Set the extrusion width (EW) at 0.40 as this should give exactly 5 lines/perimeters to fill the 2mm wall. (2x2 outer perimeters + one single inner line.)
See gcode view below with the test object being sliced with Slic3r.
Within S3D no matter what I try with all the settings you can think off, 3DS slicer engine will ‘refuse’ to fill-up the center lane and instead resort to an infill-mode creating a ‘jitter’ like ‘in-fill’. See gcode view below.
Only when you set the EW to a value that will divide the total width (in this case 2mm) to an even number, example set the EW at 0.5, you will get 4 perimeters that will give you a 2mm solid wall. See gcode view below:
This is a ‘problem’ I already noticed in version 2.1 and also in the just released 2.2 version. No matter what I try with the setting under advanced tab for ‘Thin Wall Behavior’ the ‘problem’ will always persists. 3DS will simply not allow for an odd number (3,5,7,9,etc) of ‘perimeters’ to make a solid wall. If you set 3DS to allow for perimeter overlap (set EW at 0.39 and ‘allowed perimeter overlap at 50%) it will in fact print 2 perimeter lines where it should only put down one perimeter line. See gcode view below.
My request to 3DS development is to allow the slicer engine, similar to Slic3r, to use a straight/single and final perimeter line to make a wall solid if the EW is an exact multiple of the total outer width of the wall.
