My last couple prints been spotty like this one.

Ok. Thanks. Had no idea about that. I’ll check it out

To test if its abs or pla, just light it on fire!!! carefully.
It WILL drip fiery plastic.
So…
PLA will burn BLUE and no smoke.
ABS will burn YELLOW, and makes dark black smoke.
dont breath in fumes. Extinguish quickly.

@Reach_3D_Printers_Na ​​ you dont have to set it on fire. Just hold a lighter to it and smell. PLA will smell Like paper.

Thats true! I guess you don’t HAVE to set it on fire… but its alot of fun for 1 or two seconds… then the aftermath! :slight_smile:

Right, so just to check, if there’s moisture in the filament the fix is to pop the reel in an oven on the lower heat setting? Or stick it in a sealable bag with all the silica sachets that build up?

I have this: http://www.printdry.com

Generally, when I notice moisture in a print, it causes a texture from the steam escaping right at the nozzle.
This however…
Looks more like under extrusion.
As mentioned, checked the filament toothed gear/Hobbed bolt and the tensioner.
If the filament spool isn’t cross threaded, and can roll out easily, and the gear can push the filament easily, then the issue is in the hotend.
Hotends can jam or have low flow for many reasons;
Temp too high, cooling not sufficient at top of threaded barrel, hotend fan off during heatup, using all metal barrel for PLA that is designed for ABS, too hot on PLA can melt filament high in threaded barrel, and stick to walls, nozzle partially clogged which causes mid air extrusion to curl up sideways.
There are tons of possibilities that can cause hotend jam.
If your sure your setting in slicer are correct, then isolate if it’s the filament drive portion or if it’s the hotend/melting chamber.
I have a YouTube video demonstrating the method to find the issue and isolate where it is.
It’s for my Reach 3d printers, that use a clone e3d v5 hotend.
But the principles are the same.
Hotend breakdown starts at 9 min I think. The first few minutes cover the Extruder, and how/if to exclude it as source of issue.

Use simplify3d. That is the solution

Changed the nozzle, got new filament and it’s printed just fine ever since.