Is there any way that i can replace the 0.5 nozzle with a much finer one 0.1-0.2 , that would improve my prints.
I am not sure but i think you will have to go for another hotend like E3D if you want different nozzle sizes.
Hi tribalgent,
you might have to switch not only to a different hotend, but to a different extruder for that. Reducing the diameter to 1/5 decreases the cross-section to 1/25, so the necessary pressure in the hotend will be much higher, not even counting the effect of surface tension.
0.25 mm can work, when using a different transport screw, and with reduced feedrate due to the above mentioned issues.
Cheers,
kuraasu
Hi
I’m not sure if a nozzle size that small will improve your prints all that much.
I’m currently using a 0.4mm nozzle with the E3D hotend. That did improve print quality, but mainly due to the better construction of the E3D HE. E3D offer several nozzle diameters down to 0.25mm. I guess the K8200 could handle that, although I havn’t tested it myself (have a 0.25mm nozzle lying around here, but I’m still busy getting the most out of the 0.4mm nozzle that’s delivered as standard with the E3D hotend).
You should also take into consideration that nozzle diameters that small will massively extend printing time: more layers and more “tracks” per layer. You might end up with worse quality, as for small parts the time per layer will be to long and the top layer will not be able to cool down in time. That might tend the filament of the next layer to drag away the underlying layer. You’ll need to adjust the settings to allow enough time to cool down.
Conclusion:
A smaller nozzle diameter will NOT automatically improve print quality.
Regards
Hi
I’m not sure if a nozzle size that small will improve your prints all that much.
I’m currently using a 0.4mm nozzle with the E3D hotend. That did improve print quality, but mainly due to the better construction of the E3D HE. E3D offer several nozzle diameters down to 0.25mm. I guess the K8200 could handle that, although I havn’t tested it myself (have a 0.25mm nozzle lying around here, but I’m still busy getting the most out of the 0.4mm nozzle that’s delivered as standard with the E3D hotend).
You should also take into consideration that nozzle diameters that small will massively extend printing time: more layers and more “tracks” per layer. You might end up with worse quality, as for small parts the time per layer will be to long and the top layer will not be able to cool down in time. That might tend the filament of the next layer to drag away the underlying layer. You’ll need to adjust the settings to allow enough time to cool down.
Conclusion:
A smaller nozzle diameter will NOT automatically improve print quality.
Regards[/quote]
great info thx :), wel i am still looking for the best slicer tweakoptions, i have the feeling the printer can do better, if you look at the other printers now arround the same price, they are getting better and faster, i hope that the velleman team do some research on how to better the k8200, i have it for almost a year now and i must say i dont see that manny updates or newer parts comming out 
, it is cool that most of the people that have the printer test it out i every way they can, but it should be velleman team that should give us good info also
grtz
Hi
I understand your statement.
However: the K8200 community is and will always be much larger than the Velleman team can ever be (and good for that, means the K8200 is selling well 
)
So you will always find the most improvement ideas from the community.
What have you tried so far?
The main improvements for the K8200 are (what I think):
- improving the Z axis motor holder and using a flex coupler between the motor and the M8 rod
- improving the motor holders for X- and Y- axis and getting the belt tension right
- changing to E3D hot end (also helps a lot with changing filament, as it’s far easier to pull out)
- the main thing: tweeking the slicer settings. This of course is individual for every printer and used filament, so no general setting can be provided.
Regards