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Strong single line on top layer
 
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cory.w
 cory.w
(@cory-w)
Estimable Member
Strong single line on top layer

I have seen these thicker/stronger lines on top and bottom layers. Any suggestions?

Opublikowany : 02/05/2017 6:08 am
Mario
 Mario
(@mario)
Eminent Member
Re: Strong single line on top layer

Might be wrong, but from the first look those gaps at the corners etc. I'd say you're underextruding (although I'm still new to 3D printing as well).

Pretty easy to test:

  • Heat the nozzle to your usual print temperature (typically around 200 or 205°C for PLA).

  • Use a ruler and measure the first 10cm of filament sticking from the top of the extruder.

  • Mark the 10cm position with a pen or a piece of crepe tape (just stick it loosely).

  • Now go to "Settings" and "Move Axis".

  • Make sure the nozzle is at least a few centimeters above the print bed, move Z axis up to be sure.

  • Move further down and pick "Extruder".

  • Note the current position (should be 0.00 after turning the printer on).

  • Use the knob to add 50.0 to the previous position (which should move the filament by 5 cm). Make sure you don#t accidently pull the tape into the extruder!.

  • Now measure the distance from the top of the extruder to the position marked before.

  • Remove the tape, in case you've used some and make sure it's all gone!

    • This typically won't result in a perfect 5cm distance.

    Use the following formula to calculate your extrusion multiplier: multiplier = 50mm / (100mm - remainingdistance)

    In my case I ended up with a remaining distance of 53mm, so the filament moved by 47mm rather than 50mm. Putting the numbers into the formula results in a factor 1.0638.

    If your calculated value is outside the 0.9-1.1 range, there might be something wrong with your filament spool or extruder (like screws too tight or loose).

    Open your slicer and in the filament settings there should be an option for the extrusion multiplier (defaulting to 1). Insert your calculated result, then try printing again.

    Opublikowany : 03/05/2017 3:40 pm
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