Nozzle drags plastic

[3DPRINTK 0]

Could anyone identify why the nozzle is dragging plastic?

Please consider that -

Bed is levelled

Nozzle is clean (using atomic method)

All settings are standard with no adjustments. An it was working with these settings properly in the past.

I suspect the problem might be with plastic feeder behind the printer? Could you identify other reasons and solutions? The images show how the print looks to clarify whats happening

Thank you

Edited February 2, 2017 by Guest

[MechDesigner 3]

I am no expert,

Maybe the print bed is to hot,

and I do not see any glue on the glass.

[yellowshark 135]

Could be faulty filament. Load a new reel and preferably not white.

Could be wrong nozzle to bed distance. Take a simple oblong and print a skirt around it close the bed edges, say 2-3 loops. Watch it and adjust levelling screws to get it right.

Some knowledge of your settings would be helpful.

What is that is printing, a simple cube or similar; are the initial layers solid on the x/y plane or are there islands there causing the print head to jump around?

What adhesive are you using?

[3DPRINTK 0]

Thank you for your replies.

We are using CURA standard settings and we tried to print with different filament as well . Still same problem.

I suspect it is a problem with feeder as it can print 3-5 passes of brim with no problem, then feeder "clicks" and plastic stops extruding properly and nozzle begins to drag it behind (As in the image)

The tested print was of a floor slab.

Edited February 3, 2017 by Guest

[neotko 1,371]

Feeder clicks = Temperature too low for the current speed = Underextrusion

Solutions

a) Change temperature. Pop up the temp 5-10C

b) Slow down the print speed

Other causes of Feeder click

a) Hotend has debris = Do Atomic pulls to clean it

b) Filament isn't 2.85mm size. Any filament beyond 3.00 size will increase the chances of having issues when extruding it

c) PTFE Coupler life span has been reached. The tip near the hotend burns and compress, making it more difficult to feed filament. Solution, new coupler.

Edited February 3, 2017 by Guest