem pretty tight from my printer. YMMV, you might need a tap or just start working out more.
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x_carriage_dragchain_anchorpoint | You screw your drag chain's floppy end to this side.
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x_carriage_wire_cover | Cosmetic wire wrangler interfacing the drag chain to the X carriage. Mounts with a short M3 screw.
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xy_drag_chain_bridge | You screw your drag chain's floppy end to this side. Wires go through it and up into the Y chain.
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a_corner_wire_guide | Covers your wires around the A corner. Keeps them from chafing against the rail and frame, while keeping them tidily away from the belt. Also, you screw your drag chain's floppy end to this side.
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lower_drag_chain_mount | Mounts to the rear lower frame. You'll need to cut an L shaped slot into your bottom panel. Also a great spot to run your bed and heater wires down through. Move this on the rail until you get a little tension on your Z chain. That'll keep it tight and it will look awesome.
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## Known Issues
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* I haven't accounted for the toolhead doors yet.
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* X carriage screws are a little tight. Probably "won't fix."
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* A corner guide could be a little wider in critical places without interfering mechanically with the printer. All my wires fit, but yours might not.
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