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cleaning filament ?  

Eminent Member
cleaning filament ?

is this  stuff worth  buying ?

Posted : 17/02/2021 2:57 am
Eminent Member
RE: cleaning filament ?

Maybe I'm not the right guy to answer as I have never used it. Have also thought about it, but haven't been in a situation where I felt like it would help....

Posted : 17/02/2021 8:54 am
Famed Member
RE: cleaning filament ?

I use the eSun cleaning filament, but infrequently. Most of the time for nozzle changes, to get as much gunk out of the old nozzle as I can. If I just do regular filament changes (same or different material types), I tend to run the new filament through 4 or 5 "is the color correct" cycles, and that seems to do the job. I have used cleaning filament for cold pulls but again, most of the time I found regular filament work just as well for that particular task. 

Posted : 17/02/2021 11:22 am
DrMargin liked
Illustrious Member
RE: cleaning filament ?
Posted by: @dogosforeverdad

is this  stuff worth  buying ?

Absolutely worth it. You don't need to use cleaning filament. You can do cold pulls with PLA, and nylon is very good. However, there are benefits to cleaning filament:

  • You can use it at higher temps than most filaments, ensuring anything inside the hotend or nozzle gets melted out.
  • It will also extrude at low temps, so if a bit of cleaning filament gets left behind, it won't cause a jam next time you print PLA. 
  • It is very stick and flexible, so is very good at capturing crud inside the hotend and nozzle.
  • It absorbs moisture. This is bad for print quality but good for cleaning. When using cleaning filament, it will often steam a bit and extrude a very bubbly stream. This is great for trapping debris when it cools and you do a cold pull.

My favorite cleaning filament was, but sadly they've ceased production. I use eSun regularly now.

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Posted : 17/02/2021 6:48 pm
Trusted Member
RE: cleaning filament ?

I use it whenever I change between filament types. Going from PLA to higher temp filaments such as PETG have on more than a few occasions clogged up my nozzle. It's just my guess, but it seems like PLA residue gets overcooked and burned at higher temp, then clogs the nozzle. Then I started using cleaning filaments whenever I change filament type. Not a single clog since.

It's funny how the cleaning filament works. I'll usually load the filament, then when the printer ask if the filament loaded correctly I leave it unanswered for about 5 minutes or more - cooking the nozzle. After a few minutes, I tell the printer "no", which basically feed more cleaning filament through. The second time it feed more, the cleaning filament always comes out with a few black spots in it. I repeat this procedure until I see no more residue in the extruded cleaning filaments. It usually takes 3-5 purges to get all the crud out, if its been a while since the last cleaning. 

This post was modified 2 years ago by loadinglevelone

My printers: Mk3s / Mk3s clone with +upgrdaes (you know SPinda and all that good stuff) / Mini+ / Ender 3 v2

Posted : 17/02/2021 10:15 pm
Famed Member
RE: cleaning filament ?

I've had good luck with it, both for the so-called cold pull and just for giving the hot end a good flush if needed.

Posted : 18/02/2021 10:51 am
Robee Shepherd
Estimable Member
RE: cleaning filament ?

I have used it sometimes to flush out all the remaining bits in the hotend, I rarely use it but it's nice to have around. It is quite expensive but I'm sure it will last you years as you don't use a lot of it when you do.

Posted : 19/02/2021 9:58 pm