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PRUSA i3 Flexfill Original Extruder  

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wojciech.z2
(@wojciech-z2)
New Member
PRUSA i3 Flexfill Original Extruder

Hello,
Some time ago I purchased a Fiberlogy Flex Filament (without first checking if it will work on MK3), link: http://fiberlogy.com/pl/filamenty/fiberflex-30d/ . It is really soft, so of course at start I did not managed at all. Spend week or two searching forums and other places for settings, but nothing seemed to help.
Then the second approach with some more experience with Sli3r, and yes, even such very flexible material can be printed on MK3. I am so happy that I managed, that i wanted to say it to someone and share my settings, maybe it will be useful for someone like me.
So for settings:

1. Take Prusa 0.15 Profile and Prusa Flexfill filament profile as a start.
2. On filament settings: set temperature to 235 C
3. On filament settings: set extrusion multiplier to 1
4. On Print settings change all speed settings that can be set to 0 for auto as such (so set it to 0)
5. Set maximum speed for Autospeed on 20.

It will take some time, but I managed to print without any filament jams at all. I think the speed is the key, but the temperature also cannot be to low. I will experiment further, maybe speed can be also a little bigger, but for now I am working on 20.

Posted : 28/08/2018 1:38 pm
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bobstro
(@bobstro)
Illustrious Member
Re: PRUSA i3 Flexfill Original Extruder

Try adjusting Filament Settings->Advanced->Print speed override->Max volumetric speed instead. This will allow printing up to your normal speeds so long as the max volumetric speed (hotend capacity) isn't exceeded. It has the same effect, except allows faster speeds if not above the limit. The Prusa profile for Colorfabb XT-CF20 (carbon fiber) is set to 1. If found with TPE I could get up to 4-5 with good results.

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 : 28/08/2018 6:22 pm
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marcincc
(@marcincc)
New Member
RE: PRUSA i3 Flexfill Original Extruder

@wojciech-z2 - thanks a billion bro! This post was priceless for me!

Posted : 17/02/2020 4:20 pm
Pari
 Pari
(@pari)
New Member
RE: PRUSA i3 Flexfill Original Extruder

Hi guys,

don't know if this thread is still going. This is my first post on the forum. I have a MK3s. First printer and new to it, so still learning the ropes.

Anyway, thanks for the tips on printing with Fiberology Flexible filaments. I'm using the 30D. I've had a real hard time to print this filament, even with all the tweaks from this thread. Then I figured out that the prints were going wrong at a certain point. I'm not sure what the term is for the big squish of extruded filament that the MK3s squirts out immediately after the bed leveling routine and just before the extruder moves across to the print- maybe it's called priming the nozzle or something like that! So loading the filament is fine- material comes out, all good. After the bed leveling the thick squish is good too, then the extruder moves to the print and nothing, like the material has stopped flowing by the time it gets to the work area. I tried everything suggested including changing the nozzle height from the build plate. I had to keep stopping the print, unclog the extruder and try again, spent many hours doing this.

So between the nozzle priming and the print starting I stoped the print right after the priming, unloaded and reloaded the filament and then resuming the print, and this seems to work great!

So I don't understand what it is that happens between the priming the nozzle and the print starting, but my fix seems to help things get going properly.

If there is a better solution, some setting to change after the priming, I would greatly appreciate any help.

Cheers

Posted : 23/08/2020 10:42 am
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Moolab
(@moolab)
New Member
RE: PRUSA i3 Flexfill Original Extruder

This was very helpful! The print looks good so far with your settings

Posted : 31/12/2020 8:14 pm
Maciej Andrzejewski
(@maciej-andrzejewski)
New Member
RE: PRUSA i3 Flexfill Original Extruder

I can not load Fiberlogy Flex 30D  filament at all.
When I load it it gets clogged in the extruder-idler and never gets into the nozzle.
Any tips on that?

Posted : 13/01/2021 1:22 pm
L'Atelier de Florent
(@latelier-de-florent)
Active Member
RE: PRUSA i3 Flexfill Original Extruder

@maciej-andrzejewski

Hi !

I've just found how to do it after receiving Flex 30D spools.
Here it is :
Clean the nozzle. You musn't have any other filaments parts inside. Disable autoload on your printer. Then unscrew the idler. Insert the filament manually, screw the idler (not too much). Then load filament using the "move axis" command (extruder axis to be exact).

Done ! Your filament is extruding !

Now print at slow speed 🙂

Posted : 27/02/2021 2:53 pm
antryn
(@antryn)
New Member
RE: PRUSA i3 Flexfill Original Extruder

@maciej-andrzejewski

I had the same issue. Disable autoload, unscrew the idler, insert the filament manually, screw the idler 1/2 - 1 turn. If it doesn't help, change the screw from 40mm length to 45. When you do this, insert the filament, hold the extruder door by hand and turn the screw until you feel any resistance. It worked for me. 

Posted : 03/03/2021 11:48 am
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