I just recently bought the mk3s. I've had my eye on the Prusa printers for a long time now and am glad I can finally say I own one. However, I am coming from (and still own) a Zortrax M200 which is super plug-n-play but also limited and almost un-hackable.
I bought my M200 during a promo which came with a mountain of their propietary filaments (z-ultrat, z-abs, etc) and years later still have said mountain. The only non Zortrax filaments I currently have is the spool that came with my mk3s.
So, I would love to be able to use these filaments (z-ultrat especially) on the mk3s, but they are proprietary and thus the available info on printing them on other machines is essentially non-existant. I've tried tweaking a bunch of different settings the past couple of days since I've received my printer but to no avail.
For reference, I printed the same part with the included PLA and it came out significantly better.
Here is a link to the z-ultrat which has a downloadable material info pdf as well.
Any ideas, advice, insight would be very welcome.
UPDATE: I am trying a print with ASA settings. It appears to be coming out better (although still not ideal). I will report back if I can figure out anything further.
UPDATE: I now think it was mostly the fan settings that were causing issues. I don't think the fan was coming on at all before. Not sure why. Maybe because it was set to ABS with the "fan always on" option disabled. It is a small part so I think that was probably the issue. Anyhow, it is working better now.
From the research I did, the temp for z-ultrat is 260 celcius for anyone interested.