INBXX Assisted Filament Loader – Budget Remix
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1,71 € – 2,09 € netto (bez VAT)
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- Masa podana przez autora
- 31 g
- Czas druku podany przez autora
- 1,65 godz.
- Materiał u źródła
- PET
- Materiał wyceny
- PETG
- Drukarka wyceny
- Bambu Lab P1S - 0.4 nozzle
- Proces wyceny
- 0.20mm Standard
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Zapisane na tym urządzeniu.
INBXX assisted filament loader remix: off-the-shelf parts, no custom PCB, wire up a motor and microswitch.
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Aktualizacja u źródła:
Informacje o modelu
- Źródło
- Printables
- Kategoria
- Other Printer Parts & Upgrades
- Licencja
- Creative Commons — Attribution — Noncommercial — Share Alike
A motorized, switch-triggered filament loader for your INBXX setup. It’s a remix of the original assisted loader for INBXX (linked in the remix section), redesigned so it needs no proprietary PCB and uses common parts from Amazon. Wire up a small gear motor and a microswitch and you’re done.
Why I remixed it
The original hardware costs around $35 for 4 sets.
It uses a proprietary PCB and parts that are hard to find off the shelf.
This version uses common off-the-shelf parts. I bought everything for 8 loaders for about $58, with spares left over.
How it works
Feed the filament into the entry port and the microswitch triggers the motor.
The motor spins a brass drive gear that grips the filament and pushes it forward.
A hinged lever with a bearing holds the filament against the gear.
The filament exits through the angled port block and into a Bowden tube, which runs to your INBXX/MMU path.
Model details
Orange hinged lever: The curved arm swings on an M4 screw hinge at one end. A single U-groove bearing sits on a second M4 screw, which acts as the bearing shaft, and presses the filament against the drive gear. The contoured top is shaped to be easy to push and guide by hand.
Black base: One body holds the motor, gear, microswitch and hinge, so the whole loader is a single compact unit.
Motor pocket: The N20 gear motor sits in a cradle on the underside and is clamped in place with a single screw.
Printed shaft adapter: A small printed sleeve takes the motor’s 3mm shaft up to the 5mm bore of the brass drive gear. It’s the adapter from the original Bowden Speed Loader (credited below).
Angled port block: The filament exit and tube mount are tilted upward so the Bowden tube leaves at a gentle angle. The block has several ports and cutouts for the coupler, tube and clips.
Switch mount: The microswitch has its own pocket, positioned so the filament presses the lever as it enters.
Printed in two colors in my build (orange lever, black base), but any colors work.
Bill of Materials
Motors
feeder gear
Bearings
ptfe coupler
microswitch
Per loader | For 8 loaders | Part |
|---|---|---|
1 | 8 | N20 gear motor, 6V, 500 RPM, 3mm shaft |
1 | 8 | 40-tooth brass extruder drive gear (5mm bore) |
1 | 8 | 3mm to 5mm shaft adapter (printed, see credits) |
1 | 8 | Micro switch (SPDT hinge lever) |
1 | 8 | U604ZZ U-groove bearing (4x13x4mm) |
1 | 8 | 4mm OD Bowden tube coupler and collet clip |
1 | 8 | Length of Bowden tube |
2 | 16 | M4x30mm socket head cap screws (bearing shaft and lever hinge) |
2 | 16 | M2x8mm socket head cap screws |
1 | 8 | M3x4mm button head cap screw |
1 | 8 | Hookup wire |
1 | 8 | Power source (see below) |
Power options: use a step-down converter set to about 6V, taken from your printer or machine supply, or a 9V battery, which also works.
Multi-packs I used for 8 loaders (the rest are spares): 1 pack of 10 gears, 9 motors (a 3-pack plus two more 3-packs), 1 pack of 20 micro switches, 1 pack of 12 bearings and 1 pack of 20 Bowden couplers.
Assembly
Print all parts, including the shaft adapter. Remove any support material from the ports and pockets.
Fit the shaft adapter.
Push the adapter onto the motor’s 3mm shaft. If it’s too tight, scale the adapter up slightly or adjust your extrusion multiplier and reprint.
Slide the brass gear onto the adapter. If the adapter is too big for the gear, spin it against sandpaper or an emery board until it fits.
Seat the motor in its cradle on the underside of the base. Fasten it with the M3x4 button head screw.
Mount the microswitch in its pocket with the two M2x8 screws. Don’t overtighten them.
Install the bearing on the lever. Slide the U604ZZ bearing into its slot and pass an M4x30 screw through it as the bearing shaft.
Attach the lever to the base with the second M4x30 screw as the hinge. It should swing freely and press the filament lightly against the gear.
Install the Bowden coupler in the port block, push the tube in and add the collet clip.
Wire it up: connect the power source to the motor through the microswitch, so the motor runs only while the switch is pressed.
Test: feed filament into the entry port. The switch should trigger, the motor should run and the filament should be pulled through to the tube. If it pushes the wrong way, swap the two motor wires.
Credits
Remix of Assisted Speed Loader for INBXX Series on Printables. All credit to the original designer for the concept and base design.
The 3mm to 5mm motor shaft adapter comes from Bowden Speed Loader for Prusa XL and CORE One on Printables: https://www.printables.com/model/1219294-bowden-speed-loader-for-prusa-xl-and-core-one-and