Filament not sticking well to other filament/stringing...  

Filament not sticking well to other filament/stringing...

Hi all:

I recently purchased a Prusa Mini. Have been an Ender 3 guy for a couple years now. I had this Prusa Mini dialed in and it has been creating very good prints for our company for about a week. My son came home from college and messed with the Prusa slicer. I then started working on it and it crashed. Bottom line is I lost all of the settings I had dialed in. 

Now the prints are very stringy and the filament is not sticking to filament that is already down. This is not a first layer issue. That seems fine with the test. Although even that seems to fail because the last square hardly gets created because each string of filament is almost independent. 

I do know the filament is good. I also have tried several other rolls and am getting the same results. This filament is also printing fine on my Ender printers. I also know that when things were printing well, the following was true:

temp:200c, bed:60c, layer height .1mm

What I can't remember were the speed overrides and retraction settings. I have tried a half a dozen different iterations and am getting very similar results. This printer has been modified to have a NozzleX .25 nozzle. We need to print in very deep detail. I have updated the Extruder1 parameter to match that nozzle size. Otherwise this Prusa Mini is stock.

Attached are a couple of pictures. What I will say is the pieces I print seem weak. It is like the layers are not sticking to one another. I know that is usually associated with temp, but I know I had outstanding prints with the 200/60 parameters. This is also the temp I print with on the Enders.

Some other things I have done..

1) reinstalled the Prusa Slicer (ver 2.2.o)

2) Taken out the nozzle and made sure it was very clean. I really don't think I have a clogging problem (that I can tell)

3) printed 20mm calibration cube. Measures almost perfectly.

This was like a lightswitch issue. One print was perfect. Then I had to "recreate" my project and all of the prints since then have been horrible. Leads me to believe it is a Slicer issue.

If anyone has a project file I could start with that is dialed into very high quality prints at the line height (or even slightly less) I would be open to trying that.

Thanks in advance for any and all help! Love this forum btw.

Pic showing the lack of filament adhesion I was able to just peel this back with my fingers (cube pic).