slicer issue: thiner diameter

Hi! I've created a small rod with a hole in the one half of the rod and after its slicing I've find out that the half of the rod has smaller diameter than it should have!
Look at the attachment please. I use Slic3r 1.1.7, 0.2 layer height. I think it's not correct output of the slicer, or?

Model of the tube:

$fn = 50;
e = 0.1;

h1 = 10;
h1_full = 5;
h2 = 6;

h1_diameter_in = 3.4;
h1_diameter_out = 5;
h2_diameter_out = 2.6;

difference() {
cylinder(h1, h1_diameter_out/2, h1_diameter_out/2);
#translate([0,0,-h1_full-e]) cylinder(h1+2*e, h1_diameter_in/2, h1_diameter_in/2);
}
translate([0,0,h1]) cylinder(h2, h2_diameter_out/2, h2_diameter_out/2);

What is your nozzle-size? What is your setting in slic3r as default extrusion width?

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here are the params:

• nozzle-size: 0.4 mm
• default extrusion width: 0.5 mm

Ok, I expected that.
Change your extrusion width to 0.4. Then it should be better.

Your default extrusion width don't fit (5 - 3.4) / 2 = 0,8mm.
2x 0.5mm > 0.8mm
1x 0.5mm < 0.8mm
2x 0.4mm = 0.8mm

---

Triffid Hunter's Calibration Guide

--> X <-- Drill for new Monitor

Most important Gcode.

That makes sense.
Thanks Wurstnase!