Unresolved Wall quality issues.

Hi guys!

After a few months of trying different things I still haven't been able to fix my wall issues. There is warping in the images attached but that was my fault for not printing with a brim. Every time I post I get asked whether or not I've calibrated the extruder so I'll clear that up now: No. The reason being that if I change the extruder value in the eeprom in any way from 723, the surface is either bubbly (overstuffed), or not complete. I performed the calculation from that 'Tom's guide' video and got a value of 840 or so. I tried it and it didn't make a difference apart from not forming surfaces properly. A Robo3D support technician also told me the number should be lower than 723, not higher.

Other than trying to change the extruder value in the eeprom (sorry if my terminology is off), I've tried messing with temperatures, using an enclosure, using the heated bed at different temperatures, using different brands of filament.

Not to be too negative, but the printer has cost me double its value in repairs and never worked right so I'm reluctant to try buying a new extruder or too many new parts if I can avoid it, but don't let that stop suggestions!

Next step for me is to get a temperature gun and see that the extruder is *really* at the temperature the thermistor is telling me it's at.

As you can see from the 'Surface Quality' image, the surface quality is pretty much perfect as far as I'm concerned.

Any ideas as to how to fix the wall issues?

 

What material are you using and what are your heat and speed settings

They do look over stuffed but it is hard to tell, there can be a lot of variables at play when it comes to quality of the wall. As well as what your extruder multiplier is set at


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I'm using PLA at 195C but have tried in 5 degree increments from 185 to 235 C. Speed settings are 20mm/s but I have tried in increments of 5 from 10mm/s to 60mm/s. The extruder multiplier is not in the Cura plugin for Repetier, so I guess it's at 100%

 

The temperature gun was just an idea, Mark...

With regards to slicers, Cura is the only one that results in a print. For example, slic3r doesn't do infill for me at all. It does the stuff shown in the image below. The wall quality was no better either.

I could try Kisslicer and Skeinforge but I've no idea how to work them. I'll give them a go.

 

I've attached the model to this post. It'd be nice to see what it looks like at 50 microns if you can slice it at that please. For all prints I print at 20mm/s.

 

I screwed up, sorry! Here it is. My z-offset is 1.1.

 

Yup, 195 is perfect. Thanks very much, Mark. I appreciate you helping me eliminate possible causes of what we can see in the images. I'll print it tonight and post pictures in the morning.

 

It doesn't have a brim, so there will be warping in the corners. Could I add that myself in repetier or does it have to be added within the slicer? I don't have Simplify3D.

 

Sorry. I did mention that it warped without a brim in the second sentence of the original post but I'm only mentioning it so I don't seem like an idiot now

Layer height: 0.05 (50 microns)
Infil density: 25% (But I expect that doesn't matter a whole bunch on this print)
Z-offset: 1.1
Temp: 195C
Speed: 20mm/s
Printed with a brim.

I hope that's all the important stuff!