Just curious as to why these sets are now appearing with helical gears and filament paths?
I know there has been work and improvements to the Bondtech gearsets but I dont remember seeing anything about this helical design.
#Is there any actual benefit to these helical gear sets?
strange umbra
frozen abyss
The idea of helical gears the mesh the two shafts together is that it’s a constant amount of contact as the gears roll. Straight cut gears can have areas of high contact and low contact which could result in inconsistent extrusion.
For the filament drive teeth, the thought is that with straight teeth the filament can “walk” left to right in the channel as the filament resists being pushed down because there isn’t anything stopping it. This results in inconsistent extrusion. Adding the angled teeth puts intentional sideways force to help hold it in one place
dark barn
There is debate over whether it helps in practice. One issue is that you are applying latteral forces that want to shift the gears out of alightment, you can get wear on the extruder housing because of that. Herringbone gears would probably be the ideal solution. On the other hand mellow libra did something similar and there were lots of problems with those
you sometimes see twill patterns on the hobbing (like on cnc hextrudort). I'd definitely avoid these. I found TPU is completely unprintable because the filament twists, other filaments have the same issue but less severe
frozen abyss
Ah, yes, Sorry I should have clarified that my comment is what the ideas behind these gearsets are. Reality is likely different and I can't say one way or another...
strange umbra
I've seend a mod for big gears in the CW2 housing, are big gears (HGX Lite/Protoxtruder) becoming more common for a reason? Do they have any benefit over the original BMG small gears?