Pla flex in ultimaker 2

[Michalis 0]

Hello everyone,

 

i already know that ultimaker 2 does not support pla flex filament, but i would like to ask if there any configuration which can give me a result. 

[yellowshark 147]

Hi I do not think your statement is 100% accurate. My understanding is that this applies to all Bowden tube printers, you really need a direct drive printer for this. But people on this forum have succeeded with flexible filament. I tried Colorfabb's nGenflex a year or so back; it was not too difficult to get it feeding through the Bowden tube drive system OK but I failed to get a decent surface finish and gave up.

[reibuehl 33]

In the beginning, Ultimaker even sold a flex PLA. I tried a number of Flex PLAs over time with more or less success. The more flexible the PLA is, the worst the results. NinjaFlex and similar do not work at all, but the less flexible ones can be used.

You have to tune the parameters though. I use extremely slow print speeds -  10mm/s usually - and no retractions if possible. It also helped me to lubricate the bowden tube with a little dash of WD-40.

[conny_g 250]

I changed my feeders into Bondtech and with these it works much better, I get decent results with Ninjaflex. They have much better grip than the original feeders.

Speed must be less than 10mm/s, though, I print first layer, top and outside with 4 and the rest with 8.

Still works with more, but with frequent brief periods of underextrusion, smothering object becomes a bit spongy / porose.

 

Attached a photo of rubber feet I printed, diameter about 2cm.

And damper feet for the printer.

 

 

Edited January 10, 2018 by conny_g

[StephanK 28]

I am printing PLAflex (by rigid.ink) with the help of Bondtechs new DDG just fine, even at "moderate" speeds. I just print a set of wheels for a 3DLabprint RC plane at 50mm/s. (Using an UM2+). Didn't get around to try some of the even softer materials yet, but so far this is a big improvement over the stock feeder. I am quite happy with these results.

 

Edited January 12, 2018 by StephanK