Do your layers have uneven extrusion due to temperature differences?

If you notice inconsistencies with your print layers, the most likely culprit is temperature variation. They can cause unsightly deformities on your print.

Solutions:

Make sure that the temperature is consistent all throughout your print with the following tips below:

• Tweak your PID tuning: You can adjust this setting through your firmware program. PID tuning ensures that your heated bed and hotend maintains its temperature.
• Check your heater cartridge and Thermocouple leads: If there are loose connectors or breaks in either of these parts, it may cause the temperature to go haywire.