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Greg's Beefed'wadestruder B'struder Remix Geared Bowden Extruder

by ggroloff Oct 1, 2018
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any plans to add something to mount this? looking to mount this to a AM8.

Any 2020 extrusion stepper motor mount should work for you. The original this design is remixed from has a stl for one!

Parts for this are printing as I'm typing this... Kudo's to ggroloff for posting!

1 question: Can anyone who has done this on their Anet A8 running Marlin 1.1.9 have any details on what firmware settings need to be changed to make the stepper run in the correct direction to make this work properly?

Disregard... some googling turned up this single line change in the Marlin Anet A8 configuration.h file (in case anyone else tries this):

#define INVERT_E0_DIR <Opposite_of_current_value>

Собрал такое чудо, вроде ничего.. но на утро модель с недоэкструзией.. короче мусор.. проблема с прижимом.

Вообщем напечатал, настроил, работает нормально. Прижимной винт правда одноразовая вещь, металлический болт затягивается в пластмассу- БЕЗ ГАЙКИ! В модели требуется доработка с установкой гаек, и в боковые крепления, куда вкручиваются маленькие болты м5 и прижимной винт. Как выяснилось пружина и прижимной винт находятся не паралельно, промах в модели градусов 10. Невозможно закрепить этот эструдер на крепление для мотора, самое обыкновенное. Пришлось спилить половину стенки задней крышки. В остальном отличный эструдер. Если исправить все выше перечисленные неисправности- лучший для переделки МК 7-8. Доработайте пожалуйста Будет топовая вещь.

Do you have any other photos of how things go together or what they're for? I've been trying to piece it together.

Here's some photos:
1.jpg - are these the right bearings? from anet, they have a lip on one side
2.jpg - the spring seems tilted: the bottom has detente for it near edge, but the idler is in center

And reading your update am I understanding right that you got rid of the need for nuts on most of these? Like the two screws that attach top to bottom?


1st, i would love for there to be a mouting plate, that goes on top of the "shoulder" like many others, also id like to know if you designed those gears and if so, how did you do it
2nd i wanna know how much clereance did you allow? is it for any printer or do you need one that produces perfect prints (because i need extremely low backlash for my printer, and its tolerances are on par with prusa mk3 [Anet A8])

Thank you for this thing! Thumbs up to you!

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I also found that there no spare 623zz with the anet A8. the only one provided look like used in x and y belt. 2 for each. but no spare.

For the idler bearing I used the 13 mm u-groove bearing that the anet a8 uses for it's stock idler bearing. You shouldn't need to use any 623zz bearing. How far along did you get? I'll see about posting more detailed assembly instructions when I can.

  • Posted with 3D Geeks Thingiverse Browser App

Ive completed the build this evening and actually looking for a way to mount it on my A8 (should have looking for this before...)

Cant figure how you mounted it on yours ?

  • Posted with 3D Geeks Thingiverse Browser App

Glad you figured out how to put it together! Unfortunately the anet a8 doesn't really have a universally clear spot to secure the extruder in my opinion. Also there are many different arrangements you can go with with regards to where your filament is fed from, where your printer is, etc.. so I didn't design a mount for it. I found a cheap 2$ f-clamp at the hardware that I use to just clamp the extruder to the frame anywhere I need it to be. Much more universal for my needs.

  • Posted with 3D Geeks Thingiverse Browser App

OK for the F-clamp. But i cant figure where are the mount point on this design.

Can you upload a photo of your setup where we can see the mount point and the f-clamp ?


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I'm not at home at the moment to take a picture of the F clamp, but you should be able to see it in the YouTube video I uploaded! the clamp just holds the stepper motor to the flat part of the top shelf section. It touches the stepper motor and the underside of the top shelf. Hope that helps.

  • Posted with 3D Geeks Thingiverse Browser App


Can you provide some building instruction ?

I've tried to use the scheme provided with the original but didn't figured how to assemble all the parts.


Nevermind, a bit of brain juice was the key ;)