Holy Print Batman!

[Clancey 0]

Ok, I'm in a silly mood today, not even the holes in my model are annoying me. Yet!

It's an odd problem I've only noticed with the AA .8 core. The core doesn't extrude enough material at the beginning of the outer walls. It's ok once it gets going, but for around the first 10mm (speed depending) there isn't enough material and the result is a very rough print or holes.

I've played around with a load of speed settings without making any real headway and I'm wondering what to try next. It seems so daft to be playing about with settings for what amounts to less than 1% of the model's surface. Do I need to look at retraction? I couldn't see a re-retraction setting, or is it un-retraction, or attraction? Where would I look? Is it a speed or a distance I need to adjust? And, it's only the outer walls, everything else, all other details are fine, so I don't want to bugger about with settings that are going to fix this 1% and mess up 75%. If you see what I mean.

Time for a cuppa and another search. Any advice would be gratefully received.

Thanks.

[gr5 2,265]

I may have had this exact same problem - not sure. Is this a dual extruder print? I had it with the default profile for 0.8mm in cura.

One of the problems is that the default profile does a retraction on layer change. wtf? I don't know why. None of the other profiles do that. It's a bug. I reported it but it apparently was ignored. So check that - something like "retract on layer change".

Also there were speed changes and flow changes that were the major issue. I changed my settings so that line width was ALWAYS 0.8 (changing line width on infill can lower the pressure in the head and it takes time to recover - your 10mm issue). This was the larger issue.

So set all lines widths to be the same (0.8mm) and set all SPEEDS to be the same (all printing speeds - travel speeds should be >=150mm/sec).