most sizes tweaked. x ends igus needs 0.1mm more on dia.

Openscad/bar-clamp-hook-8off.scad

@@ -0,0 +1,61 @@
+// PRUSA Mendel  
+// Bar clamp
+// Used for joining 8mm rods
+// GNU GPL v3
+// Josef Průša
+// josefprusa@me.com
+// prusadjs.cz
+// http://www.reprap.org/wiki/Prusa_Mendel
+// http://github.com/prusajr/PrusaMendel
+
+include <configuration.scad>
+
+/**
+ * @id bar-clamp
+ * @name Bar clamp
+ * @category Printed
+ * @using 2 m8nut
+ * @using 2 m8washer
+ */ 
+
+module barclamp(){
+outer_diameter_y = (m8_diameter-0.0)/2+3;
+outer_diameter_z =outer_diameter_y+1;
+t=true;
+
+difference(){
+	union(){
+
+		translate([outer_diameter_y, outer_diameter_y, 0])cylinder(h =outer_diameter_z*2, r = outer_diameter_y, $fn = 20);
+		translate([outer_diameter_y, 0, 0])cube([outer_diameter_y+1.5,outer_diameter_y*2,outer_diameter_z*2]);
+		translate([18, 2*outer_diameter_y, outer_diameter_z])rotate([90, 0, 0]) rotate([0, 0, 0]) nut(outer_diameter_z*2,outer_diameter_y*2,false);
+		if(t) tongue();
+	}
+
+
+	translate([19, outer_diameter_y, 9])cube([19,5,20], center=true);
+	translate([outer_diameter_y, outer_diameter_y, -1]) cylinder(h =20, r = m8_diameter/2, $fn = 18);
+	translate([17, 17, outer_diameter_z]) rotate([90, 0, 0]) union() {
+		cylinder(h =20, r = m8_diameter/2, $fn = 20);
+		rotate([0,0,135]) translate([m8_diameter,0,10]) {
+			cube([m8_diameter*2,m8_diameter,20],center=true);
+			translate([-m8_diameter/2+2.5,-m8_diameter,0]) cube([m8_diameter,m8_diameter*2,20],center=true);
+		}
+	}
+	translate([0, -0.1, outer_diameter_z+6])cube([35,16,20]);
+}
+}
+tHeight=9;
+module tongue()
+{
+	translate([-16,0,0]) difference() {
+		union() {
+			cube([26,3,tHeight]);
+			translate([0,0,tHeight/2]) rotate([-90,0,0]) cylinder(r=tHeight/2,h=3);
+		}
+		for(i=[0,9.5]) {
+			translate([i,-0.1,tHeight/2]) rotate([-90,0,0]) polyhole(d=3.2,h=6.2);
+		}
+	}
+}
+barclamp();