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Troubleshooting guide

 

Please make sure you've uploaded ULIO's printing parameters (*.ini files) in CURA's profile BEFORE you print with ULIO

  • Make sure all the parts move with ease
    • Add some lubricant (Vaseline or sewing machine oil)
  • Make sure the print bed (part E) is well fitted onto the y axis rack (part D)
  • Make sure the buildtak sheet is properly fixed (does not move) into the print bed frame (part E)
  • Make sure your print bed is leveled on all four corners if not
    • Please adjust the screws under the print bed

 

 

A

First layer

The first layer is probably the most important feature of a print and it should look something like this

 

 
 

B

First layer (next)

This nozzle seems to be too close to the print bed

  • Lower slightly the print bed by slightly turning clockwise the Z level thumbwheel (part T)
 
 

C

First layer (next)

This nozzle seems to be too far from the print bed

 
 

D

First layer (next)

This nozzle seems to be wayyyyyy to close to the print bed that it's barely extruding any filament

If this is not quickly corrected it will probably clog your hotend

  • Lower slightly the print bed by slightly turning clockwise the Z level thumb wheel (part T)
  • Your nozzle might also be clogged (please see how to unclog the nozzle below)

 
 

E

First layer (next)

This nozzle seems to be too far to the print bed and the PLA is not sticking to the printbed

  • Higher slightly the print bed by slightly turning counterclockwise the Z level thumb wheel (part T)
  • Make sure your first layer print speed does not exceed 20 mm/s

  • Spray some 3D lac on the print bed (or spray lots of hair spray and let it slowly dry)
  • Add a brim to your print

 

 
 

F

First layer (next)

The print bed seems to be unleveled

  • Level the print bed by carefully adjusting some of the screws under the print platform
  • Once the set screws are adjusted you will have to lower the print bed by slightly turning clockwise the Z level thumb wheel (part T)
 
 

G

Inadequate cooling or over extrusion

Make sure the PLA print temperature is correct (185 to 210 deg C)

Make sure the side cooling fans (FAN1) are working properly 

  • If there's an AC current nearby the printer please adjust the fan speed to 80%
    • If not maintain the fan speed after the first layer at 100%

Make sure the extrusion multiplier is set to 100%

 
 

H

Gaps at the top layer

Higher the infill percentage

Higher the thickness of the top layer

 

 
 

I

Insufficient cooling time

Reduce the print speed at the top layers by adjusting the minimum layer time from 5 to 10 seconds

 
 

J

Layer shifting

Make sure the rails along the shifting axis move freely

  • If the x axis is not moving freely:
    • untighten slightly the top 3 screws of part I
    • Adjust the x motor
    • Make sure the x axis gear is a tight fit on the motor shaft
    • Add some lubricant (Vaseline or sewing machine oil)
  • If the y axis is not moving freely:
    • unscrew and adjust the side screws of part J (not too tight)
    • Adjust the y motor
    • Make sure the y axis gear is a tight fit on the motor shaft
    • Add some lubricant (Vaseline or sewing machine oil)
 
 

K

Clogged hot end (nozzle)

Set the temperature to 230 deg C then try to manually push the PLA filament

If nothing comes out:

  • First remove the PLA from the bowden tube (make sure the hotend temperature is 230 degC)
  • Push downward the black bowden clip on the top of the hotend and remove the bowden tube from the hotend
  • Make sure to clean the tip of the bowden tube
  • Reinsert the bowden tube all the way into the hot end (5 cm) and take it out 
  • Repeat these actions until the clog in the hot end is clean

If your nozzle is clogged:

  • Heat up your hot end to 230 deg C and use an acupuncture needle (purchase online) to clean the 0.4 mm bore
  • unscrew your nozzle and dip it in acetone for a day and then clean it out
 
 

L

Partially clogged hotend (nozzle)

Extruder seems partially clogged and/or  the hotend temperature seems unstable (temperature rising and falling)

  • Make sure ULIO is not near an AC air draft
  • Reduce the fan speed to 80%

If that didn't work then:

  • Heat up your hot end to 230 deg C and use an acupuncture needle (purchase online) to clean the 0.4 mm bore
  • unscrew your nozzle and dip it in acetone for a day and then clean it out
 
 

M

Top edges curling up

Reduce the print temperature

 
 

N

Leaning printed object

Make sure to add and adjust part V to reduce Z wobble (sideways movement of part C)

Make sure the X and Y axis gears are a tight fit on the motor shafts

  • You can test this by manually twisting the gear in the shaft
    • You should not feel any looseness
  • Make sure the teeth between the rack and pinion are well connected (not too tight however)
  • Make sure the x and y racks move with ease
  • Add some lubricant in the rails (Vaseline or sewing machine oil)
 
 

O

Partial under extrusion

Make sure the filament is rolling freely

 
 

P

Side wobble

Make sure the x rack (part F) is well fitted into the rail of (part A)

Make sure to adjust parts P and Q

Make sure to add and adjust part V to reduce Z wobble (sideways movement of part C)

Make sure the X and Y axis gears are a tight fit on the motor shafts

  • You can test this by manually twisting the gear in the shaft
    • You should not feel any looseness
  • Make sure the teeth between the rack and pinion are well connected (not too tight however)
 
 

Q

Curling bottom edges

Make sure the distance between the nozzle and the print bed is properly adjusted

Make sure your first layer print speed does not exceed 20 mm/s

Spray some 3D lac on the print bed (or spray lots of hair spray and let it slowly dry)

Add a brim to your print

 
 

R

Accurate measurements

Calibrate the X, Y and Z axis in the marlin firmware

 
 
 
 
 
 
 
 
 
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