alexrj/Slic3r — Issue #24: Detection of thin walls
Author: alexrj
Created: 2011-10-28 12:24:17+00:00
State: open

**Definition:** a thin wall is a part of your model whose thickness in the XY plane is <= extrusion width.

Slic3r currently ignores them and produces no extrusion. This is because it tries to draw an outline for the part (that is, 2*extrusion width). We need an algorithm to detect these parts and one to generate a single-path extrusion for them

**Detection of thin-walls:** remove unprintable features, then subtract the result from the original model.

Now the question is: given a thin polygon (with variable thickness and direction), how can we detect its primary axis?