Is this kind of quality normal?
Greetings, these aren't our first prints in particular, we did plenty of functional ones for the workshop before, but we're getting frustrated getting our printer to do some actual nice looking show pieces now.
So far we reassembled the machine one and a half times over the last week and made sure everything is squared and every bolt is set just like the assembly. Unfortunatley support only told us to tighten our belts/affirmed via video it's good now(state yesterday).
So are we just expecting too much?
Here's a yesterday night failed print(here's the part where it got us really frustrated) and a sanding aid from yesterday, both done in PETG.
Note the gaps between lines.
MK4(without s)
Firmware 6.1.3
Prusaslicer 2.8.1 - 0.2 structural profile with IS
Edit: grammar
RE: Is this kind of quality normal?
That's not near the quality I get from PETG, but I remember I had to spend some time to get the material dialed in before I got good results. Some of the issues (rough top layer, the black parts) look like you might have problems with under-extrusion or nozzle temperature. The 3rd part looks like it has ringing issues but it's hard to say. And it looks like the infill pattern is showing on the face (does it have an infill?). If so, increasing the nr. of perimeter walls can reduce that speckled effect.
It's hard to say from a few pictures, but what I would try:
- Print the same part in a more forgiving material like PLA, with which you've gotten good results before (to eliminate issues with the printer itself)
- Swap nozzle or do a cold pull.
- Check printer settings against the filament manufacturer's recommendations (keep in mind that these may be off, as I found out).
- Print a few small test objects in PETG and see how they come out. Make small modifications to flow rate and temperature.
RE: Is this kind of quality normal?
Sorry, i thought this was already burried. Thanks nonetheless for your answer!
In the end we approached the whole round of everything,
- Y-rail bearings got replaced by new, Misumi ones
- Y-rail bearing mount got replaced by printed ones
- Y-rail rod mounts got replaced
Somewhere along this way the ringing and bumped corners disappeared.
Regarding the underextrusion, we tried several flow test, but got inconsistent results. Drying didn't help.
We tried another brand(AzureFilm) and thinks started to work as expected. In the end we just threw the old filament away.
Still pretty bummed by the absolut lack of help from the official Prusa support, but at least the community seems to have figured out most kinds of issues.