0.8n doesnt make nice prints  

Maybe not a good idea

I don't know, this doesn't look like a model I'd want to print with a 0.8mm nozzle...

The default extrusion width is 0.9mm in the stock Mini profile for the 0.8mm nozzle, so your 1mm walls are just not appropriate. In particular the rounded ones may well slip below 1 perimeter due to the inherent imprecision of modeling curves with triangles.

title?

but i also placed some standard hollow cubes. they also dont look nice.  and their wall thickness is being handled by the slicer, so their wall thickness should be fine

@phidippus_fan

Save, Zip, Upload a projectfile, (PrusaSlicer 3mf-file). Then it will be much easier for someone to help you 👍 

RE: title?

ive already uploaded this file in 1st post of mine

i choose file and then on save. but it doesnt upload

zip

Did you zip it? The forum software will not allow native 3mf files, they need to be zipped.

RE: 0.8n doesnt make nice prints

@phidippus_fan

You have to zip it, forum does not allow 3mf file

Edit: Too late 😀 

fgfg

and why do have to enter a title every time? this forum software is very .... different

title

Is that oval shape part of the print or is that the skirt? If that is the skirt that would suggest that only the 3 cylinders are printing on the first layer. That would be a problem with the design.

Did you zip the 3mf file? You have to zip the file before uploading.

why o why — I don't know

rar is not zip.

And why you have to enter a title, only the Prusa gods know. This silly behavior was introduced in the latest software update, and there's a lot of complaining about it...

hhj

yes i zipped it with winrar.  skirt is from prusaslicer.  yeah but what has the skirt to do with all the other height layers?

I just hit space bar in title field, the easiest way I can think of....

RE: 0.8n doesnt make nice prints

This particular model is way too small for a 0,8mm nozzle. 
Also, the "boxes" on both side "hangs" in mid air, that is the reason the skirt is "smaller" then than model

And, as said RAR is not zip 😉 (Many on this forum does not like rar)

I haven't done anything to your file, (the file is beyond rescue under these circumstances 😌) just rezipped it