What seems to be the problem here? I think it might be inconsistent filament diameter but I thought I’d ask the community before I write off the manufacturer and ask for a refund or replacement. Esun PETG. The last two pics are of the problems I mentioned in my last post, the gap before extrusion due improperly re-priming after retraction(which only seems to occur on the layers with more surface area), and the small blobs above the rings due to pausing before layer changes. Any help is much appreciated.
-“I swear I haven’t been drinking officer.”
“Then why can’t you walk a consistent circle, Mr. Simple?” 
Seems like a filament inconsistency to me.
No digital caliper to check the filament diameter? I’d definitely suggest getting a pair, you can get decent ones for ~$10.
That said, I’ve always had trouble getting good cylinders on the PSM myself…
What’s the layer height and speed?
Filament inconsistency isn’t unusual on eSun. I’ve gotten upwards of ±0.10 on some rolls.
I have some Esun white PETG and I had some of this problem as well, far less after drying it at 40-45c and 10-14% humidity for like 8 hours (in ABS enclosure as a print was running). It now does much better, but not as good as their orange PETG which I really like. Thing is they are totally different structurally. The Orange PETG i just got is all bumpy but prints nice and consistent. the white PETG is smooth like normal filament. Not sure what’s up with the bumpy PETG, maybe a new thing to make it grip extruder gears better, possibly easier to get a consistency of material extrusion per mm with a non round shape. seems to work somehow and extrude consistently. Is yours sort of bumpy like in this pic or smooth?
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this is the remaining issues after drying the Esun white PETG, one over extruded layer out of like 100. 1 hour and 45 minutes into the 2 hour and 30 minute print 
happens at edges of through features like the mounting hole in the pic. Some filaments do it way more than others. not sure what it is, need to ask more questions.
with all the OK surface I was able to plane it off with the edge of a sharp razor like shaving a beard, its a mounting surface so as long as it’s smooth. but the white ESUN PETG is annoyingly really good then bad for a while. Drying should help, first prints looked like the one you have and got much better after dehumidifying it.
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@Tom_Nardi I do have a caliper and that was the first thing I checked but I’m seeing between 1.72 and 1.76 along the portion that I measured but this was a nearly 10 hour print using more than 54 m of filament and most of the print is fine so I would have to unroll it too much to find this sort of inconsistency. Layer height is 0.2 mm and default print speed is 60 mm/s but perimeters were printed at 45 mm/s. I checked the belt tension on my X and Y axis right before the print and then after once I saw the defect. I also calibrated my extruder before as well.
@AlohaMilton I really hope that’s not the issue, it came vacuum sealed and I just opened it yesterday. I’ve left ABS and PLA out for months and gotten perfect results. But since it’s pretty much agreed that this is a filament issue I’ll have to contact Esun and switch back to Hatchbox which is thankfully back in stock on Amazon.
I had some PETG that required speeds to be very low, but it looked beautiful when printed at 15-20mm/s. May try lowering speeds and see if that helps any. ^^
@Kura_kuea It’s only bad on that one section, if print speeds were the problem it would be shown over the entire model.
@Adam_Steinmark does the poor quality only happens in some areas of the model? It’s less likely to be the filament then.
If it’s mainly happening on long straight sections or sweeping corners, that’s where head speed will actually reach maximum. So it could be speed related.
@David_McGuigan No, the print is identical for each layer after this until the veritical holes at the top.
Which do you print first, the external perimeter or internal?
What temps are you trying to extrude? What are your general speed settings? I’d do no less than 230°C and outermost perimeters no faster than 45mm/s, but be willing to test slower and/or hotter.
@AlohaMilton supposedly that texture is intentional. I would ask Intservo about that. I have black eSun PETG that has such a texture. It hasn’t affected part quality for me.
Maybe the print bed is slipping
@Kura_kuea internal
@Jeff_DeMaagd 245 C. 60 mm/s base speed, 45 mm/s for the perimeters.
@adrian_nicholson If you look up you’ll see I mentioned that I checked my belt tension before and after the print. I found the method of securing the belts with zip ties was not reliable enough, so my belts are held by plastic clips with a zip tie to prevent vibration slowly pushing them off. Those babies aren’t going anywhere. My X belt is also only about a month old. Besides there was no layer shift, just bulge.
I had similar issues, spoke to the manufacturer of my printer. And was told that the print maybe be slipping. Does the print bed move when printing or is it stationery? Mine moves back and forth.
@adrian_nicholson yes it moves in the X direction. This is the Printrbot Simple Metal with some upgrades including the upgraded bed if that helps. It’s possible the bed could slip but the way I have rigged it makes that possibility very low but I checked for slippage and there was none. If there was slip there would be layer shifting which is not seen.