Yet Another Anycubic i3 Mega Extruder For Flex (YAAiMEFF)
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Anycubic i3 Mega extruder modification to handle flexible filaments. It uses an almost full bowden passthrough…
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Informacje o modelu
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- Printables
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- Anycubic Parts & Upgrades
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- Creative Commons — Attribution
Anycubic i3 Mega extruder modification to handle flexible filaments.
It uses an almost full bowden passthrough approach and adds variable tension adjustment.
It's easy to print and to install.
Material requirements:
4mm-2mm teflon bowden tube and M10 bowden fittings (the inlet one is optional) like this one: https://www.aliexpress.com/item/3D-printer-accessories-V6-fast-connector-M10-pneumatic-quick-joint-bowden-tube/32880549566.html
U604ZZ U-groove bearing: https://www.aliexpress.com/item/10Pcs-lot-3dPrinters-Extruder-Parts-U-groove-idler-pulley-belt-pulley-bearing-U604ZZ-u-ditch-604U/32818240686.html
M3 screw and nut for the tension controller.
UPDATE:
I've been using it since a bit before I uploaded it here (ABS) and I have to say it is working flawlessly. I only have to adjust the tension for each filament type (80-90% tension for flexible and 15-25% for rigid filaments). One really big improvement from the stock one is how easy it is to change the filament now, because the extruder wheel takes it and routes it perfectly. Furthermore, if a inner PTFE tube is added it is possible to attach there the stock filament detector without the magnetic support.
I have added a knob grip to allow the adjustment of the tension by hand, without having to use a wrench.
Print Settings
Printer:
Anycubic i3 Mega
Rafts:
No
Supports:
No
Resolution:
0.2
Infill:
25% for ABS, 100% for PLA
Notes:
ABS or PLA.
Print with no support but add a custom support on the space for the grooved bearing on the lower piece (see CURA attached pictures)
For ABS use a generous brim (5-10%) to avoid warping.
Post-Printing
File the filament holes with a 2mm drill bit or with a round file so the filament can go through without problems.
Use the open windows on the sides to ensure that the bowden tubes go until the end of their holes.
How I Designed This
Autodesk Inventor
Based on the behavior of the original extruder and other alternatives I decided to design my own to avoid flex filament misguidance and add tension adjustment.
The baseline was to try to ensure the maximum amount of PTFE bowden tube on the inside of the extruder to minimize friction, while trying to fill all the gaps, so the filament does not have a scape route.
Category: 3D Printer Extruders