Topics created by NexxCat

@dc42 said in Is non-linear extrusion worth bothering with?:

@nexxcat said in Is non-linear extrusion worth bothering with?:

From my data and tests, I see a maximum of 2% under-extrusion when really pushing the filament, but by that point the quality of the plastic coming out of the nozzle has degraded greatly. By the time I see 4-5% under-extrusion, the BMG extruder is skipping.

IMO, 2% under extrusion at the maximum flow rate you want to use is not worth worrying about. If it was 10%, then nonlinear extrusion might provide some benefit.

It seems likely to me that dual-drive extruders may exhibit less nonlinearity than single drive extruders.

Yeah, that pretty much matches my data, but thank you for taking the time to give your thoughts @dc42, I know you are very busy 🙂

@droftarts said in Is non-linear extrusion worth bothering with?:

@nexxcat the guy who designed the Orbiter extruder did some volumetric flow tests with different filaments at different speeds. See halfway down the page, here: https://www.thingiverse.com/thing:4725897

Ian

That is a super useful link. Thank you very much @droftarts. Again, it matches my data, so I know what I've done is correct!

@deckingman said in Duet 3 JST-VH crimp terminals:

@NexxCat Yes.

Thank you! You are a gentleman and a scholar 🙂

I've had bad V wheel bearings before as well. I switched to openbuild bearings and had much better results. Get what you pay for I guess.

I'm made a new version for the Bred Air pump specifically designed to the Rapido (standard or UHF)

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It can be downloaded here: https://www.thingiverse.com/thing:5472580

This design is not compatible with the Revo as it is shorter, I am working on a new version with the tubes on the side.

Added to my list of things to test/investigate.

I'm working on a model of the smart effector which will include all of the SMD components and correct clearances, so the community (and me) can continue making awesome add-ons and such. Just started it recently and I work a whole lot so it might take me a while to actually finish it, but I'll share the f3d file which is properly broken into components and bodies, step, stl, and anything else that would be helpful.

Still very much a work in progress:
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@dc42 @deckingman Indeed. It was the stock CR-10S extruder which was ungeared with a 1.8 degree stepper. Really amazed by the quality difference the Bondtech BMG made, on both Marlin and the Duet 😃

Keep up the great work!