Having troubles with your 3d printer? Here some things i found to be the main causes of problems.
The first layer doesn’t stick well to the buildplate:
- The distance between the plate and the nozzle is too high. Correct with the screws or adjust the height of your Z-Endstop.
- It is not the right temperature. This varies with filament and heatbed surface. You have to test it out.
- The flow settings are not right, see ‘Not enough plastic coming out’
- The printing speed is too high. Try something between 20- 30 mm/s
- The first layer is too thin. I always print the first one with 0.2mm.
No plastic is coming out
- There is dirt in the nozzle.
- The temperature is too low
- You have changed from ABS to PLA and there still is ABS which will not or badly extrude.
- The nozzle is too close to the buildplate.
- The feeder doesn’t push the plastic forward.
Not enough plastic is coming out
- The the filament diameter in the settings and remeasure it at different points on the spool.
- Check the diameter of the nozzle in the software.
- Check if the feeder is grinding (you can see it on the plastic if you have a bowden tube or watch it a little bit an you’ll see if the filament moves).
- Check the ‘Steps per E’ setting in the Software and the resulting GCODE.
The retraction is not working properly, leaving imperfections
- Check if the feeder is grinding and if the ‘Steps per E’ are correct
- Check the filament temperature
- If you use a bowden tube take a close look at the tube. You might have to adapt the settings to compensate for the bending of the tube and eventual space between plastic/inner wall.
If you let the nozzle cool down with filament (so it doesn’t move any more) you can poll/push the filament in both direction at the feeder to see the backlash.
The model walls/lines are ‘wobbly’
- Check the tension of the belts and it the pulleys are locked in the right position.
- Enable the heatbed, it may be thermal deformation.
- Use a raft or other surface material.
- It there sharp shifts check if the steppers and the drivers: current too low (steppers loosing torque), current too high (driver overheating), or maybe stepper/driver dying (swap axes if you don’t have spare parts for testing).