21

I have been experimenting with Marvin last year and learned a few things:

  • the smaller the object the more important it is to have proper cooling
  • also very important is to set the right filament diameter, small flowrate errors can ruin the print at such a smale scale
  • use Tantillus calculator to calculate the right extrusion width and height, I couldn’t dream of such results before using it

http://www.deltarap.org/printing-small-objects-with-a-bowden-extruder/

I also don’t have a fan in the printer but beside it:

http://forums.reprap.org/read.php?262,388684,391190#msg-391190