Answered Ok, super weird ABS issue.

Alright so I (apparently like an idiot) have been trying to use the Robo to print ABS. I am running between 230-235 at the hotend and 90 at the bed. I had a lot of issues with bed adhesion because well frankly the bed isn't great for ABS. I threw together a nice little enclosure out of PIR foam board, and mounted the spool on an external holder.

Now I have great bed adhesion, but I am getting just bizarre issues right around later 20-30 I think, and it's very consistent.

I am attaching some pics.

 

That looks rough. Did you get those issues with pla too? Looks like a X or Y problem. Great place to look is
https://www.simplify3d.com/support/print-quality-troubleshooting/#not-extruding-enough-plastic

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I print with ABS only and use abs slurry on the bed. NEVER had an issue since, and I can better smooth out my print over PLA.

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Calif, garage, makeshift enclosure with foam board, never covered my filament. BTW- Makergeek has awesome prices if you don't care what color you get.

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My makeshift ABS box


This is my ABS/ACETONE mix. Consistancy of milk. 70c on the bed before I apply the slurry


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Total enclosure while printing. I use an old phone with IP Webcam app to keep an eye on it.


App works really well. I am starting my new project- Voltron. All five lions. 150% of original size, from Yeggi. Will be my biggest project. This is just the front and back chest, 20hr print. I expect each lion to be about 120hrs.


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I've never seen an instance where an ABS print would be preferable to a PETG/PET+ (if you can find the latter) print.

I do agree with Makergeeks being a pretty good supplier if you DGAF about the color of the spool you get.

 

I use PETG more for parts and tools as they have more overall strength. I Use ABS for things like vases, figurines, etc.. Being able to use acetone to smooth out my prints, fill minor cracks, is more advantageous than PLA or PETG in this regard.

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No warpage. Works every time. HOWEVER, I did wake up to a midair print so it stopped extrudruding around hour 5. Have to look in to that..


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Ok, so I got really busy with various unrelated things, but I did manage to sort out what was going on. I have a fully enclosed thermal box (foam board). The issue seems to be as you go higher, the heat increases pretty dramatically due to it being trapped inside the box and not circulated. To resolve it, I opened up a bit of the top, to let the heat partially dissipate and it seems to have solved it.

I may fix it a bit better by installing a PC fan to circulate air to get a more even thermal envelope, rather than the uneven heated chamber I have now, but now I know *what* to tweak.

 

I am starting too see your logic, Mr Spock. I grabbed some PETG from Makergeek with some PLA and dang if it worked out perf first print. I might shift that way once I use up the 10 rolls of PLA and ABS I still have. Voltron Lion takes forEVER to print.

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Makergeek has the discount of 4 rolls, their color of choices, for 60$. ABS, PETG,or PLA. I've used all 3 and came away with really good results. I am starting to agree with PETG over ABS though . Still have 3 rolls ABS to use up, but the PETG has come out really good so far.

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