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Bondtech BMG direct drive extruder for GRR Neo

by Mechanotronikum Jul 18, 2018
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Hey! Nice Job! How does this upgrade perform? Do you see the additional weight in your parts?
It's really amazing what upgrades to my upgrade were done :-)
The Upgrade to the E3D V6 was really the best thing i could for the NEO i never had any problems since!
Now that my NEO has lots and lots of meters of filament turned into magic its time to make a real Makeover I am planning to give him maby your upgrade, and some TMC2130 heated bed is allready there for 2 years :-)
Thank you for sharing you may consider to share it as a remix of my upgrade so everybody can find it :-)

Update: now that I have replaced the X and Y steppers and finally have a vibration free (and more silent than ever) printer, I can confirm that i have no measurable effect caused by the additional weight of the extruder - the test parts I printed show exactly the 0.1mm height error of the glass plate I print on but no measurable bending of the steel rods at all.

Perfect! I am currently working on a version for the e3d titan. And some other makeover stuff.
I will share it in two weeks or so

Dankeschön :-)

Yes, your V6 Neo extruder was one of the first things that I did to my Neo - and it does wonders indeed! I did some minor redesigning though (rounded off some parts and the inside of the airflow, added some small bearings to keep the belt from rubbing over the plastic edges of the hotend and replaced the airflow with a 90° one with a magnetic holder (see attached files; for the airflow you need a 20x7 mm piece of sheet metal and two Ø5x7mm Neodym magnets).

The only thing that was IMHO even better was to replace the Printrboard with a Duet Wifi, together with replacing the linear bearings and their rods with Misumi parts. But after a lot of trying I finally came to the conclusion you really want to replace the Y (and if you dare also the X) motor as well to get the most out of the Duet since the rather overdimensioned and high-inductance original motors (at least mine...) tend to vibrate like hell if you try to run them faster, no matter what you tell the stepper drivers...

To your question: As far as I have tested the direct extruder for now (currently my Neo waits for the stepper I plan to use as X drive that should come within the next days), i have absolutely no negative effects at all - all the additional weight did was helping a little in reducing the vibrations I mentioned...

How did you include the heat bed? I have one (5mm aluminium plate + fitting silicon heat bed) lying around for a good while but did not yet find a really convincing solution to put that one onto the z axis yet...

I have added this part as a remix as you requested.