add mid-part from z-holder

Slider_back.scad

@@ -11,8 +11,8 @@ module Slider_back() {
         
 
         dist=(heightMain-holeDist)/2;
-        translate([0,0,dist])  bearingHalfHole();
-        translate([0,0,dist+holeDist]) bearingHalfHole();
+        translate([0,0,dist])  bearingHalfHoles();
+        translate([0,0,dist+holeDist]) bearingHalfHoles();
 
         cubecenter=heightMain/2-rollWithRodDist/2;
         translate([0, 0, heightMain/2]) cube([width, 5, rollWithRodDist]);
@@ -44,12 +44,19 @@ module zcube() {
     translate([0, 0, cubez]) rotate([-90,0,-90]) linear_extrude(width) #polygon([[0,0],[5,0],[0,5]]);  
 }
 
-module bearingHalfHole() {
+function getBearingLength() = bearingLength;
+
+module bearingHalfHoles() {
     sideDist=3;
 
-    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);
+    //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]) bearingHalfHole();
+    translate([width-bearingLength-sideDist,0,0]) bearingHalfHole();
+}
+
+module bearingHalfHole(rodln=bearingLength+10) {
+    #translate([(bearingLength - rodln)/2,0,0]) rotate([0, 90, 0]) cylinder(h = rodln, d = 8+2);
+    rotate([0, 90, 0]) cylinder(h = bearingLength, d = bearingDiam);
 }
 
 module beltHolder() {

ZSlider_holder.scad

@@ -0,0 +1,72 @@
+use <Slider_back.scad>;
+use <helpers/Holes.scad>;
+
+$fn=75;
+
+width = 30;
+length= 40;
+height = 10;
+
+module body() {
+    edgeRound=5;
+ 
+    translate([edgeRound, edgeRound, 0]) minkowski() {
+        cube([width-edgeRound*2,length-edgeRound*2,height/2]);
+        rotate([0, 0, 0]) cylinder(r=edgeRound,h=height/2);
+    }
+}
+
+main();
+module main() {
+    difference() {
+        body();
+        #translate([(width-getBearingLength())/2,20,height]) bearingHalfHole();
+        #holes(11);
+    }
+}
+// the four mount holes
+module holes(h,nuts=true,head=false) {
+    translate([7.5,7.5,0]) {
+        rotate([0,-90,0]) M3Hole(h);
+        if (nuts) {
+            rotate([0,-90,0]) M3Nut(5);
+        }
+
+        if (head) {
+            translate([0,0,h-5]) rotate([0,-90,0]) M3Head(5);
+        }
+    } 
+
+    translate([22.5,7.5,0]) {
+        rotate([0,-90,0]) M3Hole(h);
+        if (nuts) {
+            rotate([0,-90,0]) M3Nut(5);
+        }
+
+         if (head) {
+            translate([0,0,h-5]) rotate([0,-90,0]) M3Head(5);
+        }
+    } 
+
+    translate([7.5,32.5,0]) {
+        rotate([0,-90,0]) M3Hole(h);
+        if (nuts) {
+            rotate([0,-90,0]) M3Nut(5);
+        }
+
+         if (head) {
+            translate([0,0,h-5]) rotate([0,-90,0]) M3Head(5);
+        }
+    } 
+
+    translate([22.5,32.5,0]) {
+        rotate([0,-90,0]) M3Hole(h);
+        if (nuts) {
+            rotate([0,-90,0]) M3Nut(5);
+        }
+
+         if (head) {
+            translate([0,0,h-5]) rotate([0,-90,0]) M3Head(5);
+        }
+    } 
+}

ZSlider_holer.scad

@@ -1,35 +0,0 @@
-use <Slider_back.scad>;
-use <helpers/Holes.scad>;
-
-$fn=75;
-
-main();
-module main() {
-    difference() {
-        cube([30,40,10]);
-        translate([0,20,10]) bearingHalfHole();
-        holes();
-    }
-}
-// the four mount holes
-module holes() {
-    translate([7.5,7.5,0]) {
-        rotate([0,-90,0]) M3Hole(10);
-        rotate([0,-90,0]) M3Nut(5);
-    } 
-
-    translate([22.5,7.5,0]) {
-        rotate([0,-90,0]) M3Hole(10);
-        rotate([0,-90,0]) M3Nut(5);
-    } 
-
-    translate([7.5,32.5,0]) {
-        rotate([0,-90,0]) M3Hole(10);
-        rotate([0,-90,0]) M3Nut(5);
-    } 
-
-    translate([22.5,32.5,0]) {
-        rotate([0,-90,0]) M3Hole(10);
-        rotate([0,-90,0]) M3Nut(5);
-    } 
-}

ZSlider_mid.scad

@@ -0,0 +1,58 @@
+use <Slider_back.scad>;
+use <helpers/Holes.scad>;
+use <ZSlider_holder.scad>;
+
+$fn=75;
+
+module roundcube(x,y,z,rad=5) {
+    hull() {
+        translate([rad,rad,0]) cylinder(r=rad,h=z);
+        translate([x-rad,rad,0]) cylinder(r=rad,h=z);
+        translate([x-rad,y-rad,0]) cylinder(r=rad,h=z);
+        translate([rad,y-rad,0]) cylinder(r=rad,h=z);
+    }
+    
+}
+
+module body() {
+    //cube([49,40,10]);
+    difference(){
+        roundcube(49,40,20);
+        translate([4.5,0,10]) cube([40.3,40,11]);
+    }
+    
+}
+
+difference() {
+    body();
+    #translate([(30 - getBearingLength())/2,20,0]) bearingHalfHole(80);
+    hholes();
+    bigholes();
+}
+
+use <ZSlider_holder.scad>;
+translate([0,0,-10]) main();
+
+module hholes() {
+    holes(11,false, true);
+}
+
+module bigholes() {
+    translate([15,7.5,0]) rotate([0,-90,0]) {
+        M4Hole(11);
+        M4Head(5);
+        };
+    translate([15,32.5,0]) rotate([0,-90,0]) {
+        M4Hole(11);
+        M4Head(5);
+    };
+
+    translate([49-15,7.5,0]) rotate([0,-90,0]) {
+        M4Hole(11);
+        M4Head(5);
+    };
+    translate([49-15,32.5,0]) rotate([0,-90,0]) {
+        M4Hole(11);
+        M4Head(5);
+    };
+}

helpers/Holes.scad

@@ -1,9 +1,13 @@
+//https://de.wikipedia.org/wiki/Durchgangsbohrung
+
 M3HoleDiam = 3.4;
 M4HoleDiam = 4.4;
 
 M3NutDiam=6.01+.4;
 
-M3HeadDiam = 5.8;
+_printoffset=.3;
+M3HeadDiam = 5.5+_printoffset;
+M4HeadDiam = 7+_printoffset;
 
 module M3Hole(thickness) {
     rotate([0, 90, 0]) cylinder(h = thickness, d = M3HoleDiam);
@@ -20,3 +24,7 @@ module M3Nut(thickness) {
 module M3Head(thickness) {
     rotate([0, 90, 0]) cylinder(h = thickness, d = M3HeadDiam);
 }
+
+module M4Head(thickness) {
+    rotate([0, 90, 0]) cylinder(h = thickness, d = M4HeadDiam);
+}