Unresolved Print quality question

Hello.

Is anyone able to tell me why I am getting areas on my print like this (see the picture - bottom left corner)?

The remainder of the print is fine; however, this occurs on many of the prints (not in the same area) but not all.

I am using Hatchbox PLA 1.75mm filament (210C/50C) - standard settings in MatterControl for medium print quality

 

Is this the first layer. If so, are you using any techniques for making it stick to the glass? I use hair spray and it works flawlessly.

Otherwise, maybe calibrate the extruder ?

 

This is the layer on top of the raft. I looked at the rafts when I detached them and they look fine (all symmetric).

I use a glue stick to attach the print and never had any issue with it sticking. It is strange to me it only happens in a single location and never in a consistent area.

 

It looks like filament is sticking to the nozzle on a move, the spot you are seeing is where it stops its circuit and starts over again, with multiple repeat layers this would be more evident. Try lowering your extrusion multiplier as the rest of your print seems overextruded.

 

Thanks for the advice. Any recommendations how how to adjust the multiplier (ie: by what amount is a good starting point). I haven't even messed with it before.

 

well 1x means nothing has changed, try 0.8 (80%) and go from there.

 

Ok I will give it a shot and let you know. Thanks!