Printing PVDF or other fluoropolymers

PVDF can be found as a welding rod 3mm in diameter. Anyone tried to print it? Maybe any other fluoropolymer?
Google does not really show anything except some new extruders which are currently being designed and should be able to print new materials including PVDF. Whats wrong with puting PVDF through regular nozzle?

Quote
Edvardas
Google does not really show anything except some new extruders which are currently being designed and should be able to print new materials including PVDF.

Got a link?

GENERAL RECOMMENDATIONS FOR PVDF EXTRUSION
[www.distrupol.com]

Nickel plating is recommended for the screw/barrel, so it's probably very corrosive to metals.

... please consider that VF2-CTFE (SOLEF ® 30000 and 60000 series) copolymers have
a lower thermal stability, and hence should be purged with homopolymer before
stopping the extruder.

2.4. CLEANING
- at the end of an extrusion program (or if problems of degradation would occur), purge
with a thermostable, highly viscous, pure polymer, which processing is compatible
with PVDF :

eg HDPE (Eltex HDPE 5920), PMMA, PP or highly stabilized special PVC compound
(Benvic® ER 499)

3.1. PRESSURE
Melt pressure depends greatly of viscosity and equipment (filters, die dimensions, etc.).
Typically, melt pressures between 100 and 200 bars are observed during conventional
extrusion.

3.2. DECOMPOSITION
- in thermogravimetric analysis (TGA), progressive degradation of PVDF
homopolymer is noted from 380 °C onwards. Nevertheless, do not forget that actual
processing conditions can be much harsher.
- the degradation reaction is autocatalytic
- HF will be released
- with VF2-CTFE copolymers (30000 and 60000 series) HCl will also be released.
These copolymers hence show a lower thermal stability

NOTE
All the information given in these pages can only be considered as examples for processing of SOLEF.

Edited 1 time(s). Last edit at 12/21/2013 08:30AM by A2.

[www.kickstarter.com]
Here is a link. Does not sound like something ground braking.

Nickel plating should not be a problem, there are companies doing that as a service and even a DIY kits.

Cleaning with PP or PE is also no problem as these materials are tested with normal nozzles and work.

I am really not sure about pressure. Can not find an extruding pressure for ABS or PLA. ?


In the end it looks like printing it should not be a problem. Or atleast running a few meters through a regular nozzle to see how it works. It is strange that there are no reports on that. Maybe it is its availability that is a problem? I know a supplier that only sells a spool and it should be a few times pricier than ABS or PLA. Will try to get get a sample of a few meters and run it through a regular nozzle. Unfortunatelly at this time of a year it might only happen in a couple of weeks.

Extruder Drive Design Ideas for Inexpensive Oval Welding Rod
[forums.reprap.org]

Did not watch a video at first, sorry.
Unfortunately it will only be shipped at the end of next year.