If your parts requires support material, you need to carefully remove them without damaging your part. Use a pair of flat pliers to break the support structures away. Grip the structures with the pliers, twist and slowly pull the material off.
Sometimes the support material will leave behind some build lines on the surface of the part. You can use a hobby knife or palette knife to scrape these artifacts from the surface.
Use flush diagonal futters to snip off any string or bumps. The flush edge of the snips allow you to pick off any unwanted bits. Stringy excess may appear from the retraction during printing, simply pluck or snip them off.
Depending on the features and geometry of your object, the surface quality will be variable. It may not be 100% perfect everytime.
No crossing means no oozing. Material won't oozle from the nozzle with parts that are around 34mm wide. That's actually the distance between the two nozzles (at least on a MK8 dual head). If your part is that small, the printer head won't cross over the part, avoiding any sort of oozing.
- Use the extruder closest to the active cooling fan for features with most surface area.
- Use extruder furthest away from cooling fan for details such as color.