Under Extrusion with eSun White PLA+

[wirlybird]

I know white is a temperamental color but it seems to be a constant battle using eSun white PLA+ to get a constant acceptable extrusion.
This isn’t machine specific either.
I find I have to up the extrusion multiplier a fair amount, from 0.92 up to 1 in S3D, to get better results but it is still hit or miss.
It can go along fine for a while but then does some passes that are stringy and obviously much thinner than it should be.
I am currently printing at 215, recommended by eSun tech. I tried 210 but same results. Going to try a higher temp and see.
I am wondering if the filament diameter is just that irregular? I do measure it and eSun is normally at about 1.70 but the white seems to hit more around 1.66. I am starting to think that maybe the diameter is just getting too thin for a good grasp by the extruder gear to give a constant extrusion.

Thanks for any thoughts on this.

By the way, other colors generally do just fine.

[keebie81]

Which white? I have gone through a lot of the warm white with no issues in 1.75 and 2.85, I print at 200-210 typically. I have used both Titan Aero’s and wades gear setups for it.

[wirlybird]

Cool white PLA+. Most white I’ve used seems to under extrude to a point and is easy enough to adjust for but this stuff is by far the worst.
I think some of it is from the really poor dimensional tolerances. The cool white seems to run from 1.65 to 1.74 and can do that over a few yards. Most eSun is reasonably good at about 1.70.

[wirlybird]

I upped the print temp to 220 from 215 which was eSun’s tech recommended as to what people found to be a sweet spot. Initial results looked promising but we will see later how it ends up.

Need to get something figured out before starting a large job and ordering material (38 spools of white).

[wirlybird]

Here is an example of the issue I am having. The arrows indicate areas of apparent under extrusion.