Working on keeping track of a few interesting posts that I've found around the internet..
I'll be throwing together some links to random bits of information with respect to 3d printing - Links to reddit posts, printables/thingiverse/thangs links for future tracking, all because my personal notes and reddit histories are not very useful for tracking down information!
General 3d printing guides:
https://teachingtechyt.github.io/calibration.html#firstlayer
How to change hot end - 3D printer model https://m.youtube.com/watch?v=OzRAVkXjw3I
3d design guides
https://www.youtube.com/watch?v=Hna4V7-FJ08
Drybox ideas that aren't on printables/thingiverse
https://3d-print-files.com/instruction-diy-filament-dry-box-the-anybox-v2/
https://www.builditmakeit.com/projects/3d-filament-drybox
Original Lack V2 Blogpost - https://blog.prusa3d.com/mmu2s-printer-enclosure_30215/
Controlling brim placement with prusaslicer -
https://m.youtube.com/watch?time_continue=12&v=0Zxl1WOJm90&embeds_referring_euri=https%3A%2F%2Fwww.google.com%2F&source_ve_path=Mjg2NjY
https://m.youtube.com/watch?v=dhsbMmosbLU&feature=youtu.be - https://www.reddit.com/r/prusa3d/s/9FLv8rOtII
https://m.youtube.com/watch?v=0Zxl1WOJm90&t=12s&pp=2AEMkAIB - this one works, under channel slicer underground - https://m.youtube.com/@Swiss_Cheese.
Sequential bridging - https://m.youtube.com/watch?v=KBuWcT8XkhA
Untangle filament - https://www.youtube.com/watch?v=lE9LchCtKL4
I need to go against the crowd here. This is not user error. I've had the same problem with eSUN's ePLA+ and PETG.
The issue is not tangled filament.The issue is that the spool was not loaded tidily. There was probably slack in the filament spool during the winding process. Normally, filament that will be extruded first are in the outer layers after winding. The slack during production allowed the filament strands to mix enough such that filament to be extruded later ended up in the outer layers, whereas filament extruded first ended up in the inner layers. During the packaging after the winding process of production, they pulled to tighten the filament around the spool, thus locking in this aberrant arrangement of filament around the spool.
The outcome is when you feed the filament into your extruder, you are pulling on untangled but buried filament. If there is not enough force to unbury the filament, it will fail to feed as in OP's post. For me, the unburying process unwound too much of the spool, leading to too much slack, causing filament getting stuck in the axle of my spool holder.
You can identify these problematic spools because out of the packaging, they are not neatly wound. I know this is not tangled filament, because I can feed an entire problem spool without once unloading it, if I keep fixing the problem by manually "unburying" the filament. And no, and the end of the spool there is not knot or crossing strands of filament.
https://www.reddit.com/r/FixMyPrint/s/GODhRnaQB9
How to orient boxes - https://www.youtube.com/watch?v=8NKVNwVaZU0
Overlapping layers between parts -
Here is a way to make two imperfect pieces that interlock to not show light between them - commonly used for injection molded design, but can make nice 3D prints https://www.youtube.com/watch?v=8dhFhU7Nl_0
How to split an STL into parts in PrusaSlicer - https://3dprinting.stackexchange.com/questions/21777/prusaslicer-how-do-i-preserve-the-location-of-interlocking-parts-in-a-muliti (found that after looking for an answer to this - https://www.reddit.com/r/prusa3d/comments/1ec3e6a/comment/lexfa7g/ - https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-how-do-i-print-this-printing-help/overlapping-objects-in-prusa-slicer/ )
Information around multi-material printing with an MMU
https://www.reddit.com/r/prusa3d/comments/1cm8knv/comment/l2za6gg/ - First, make sure you are in Advanced / Expert mode, these are considered Advanced settings.
Print Settings -> Multiple Extruders
In the "Extruders" section, you can set the extruder being used for various parts of the print and tower. "Wipe tower extruder" controls which one is being used for the outer wall of the tower.
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You also must set the support distance to “0.0 (soluble)”, otherwise it gives a warning about not supporting multiple extruders with the wipe tower.
Of course this is exactly what you want, but if you don’t set the support gap to zero before assigning extruders, it looks like it doesn’t work.
TPU notes:
To fix stringing: https://www.reddit.com/r/3Dprinting/s/cL6g0mgSZL
“ "Coasting" in PrusaSlicer
Cura has a very useful setting called "coasting" which tells the extruder to stop pushing out filament just before the end of its print move; this allows any ooze to become used in the print instead of becoming blobs and strings during the travel move. PrusaSlicer does not have this setting, but you can achieve a similar result with the following printer settings: set a non-zero retract length, enable "Wipe while retracting", then set the "Retract amount before wipe" to 100%. This will make the printer do all its retraction during the last bit of the print move, which roughly mimics the "coasting" ability of Cura, and it works very well for TPU, shown below. My retract length for this improvised "coast" setting was just 0.4mm. But also, calibrate your linear advance: mine is 0.2 for a 0.4mm brass Revo 6 nozzle. ”
Pause and insert pre-printed support- Tpu https://blog.prusa3d.com/10-tips-for-saving-filament-money-and-environment_71415/