Shiny Print problem
Hello.
We have completely different prints coming from two printers. They were setup at the same time.
One of them does smooth prints, the other one comes very shiny.
Same settings on both of them PLA 200 degrees. Tried various speeds / tempratures with no luck.
Any one able to point me in right direction ? Pretty new to this, so no clue where to start. 
The thermistor on one may be under reading slightly, try dropping the print temperature by 5 degrees.
Cheerio,
RE: Shiny Print problem
Have tried that already. Been down to 170 with no luck
RE: Shiny Print problem
Are both the printers in question Prusa I3?
Regards
-Bob
Prusa I3 Mk2 kit upgraded to Mk2.5s, Ender3 with many mods, Prusa Mini kit with Bondtech heat break, Prusa I3 Mk3s+ kit
RE: Shiny Print problem
They are I3 MK3S
I believe we have swapped all parts from other printers from the same model and that didn't help.
RE: Shiny Print problem
Same issue here. I have two MK3S one has a nice matte finish and one is looks shiny and low quality. Very frustrating.
RE: Shiny Print problem
Peculiuar. Have you tried printing temperature towers with both printers at identical profiles (especially speed settings) with the same filament?
Mk3s MMU2s, Voron 0.1, Voron 2.4
RE: Shiny Print problem
Yeah, we tried exactly same settings on various printers. We swapped all parts. There is litterally nothing we can think of we haven't done.
We moved buildings so even outside factors can be ruled out.
RE:
I do have the exact same problem, any filament i try to print came out very shine and show a lot of printing imperfection in comparison with a friends Mk3S.
We have print with same spool, same gcode, and the problem is always the same.
If i drop the temperature the parts continue very shiny, on my friend printer that do not happen.
Temp. tower do not show any difference on outer shell, but if i drop a lot the temp. the extruder start to tick, and jam after few layers.
The temperature indication on LCD fluctuate 1º on both printers, i do not think this is a Thermister issue
Until i did see your post i was think this was a filament issue that only happens to me, but for what i see we have something happening here.
I have a spare thermistor and heat cartridge, i will swap just to remove this from equation, but for me this do not make any sense.
I do have a lot of printing issues principal in small parts that have a lots of retractions, the same Gcode and same filament do not produce any issue on the other printer.
Regards,
RE: Shiny Print problem
another point i forgot to mention, is that on my printer i do have lot's of stringing, the same gcode on the other printer came out with very little tringing, the filament is totally dry.
All this things point me to a temperature issue.
- Strings
- Jams
- Shine parts
RE: Shiny Print problem
One more thing. Could it be the nozzles? Have you swapped the nozzles between machines?
If that doesn't change anything I don't know either but then it really must be something about temperature nonetheless. What else could it be?
Mk3s MMU2s, Voron 0.1, Voron 2.4
RE: Shiny Print problem
Try raising your zero offset. Mine looks much better now.
RE: Shiny Print problem
We are waiting on some new, upgraded, extruders to come in, will see if that can somehow help.
''If that doesn't change anything I don't know either but then it really must be something about temperature nonetheless. What else could it be?'' We have over 80 printers and some of them just do it ouf of the box, so no explanation.
RE: Shiny Print problem
I know what caused your prints to be shine. You probably changed cooling fan , most likely you installed it the other way. Check if the label is facing the hot end