Zlift blobs and retraction

[Patrick K]

Hello all.

I'm having a bit of trouble with this last bit of aesthetic tuning on my M2.  I've played around a good bit with the zlift, retraction length, and retraction speed to try and get rid of the little blobs at the end of each path, but nothing seems to work.  I'm sure you all have seen this, but here is an image of what I'm getting.  I get the same behavior with both PLA and ABS.  It seems like the printer sits at the end of a path for just a split second too long, leaving a little blob that seems to be independent of any retraction/zlift settings.  Any tips for getting around this?

Thanks,

-Patrick

[Paul Leonard]

I have just turned off the zlift and had better results.

Paul

[Patrick K]

That crossed my mind briefly as I was posting this.  I'll definitely give that a try this evening.

[Triffid Hunter]

On Thu, Nov 1, 2012 at 12:57 AM, Patrick K <pkei...@gmail.com> wrote:

I'm having a bit of trouble with this last bit of aesthetic tuning on my M2.  I've played around a good bit with the zlift, retraction length, and retraction speed to try and get rid of the little blobs at the end of each path, but nothing seems to work.  I'm sure you all have seen this, but here is an image of what I'm getting.  I get the same behavior with both PLA and ABS.  It seems like the printer sits at the end of a path for just a split second too long, leaving a little blob that seems to be independent of any retraction/zlift settings.  Any tips for getting around this?

turn off Z-lift completely. Crank your retract speed up as high as you can without your extruder losing steps. Drop your retract distance as low as you can, 0.75mm works for me. If you get stringing with low retract, see if you can reduce nozzle temperature a little without getting jams or poor layer adhesion.