Flexible filament

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Corrado
Posts: 7
Joined: Wed Dec 20, 2017 4:06 pm

Flexible filament

Postby Corrado » Sat Jan 13, 2018 10:15 am

Hi,
I'm trying to print with flexible filament (Flexismart 1.75mm):
Cattura.JPG


The first time I was able to load it but when I started printing nothing came out from the nozzle.

I unloaded this filament, made some prints with ABS and today I tried again to load the flexible filament.

It didn't even come out from the nozzle during loading!!!

Any suggestion?

Thx

User avatar
Billucas
Posts: 188
Joined: Fri Jun 17, 2016 12:42 am
Location: Quebec, Canada

Re: Flexible filament

Postby Billucas » Sun Jan 14, 2018 1:03 am


Corrado
Posts: 7
Joined: Wed Dec 20, 2017 4:06 pm

Re: Flexible filament

Postby Corrado » Sun Jan 14, 2018 6:46 pm

I did the cold pull with Premium PLA as suggested and this time I was able to load the filament without problem.

I then tried to print the sample cube starting with the Standard - N2Plus - elastic template and changing some parameters as suggested in the printing guide of the filament (FlexiSMART - FFF World):
- Fill density 15%
- Shells 3
- Layer height 0.20
- Extrusion width 0.45
- Default printing speed 25mm/s (first layer 15 mm/s, infill speed 35 mm/s)
- Temperature 220°C
- Bed temperature 50°C
- Retraction deactivated
- No top cover
- No fan covers

Manufacturer printing parameters:
Schermata 2018-01-14 alle 19.33.28.png


The result is not yet what I expected:
Schermata 2018-01-14 alle 19.23.33.png


What is the problem?

Thx

User avatar
Billucas
Posts: 188
Joined: Fri Jun 17, 2016 12:42 am
Location: Quebec, Canada

Re: Flexible filament

Postby Billucas » Sun Jan 14, 2018 7:22 pm

Hi, maybe this reading could help you:

https://www.matterhackers.com/news/how- ... e-filament

From my side, I successfully printed with TPU and Polyflex filament. But I had to adjust the extruder motor with the gear;
has to be closer to the filament.

Also, I use 0.6mm nozzle. I found it is better than 0.4mm; less clogging possibilities.

I changed the PTFE tubes with these ones : https://www.captubes.com/
Because there is no restriction with the flexibles sticky filaments.

I keep the top cover and the fans covers on with no problems.

- Temperature 250°C ( TPU ) and 225°C ( Polyflex )
- Bed temperature 50°-60°C
- First layer height at 0.25mm

You should try lower and higher temperature.
Maybe it is to low at 220°C ?
Maybe your filament is a bad quality or there is to much moisture?
Did you try to clean the nozzle first with the Raise3d rod?
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