[Vertex K8400] Rough Prints

[Tixhyl]

Hi!

Since i had a clogged nozzle a month or two ago, the quality of my prints is going down. The surfaces of my prints are really rough, compared to the prints i had before the clogging. I thought this woud be due to the temperature, so i edited some gcode that prints a cube, and every 10 mm changes the temperature by 5°C. I started with 220°C and ended with 190°C. But weird enough, i see practically no difference between the layers. They’re all evenly rough in my eyes.

Could it be that the nozzle suffered from the clogged nozzle, or that it’s still a bit clogged?

Thanks in advance, for any ideas

Christophe

[Harry_1]

Hi Christophe,

Yes, the nozzle *could* still be partially clogged. Velleman suggests to use a piece of guitarstring to clear blockages - hence, I put together this tool a little while ago: Nozzle cleaner (0.35mm nozzle) by Harry_D60 - Thingiverse

I haven’t had to use it often as yet: only twice, so far. But the guitarstring bit does seem to do the trick…

Hope this helps?

[Tixhyl]

Hi Harry,

Thanks for the tip, i’ll try it this evening

[bmcage]

What layer thickness is this?

Perhaps some slight overextrusion also? Do you use Cura? If so, my profile for the vertex: http://ingegno.be/de-vertex-printer-en-cura/ see Stap 3 for the ini files (rename). I have it at under 100%.

Otherwise, perhaps: Print Quality Guide | Simplify3D Software

[Tixhyl]

This is 200µm, it could be overextrusion… i calibrated my extrusion steps/mm and set my extrusion multiplier to 1.

Thanks a bunch for your Cura profile and troubleshooting guide, i’ll take a look at it.

[Tixhyl]

For anyone wondering, i have fixed this problem. My nozzle was completely broken, probably from crashing into the bed one time. So replacing the nozzle solved the rough prints!

Thanks for the feedback,

Christophe

[Wouter_van_Agtm]

Hey, Sorry, this is a bit off-topic, but where did you get your replacement nozzle?

[Tixhyl]

Hi Wouter, i ordered my replacement nozzle at my local Velleman distributor (http://www.dtron.be/).