: Every printer is different; finding the exact "sweet spot" within the range will ensure optimal flow and surface consistency.
You can find these specialty filaments at retailers like SpiderMaker's Amazon Store or specialized 3D printing shops like CubicSky and OzFDM .
: If you see gaps or over-extrusion, adjust your "flow factor" or extrusion multiplier in your slicer to perfectly align the outer walls.