Do you mean when dual printing or generally the end of print purging? For dual printing if you get the latest releases there are two dual options in the auto configuration, one with the ram purge and one without... Done...
Not tried dual printing yet, just running it as a single operation at the moment was just more of an aide memoir if anyone tries Ninjaflex and has followed all the earlier posts (as I did, don't want anyone to have to rebuild their hot ends if it can be avoided).
I turned off retraction in S3D and haven't had issues. Also, my top-mount spool holder is live on Thingiverse: http://www.thingiverse.com/thing:1692686 This helps a TON with feed issues. Fine-tuning the eSteps also helps with the feed runaway issue. I'm printing at 25mm/s and at 242° but things are flowing and sticking and the babysitting part of printing in Ninja is starting to go away. Also, cleaning the nozzle with a length of clear PLA before every change over to Ninja has been helpful.
I am making my first print with FlexiFil, something similar and I had to clean the nozzle with some PLA and then also use a two part feeding tube . So far so good (I am half way). In fact so good, I wonder where can we buy ninjaflex in europe at good prices!! AAAA: spoke/wrote to fast, it detached from the bed. first print failed:-(
My Titan has handled the flexifil very well. Bed adhesion is an issue only of the bed does not have enough uhu (glass/kapton). Now holidays, after I might try some very soft flament for Spain of which I do not recall the name, but it made really nice shoes
So you're saying we should give up on the machine/extruder we bought, skip the E3D-official Titan upgrade, and spend more money on something else instead of just making this work? Someone's not much of a hacker....
I had no issue printing NinjaFlex and it was my first print with that material ever... inserted it, tension to very low and print...