Hectic! But nice.

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gchristopher
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Re: Hectic! But nice.

Postby gchristopher » Wed Apr 26, 2017 5:06 pm

Okay. I was just starting to get worried, since the last email said "We expect it to be a matter of days, not weeks" and since then they've been quiet and Zesty_Lykle hasn't been on the forums this month.

I hope it's going okay for them!

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mhackney
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Re: Hectic! But nice.

Postby mhackney » Tue May 02, 2017 12:26 pm

Yeah, I've had a pre-production one for a few weeks (since before MRRF). I am getting the production parts soon so I can comment on the actual production unit. Now that we've sorted the retract speed issue and I'm able to do retracts up to 25mm/s I am getting some nice looking parts. It really is a compact little bugger and well designed from a mechanical and aesthetic perspective. Not difficult to mount in an effector either. I'm thinking about painting my extruder coupler red/white like a barber pole so I can see it turning! It really moves, especially during retracts.

Sublime Layers - my blog on Musings and Experiments in 3D Printing Technology and Art

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626Pilot
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Re: Hectic! But nice.

Postby 626Pilot » Tue May 02, 2017 6:01 pm

How are you mounting the stepper? Can we see photos of how everything is set up?

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mhackney
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Re: Hectic! But nice.

Postby mhackney » Wed May 03, 2017 8:45 am

This is on a K250 delta but you get the idea. On an RMAX you can't use the back slot of the tower but you could use the side slot and maybe a printed bracket to wrap it around if necessary.

I still consider the Nimble to be experimental. It will have to demonstrate itself in the long haul over many types of filaments and prints. However, I have completely eliminated Bowden systems from all of my single extrusion deltas and the Nimble allows doing that on the smaller printers like the K250 and Mini Kossel. The difference in print quality with direct drive more than makes up for the loss of Z height and the theoretical "underslung vs over the effector" mounting. The Rostock MAX is a beefy enough printer for the Bondtech BMG or E3D Titan Aero direct drives. I can vouch for both of these in the reliability and "superb print results" department. The Aero is producing some of the best PLA prints I've done. See part below.

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Bondtech BMG
IMG_7697.JPG


E3D Titan Aero
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The part has 100s of short segment moves and hops to print the teeth. The Bondtech BMG extruder does a remarkably nice job but I get a string here and there (nothing significant). But this part was flawless and it was the first part I printed with the Aero. I think the integrated extruder/hot end with its significantly reduced path helps but it also harkens back to my "Kraken days" of water cooling. I always got superb results with the Kraken when single extruding too and I attributed that to the more efficient water cooling reducing the temperature transition zone. Interestingly, the Aero has a huge heat sink and monster fan so it might be doing something similar.
FullSizeRender 76.jpg

Sublime Layers - my blog on Musings and Experiments in 3D Printing Technology and Art

Start Here:
A Strategy for Successful (and Great) Prints

Strategies for Resolving Print Artifacts

The Eclectic Angler


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