Print Quality check / Optimization

Vertex 3D Printer Vertex - Issues while printing
1

Hi Guys,

after a break of nearly one year I am back again and trying to get my k8400 to run. So I downloaded the velleman keychain file and here is the result:

IMG_20161218_162016.jpg3264×1840

IMG_20161218_162034.jpg3264×1840

I am using MatterControl on Mac OS X with 1.75 PLA at 190°C.

  • The print Layer Height was 0.1mm

I used some settings from the board and

  • changed the Retraction Speed to 110mm/s
  • Retraction Length to 4mm

Whats the maximum speed for good results?
Is this a good result and how can I get better results within the bridged area?
Any suggestions?

I tried to make some bridge tests but i wasnt able to determine the correct settings for good results. I will show some pictures later when I’m back at home.