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Dueling Zero Updates

zruncho

Member

Dueling Zero is a Dual Gantry V0 mod.​


Two extruders, no compromises. Kinda like an IDEX... but rarer, and more interesting, if you're into the "outside lands" of Voron mods.

Since the original release livestream this year on the DoomCube Discord, I've added a few things, and I figured this thread would be a way to share some of those updates that haven't made their way to GitHub yet, because I don't share things broadly until I trust that they'll work for you out-of-the-box. Read to the end for a small announcement, too...

Anyway, time to put this printer to work!

(1) New enclosure added, based on ZeroPanels v3!
Take a look, as this video walks through the new (unreleased) panels and design history:


(2) Internal spool holders!​

Yes, this V0 fits two internal spools, with no loss of travel. 🤷‍♂️

The custom design uses flexure-loaded 608 top bearings with custom-fit plastic rollers on top, with 2x 608 bearings on the bottom. Should double as a convenient filament dryer, though with ABS as the main material here, that's not a big deal. But in the future, nylons and others could be interesting.

PXL_20221211_234241023.jpg

(3) ZeroFilter added!

It's VHBed to the bottom for now, until I can select and print a larger rear-of-enclosure design. Sacrifices a tiny bit of Z, but the Z is completely unoptimized anyway, so no biggie.
1672167035210.png

(4) PA tuned using Ellis' new Pattern method!​

After these changes, I did a PA tune in 6m, using Ellis' latest pattern generator. If you haven't seen it yet - check it out! It's awesome. So much better than the prior method of printing a box and measuring.

PXL_20221227_005313589.jpg

The results: :chefkiss​

The first ABS print worked out nicely, using known-good V0 profiles. Inland matte gray hides all sins (VFAs, ringing... it's like the vantablack of gray), so I'm kinda cheating here, but next up will be KVP MSIL, which is the opposite: it reveals all flaws.

PXL_20221227_022949607.jpg

There's plenty of additional stuff before this can be considered done. For example, the bottom board is foam, so that's probably the next-most-important item, to switch out to ABS.

And I want to do a complete change-out of the electronics if I'm going to do that, as well as return to the software and auto-tuning side.

But I'm excited for at least two reasons:
- "a larger V0" - basically, this is "just" a Tri-Zero Plus50 when you use one extruder, with a roughly ~170x170 square build volume - means I can in theory do full plates overnight, as well as slightly longer parts that just couldn't be done on a 120 bed like the others I have.
- there's likely to be another D0 on the horizon soon, and it's not my build. Stay tuned!

Stay tuned... I'll try to keep this updated with major improvements. Feel free to use this thread for questions and comments, too, especially once you've looked through the enormous amount of loving-crafted documentation on the GitHub, including a full design walkthough. I appreciate any motivators here, as this thing alternates between 'work' and 'intensely rewarding' in my mind.
 

SirThunderCloud

New member
Thanks for posting this @zruncho Not only is this a great write up, but the link you posted to your design doc is an incredibly fascinating read. I wanted to build one of these until I read the design doc and realized some of the stuff you came up with is way beyond me. I will still continue to follow your progress here, I think this is an awesome project.
 

zruncho

Member
Thanks for posting this @zruncho Not only is this a great write up, but the link you posted to your design doc is an incredibly fascinating read. I wanted to build one of these until I read the design doc and realized some of the stuff you came up with is way beyond me. I will still continue to follow your progress here, I think this is an awesome project.
Glad you saw it here, as I'm not sure how much engagement this forum has yet, compared to the Discord.

Yeah, there's a lot of stuff in that repo, especially the design walkthrough! I'm hoping to get a chance to return to the software side soon.
In the meantime, been just... doing a lot of printing with D0, using one extruder. I figure, I should get it awesome before adding more variables back. And it's already great to have a much larger V0 to do full-night plates with.

Here's the plate from last night:

PXL_20230102_182749739.jpg
 
Those v3 ZeroPanels are looking rather snazzy. Any chance of versions that would work with 20mm extrusion? Would love that ease of removal on my V2.
How well does cardboard spools fare with that internal spool holder system?
 

zruncho

Member
Those v3 ZeroPanels are looking rather snazzy. Any chance of versions that would work with 20mm extrusion? Would love that ease of removal on my V2.
How well does cardboard spools fare with that internal spool holder system?
The CAD is nicely parameterized, but for any version of ZP for 2020, I'd need some extrusion to test it.

No cardboard spools to test either, but the rolling resistance seems fairly low with the bearings, so I would guess that it would be fine.
 

madejackson

New member
Just found your link in discord. Love the internal spool holder. I was planning on doing them exactly like this (i already measured it in cad and realized this could work lol).
You mind sharing the stepfile? Wouldn't this be perfect to test 3D-printed bearings instead of 608? I don't have 6x608 laying around anyway.

There are a couple of designs for 3d printed bearings available already in the open source space.
 

desune

New member
I was just looking at the CAD. It seems the rear bed mount is not connected to the rear bracket at all. It's not aligned in the same way as Tri-zero, and that bracket isn't going to slide any higher, so what is the intended solution? 1673720039877.png
 
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