Prints very thin lines instead of solid ones

Hello,

I have problems printing thingiverse.com/thing:53668 (50mm calibration angle). Instead of solid strings, I only get something that resembles “small dots connected via spider webs”. Though, I don´t have this problem with the k8200boardcover.stl as that prints just fine (at least the very first layers).

Using the sample PLA that came with the printer.
Extruder: 190°C
Heat bed: 50°C

Repetier-Host: 0.84 (as proposed by the manual)
Slic3r: 0.9.8

Best regards,
Lars

Hi Lars

getting that first layer right is critical.

Alcohol clean the bed thoroughly.

Level bed and z home height critical.
experimenting with the extruder temp.
Everybody finds the black PLA the easiest. What colour did you get?
You might need to increase the temp in increments of 5deg until you find the best result.

I found this useful:

matterhackers.com/articles/h … ing-in-pla

Thx, but this doesn´t match my problem. As I said, I have no problem printing the board cover, so in general it is ok. Problems occur with the provided “calibration angle”. Also tested another object from thingiverse which shows the same problem.

Sorry I misread that.

I have a model on thingiverse if you want to give it ago. The stl was created in TurboCAD takes about 1m of filament.
Standard K8200 PLA ini file but

I’m printing on glass so my bed temp was raised to 57deg C but yello Velleman PLA 190deg C. and I’ve added a 6mm brim via
sli3cer.

thingiverse.com/thing:656130

Same problem, only spiderwebs. What might be the difference between the stuff from thingiverse and the stl file for the cover?

btw: The manual says to use RepHost 0.84. Is this outdated and it is safe to use a more recent version?

[quote=“larsen”]Same problem, only spiderwebs. What might be the difference between the stuff from thingiverse and the stl file for the cover?

btw: The manual says to use RepHost 0.84. Is this outdated and it is safe to use a more recent version?[/quote]

Yes, it’s perfectly safe.
I use 1.0.6 by now and almost anytime the “builtin” cura engine to slice.
Maybe try that instead of slic3r.

Hi

I downloaded the calibration angle STL file and I got a good print within 0.1mm on the 50mm lengths - nothing wrong with the stl file or thingiverse

thingiverse.com/make:118064

I’m using rephost v0.84, slicer 1.1.7, standard Velleman PLA ini file but modifying bed temp for a clean glass bed 57deg. velleman yellow pla 190degC

[quote=“larsen”]Hello,

I have problems printing thingiverse.com/thing:53668 (50mm calibration angle). Instead of solid strings, I only get something that resembles “small dots connected via spider webs”. Though, I don´t have this problem with the k8200boardcover.stl as that prints just fine (at least the very first layers).

Using the sample PLA that came with the printer.
Extruder: 190°C
Heat bed: 50°C

Repetier-Host: 0.84 (as proposed by the manual)
Slic3r: 0.9.8

Best regards,
Lars[/quote]

What layer height did you use?
Can you post a picture of your print?

Hi,
thingiverse.com/make:118064

Those are my make photographs in the above link. The first layer and the completed item.

first layer height 0.35mm
the rest 0.2mm

I did use slic3er v1.1.7 from within rephost 0.84 . I only upgraded to 1.1.7 because the default version didn’t slice up a very complex model (then again neither did 1.1.7)

I could post the Slic3er code somewhere if you wanted to compare it with your version?

Looks like it’s underextruding.
Try calibrating your filament diameter and extruder steps/mm.

How far is the nozzle from the bed?

Got it solved and it was a noob-problem. Apparently, I have managed to get the filament right whenever I tested with the cover, but got it wrong all the other tests. Don´t know about the first tries as these were done some weeks ago, but the last time I tried the cover (and it was ok), I also practiced the filament change.

Although the filament was grabbed by the feeder, there must have been a gap between the old and the new filament. Therefore, the extruder was only melting the tip of the filament and so there was only enough material to produce spiderwebs.

I used the manual control to heat the extruder and to feed filament until enough of it squeezed out. Afterwards, the calibration angle was printed fine with 0.2 mm too big in one direction, 0.04 in the other and -0.06 to 0.02 in height.

before:


after:

Thanks for your support!

looks good

Nice you got it working.
Happy printing!

cheers,

Christian