add mounting holes and enlarge rod diam to 10mm

Holes.scad

@@ -1,6 +1,8 @@
 M3HoleDiam = 3.4;
 M4HoleDiam = 4.4;
 
+M3NutDiam=6.01+.4;
+
 module M3Hole(thickness) {
     rotate([0, 90, 0]) cylinder(h = thickness, d = M3HoleDiam);
 }
@@ -8,3 +10,7 @@ module M3Hole(thickness) {
 module M4Hole(thickness) {
     rotate([0, 90, 0]) cylinder(h = thickness, d = M4HoleDiam);
 }
+
+module M3Nut(thickness) { 
+    rotate([0, 90, 0]) cylinder(h = thickness, d = M3NutDiam, $fn=6);
+}

Slider.scad

@@ -1,3 +1,5 @@
+use <Holes.scad>;
+
 $fn=75;
 
 // distance between two rods
@@ -33,6 +35,9 @@ difference() {
 
     translate([0, -5, cubecenter]) beltHolder();
     translate([width, -5, cubecenter]) rotate([0, 180, 0]) beltHolder();
+
+    // add the 4 mountholes
+    MountHoles();
 }
 
 module body() {
@@ -53,7 +58,7 @@ module body() {
 module bearingHalfHole() {
     sideDist=3;
 
-    rotate([0, 90, 0]) cylinder(h = width, d = 8+1); // we are defining +1mm to fit the rod in the hole...
+    rotate([0, 90, 0]) cylinder(h = width, d = 8+2); // we are defining +1mm to fit the rod in the hole...
     translate([sideDist,0,0]) rotate([0, 90, 0]) cylinder(h = bearingLength, d = bearingDiam);
     translate([width-bearingLength-sideDist,0,0]) rotate([0, 90, 0]) cylinder(h = bearingLength, d = bearingDiam);
 }
@@ -72,3 +77,25 @@ module beltHolder() {
         }
     }
 }
+
+module MountHoles() {
+    translate([10,0,65]) {
+        rotate([0,0,90]) #M3Hole(10);
+        translate([0,5,0]) rotate([0,0,90]) M3Nut(5);
+    } 
+    translate([width-10,0,65]) {
+        rotate([0,0,90]) #M3Hole(10);
+        translate([0,5,0]) rotate([0,0,90]) M3Nut(5);
+    } 
+
+
+    translate([10,0,30]) {
+        translate([0,-5,0]) rotate([0,0,90]) #M3Hole(15);
+        translate([0,5,0]) rotate([0,0,90]) M3Nut(10);
+    }
+
+    translate([width-10,0,30]) {
+        translate([0,-5,0]) rotate([0,0,90]) #M3Hole(15);
+        translate([0,5,0]) rotate([0,0,90]) M3Nut(10);
+    }
+}