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piercet

Nova Pro Compact Precision Extruder 2.0

by piercet Mar 11, 2017
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Can you make one without supports? Or maybe just where the supports doesn't merge with the models? Thanks :)

I think I can arrange that.

Excited to see this keep evolving. This will likely be a future upgrade for me. Have you considered converting to the i3 Mk2/3 style halo cooler?

I'm working on an I3 Mk2 mount for it, I just haven't finished it yet. I can take a look and see what it would take to fit such a cooler to one though. It should be pretty easy to adapt something that would fit as there is plenty of space down below it with the shroud out of the way for other options.

Have you thought any more about this? It looks like Lulzbot had the same thought for cooling, shame they didn't go with a bondtech style clamp like yours.

I'm working on the MK III now. In order to get the most cooling volume, I'm considering using a hollow aluminum tube bent in a rough "light bulb" shape (possibly 2 tubes) with vents cut in the side fed from a large squirrel cage fan. Still keepin the 30mm front fan for the extruder bore since that seems to work really well.

The plan at the moment is to use a flex cable shaft to drive the extruder, keeping the bondtech gears but relocating the motor to the main frame to save on weight. Lots of unknowns with that one though. It's getting there at least, so I should theoretically have something to post soon.

I would like to make this in a 1.75mm version. Other than the proper E3D extruder and different drive gears, would there be any other changes needed?

ideally you would want the filament feed bore narrower too, but its so short as is it shouldn't really matter. I don't have a set of the 1.75mm gears to see if the alignment is correct though. It should be in theory, but i'm not certain.

I would think the centerline of the gears would be the same. I am going to order a set of each size and check it out.

Would it be possible to get a STEP file of the piece with the filament feed bore? I will try reducing it down.

Got the parts on order. We'll see how it goes... I'm excited to have an all in one extruder that can handle flex and regular filament.

Which idler spring are you talking about, though? I'm not sure which one you mean?

These ones. https://www.lulzbot.com/store/parts/spring-6-pack-6mm-od-97mm-fl If you look at the idler, there is a latch holder that slides up and down to lock it in place. it's tension is adjusted by spring tension currently. Those springs may at some point get replaced with silicon washers, since the amount of adjustment doesn't seem to be the same range as needed by a wade extruder so far. Right now having the longer spring travel makes sense though because you can just tilt the latch up at an angle to release the idler. The slider mechanism works too, its just a pain to get all the support cleaned out of the channels at the moment. But for now it works, and works well. I do think thats an area I can improve on further though. an idler latch with a finger rest tab to make it easier to unlatch is also in the works but isn't done yet.