diff --git a/DESSINS-DXF-OPENSCAD/rotule.dxf b/DESSINS-DXF-OPENSCAD/rotule.dxf
new file mode 100644
index 0000000..79ef861
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diff --git a/DESSINS-DXF-OPENSCAD/rotule.scad b/DESSINS-DXF-OPENSCAD/rotule.scad
new file mode 100644
index 0000000..5027e39
--- /dev/null
+++ b/DESSINS-DXF-OPENSCAD/rotule.scad
@@ -0,0 +1,16 @@
+/* Reprap jeanne
+* noyau de fixation entre le systeme de glissement et les biellettes
+*/
+$fn=200;
+difference(){
+	union(){
+		translate ([0,0,12]) sphere(7);
+		translate ([0,0,4]) sphere(7);
+		translate ([0,0,3.99]) cylinder(r=7,h=8.02);
+	}
+	union(){
+		translate([0,8,12]) rotate([90,0,0]) cylinder(r=1.8,h=16);
+		translate([-8,0,4]) rotate([90,90,90]) cylinder(r=1.8,h=16);
+	translate([-10,-10,-10]) cube([20,20,10]);
+	}
+}
\ No newline at end of file
diff --git a/README.md b/README.md
index f50a8e2..5d897ed 100644
--- a/README.md
+++ b/README.md
@@ -18,11 +18,21 @@ Un nouvéau dépot git tout neuf qui reprendra pas mal d'éléments du précéde
 ##Fixation moteurs en haut des axes
 ##Glissements le long des axes
 
-Le STL ext dans le dossier STL de ce dépot et les fichiers de constructions dans le dossier DESSINS-DXF-OPENSCAD
+Le STL est dans le dossier STL de ce dépot et les fichiers de constructions dans le dossier DESSINS-DXF-OPENSCAD
 
 ![image](https://raw.githubusercontent.com/jeannedhack/reprapJeanneV2/master/img/glissement.png)
 
 ##Rotules pour fixer la biellette aux glissements et à la plateforme
+
+
+C'est la pièce qui sert d'articulation au niveau des bielletes
+###Projection orthogonale
+![image](https://raw.githubusercontent.com/jeannedhack/reprapJeanneV2/master/img/rotule.png)
+
+###Vu 3D
+![image](https://raw.githubusercontent.com/jeannedhack/reprapJeanneV2/master/img/rotule3D.png)
+Le STL est dans le dossier STL de ce dépot et les fichiers de constructions dans le dossier DESSINS-DXF-OPENSCAD
+
 ##Pièce de liaison biellete / rotules
 ##Plateforme d'extrusion
 ##Bowden
@@ -38,4 +48,4 @@ Le STL ext dans le dossier STL de ce dépot et les fichiers de constructions dan
  
 # Contribuer:
 
-Le plus simple est de venir nous rencontrer, le lundi soir, vers 20 h au hackerspace Jeannedhack (Rouen - France):  [https://www.jeannedhack.org/](https://www.jeannedhack.org/)
+Le plus simple est de venir nous rencontrer, le lundi soir, vers 20 h au hackerspace Jeannedhack (Rouen - France):  [https://www.jeannedhack.org/](https://www.jeannedhack.org/)3
diff --git a/img/rotule.png b/img/rotule.png
new file mode 100644
index 0000000..cdb5436
Binary files /dev/null and b/img/rotule.png differ
diff --git a/img/rotule3D.png b/img/rotule3D.png
new file mode 100644
index 0000000..9eadf9b
Binary files /dev/null and b/img/rotule3D.png differ