move holes and helpers into seperate dir

holder for extruder and hexagonal screw mounts

Motorhalter.scad

@@ -1,4 +1,4 @@
-use <Holes.scad>;
+use <helpers/Holes.scad>;
 
 $fn = 50;
 

SliderLeft.scad

@@ -1,5 +1,5 @@
 use <Motorhalter.scad>;
-use <Holes.scad>;
+use <helpers/Holes.scad>;
 
 MountSize = 40;
 BodyWidth = 55;

Slider_back.scad

@@ -1,8 +1,9 @@
-use <Holes.scad>;
+use <helpers/Holes.scad>;
 include <Slider_dims.scad>;
 
-
+Slider_back();
-difference() {
+module Slider_back() {
+    difference() {
         union() {
             body();
             zcube();
@@ -21,8 +22,10 @@ difference() {
 
         // add the 4 mountholes
         MountHoles();
+    }
 }
 
+
 module body() {
     edgeRound=1.5;
  

Slider_dims.scad

@@ -12,8 +12,9 @@ heightMain=90;
 width=60;
 depth=10;
 
-bearingLength=24;
+// bearing dimensions with little offsets to fit
-bearingDiam=15;
+bearingLength=24+.4;
+bearingDiam=15+.2;
 
 twoRodSize=2.2;
 middleCylinderRad=2.5;

Slider_front.scad

@@ -1,9 +1,19 @@
 use <Slider_back.scad>
-use <Holes.scad>
+use <helpers/Holes.scad>
+use <helpers/Helpers.scad>
 include <Slider_dims.scad>
 
-difference() {
+roundedExtruderHolder=true;
+
+Slider_front();
+module Slider_front() {
+    difference() {
+        union() {
+            // use same body as in back slider
             translate([0,-10,0]) body();
+            Extruderholder();
+        }
+        
 
         dist=(heightMain-holeDist)/2;
         translate([0,0,dist])  bearingHalfHole();
@@ -15,15 +25,92 @@ difference() {
         translate([0, -5, heightMain/2]) cube([width, 5, rollWithRodDist]);
 
         // add the 4 mountholes
-    translate([0, -5, 0]) MountHolesFront();
+        translate([0, -10, 0]) MountHolesFront();
+
+        // cut extruder holes
+        Extruderholes();
+    }
 }
 
+
 // Similar function from Slider_back without the hexagonal holes
 module MountHolesFront() {
-    translate([holeLeftRightMargin,-5,holeTop]) rotate([0,0,90]) #M3Hole(10);
+    translate([holeLeftRightMargin,0,holeTop]) rotate([0,0,90]) {
-    translate([width-holeLeftRightMargin,-5,holeTop]) rotate([0,0,90]) #M3Hole(10);
+        #M3Hole(10);
+        M3Head(5);
+    }
 
 
-    translate([holeLeftRightMargin,-5,holeBottom]) rotate([0,0,90]) #M3Hole(10);
+    translate([width-holeLeftRightMargin,0,holeTop]) rotate([0,0,90]) {
-    translate([width-holeLeftRightMargin,-5,holeBottom])  rotate([0,0,90]) #M3Hole(10);
+        #M3Hole(10);
+        M3Head(5);
+    } 
+
+
+    translate([holeLeftRightMargin,0,holeBottom]) rotate([0,0,90]) {
+        #M3Hole(10);
+        M3Head(3);
+    } 
+    translate([width-holeLeftRightMargin,0,holeBottom]) rotate([0,0,90]) {
+        #M3Hole(10);
+        M3Head(3);
+    } 
+}
+
+
+extruder_diam=21.75;
+extruder_flatdist=16;
+// offset height needed to place the extruder straight on the surface 
+extruder_offset=(extruder_diam-extruder_flatdist)/2;
+extruder_platform_width=15;
+extruder_platform_height=10;
+extruder_platform_x=18.25;
+
+
+module Extruderholder() {
+    translate([0, -10-extruder_offset, extruder_platform_x+extruder_platform_height/2]) hull() {
+            translate([width/2 - extruder_platform_width/2, 0, 0]) 
+        rotate([-90, 0, 0]) cylinder(d=extruder_platform_height, h=extruder_offset);
+
+        translate([width/2 + extruder_platform_width/2, 0, 0]) 
+        rotate([-90, 0, 0]) cylinder(d=extruder_platform_height, h=extruder_offset);
+
+        if(roundedExtruderHolder) {
+            // no rounded edges on bottom
+            translate([width/2 - extruder_platform_width/2 - extruder_platform_height/2, 0, -extruder_platform_height/2]) 
+            cube([extruder_platform_width + extruder_platform_height, extruder_offset, extruder_platform_height/2]);
+        } 
+    }
+    
+
+    depth=10;
+    roundhelperwidth=extruder_diam+3;
+
+    difference() {
+        union() {
+            // bottom cube
+            translate([width/2 - roundhelperwidth/2, -10-depth, 0]) cube([roundhelperwidth, depth, 5]);
+            // the triangle over it
+            // linear_extrude(roundhelperwidth) #polygon([[0,0],[5,0],[0,5]]); no rounded triangle
+            translate([width/2 - roundhelperwidth/2, -10, 5]) rotate([0, -90, 180]) roundedTriangle(roundhelperwidth, 5);  
+        }
+        
+        translate([width/2, -10-extruder_diam/2, 0]) cylinder(d=extruder_diam, h=15, $fn=125);
+    }
+}
+
+module Extruderholes() {
+    // hole distance from each other
+    holeDist=14;
+
+    translate([width/2 + holeDist/2, 0, extruder_platform_x + extruder_platform_height/2]) {
+        rotate([0,0,-90]) #M3Hole(15);
+        rotate([30,0,-90]) #M3Nut(8);
+    }
+
+
+    translate([width/2 - holeDist/2, 0, extruder_platform_x + extruder_platform_height/2]) {
+        rotate([0,0,-90]) #M3Hole(15);
+        rotate([30,0,-90]) #M3Nut(8);
+    }
 }

ZMotorHalter.scad

@@ -1,5 +1,5 @@
 use <Motorhalter.scad>;
-use <Holes.scad>;
+use <helpers/Holes.scad>;
 
 $fn = 50;
 

helpers/Helpers.scad

@@ -0,0 +1,6 @@
+module roundedTriangle(length, sidewidth) {
+    render() difference() {
+        linear_extrude(length) polygon([[0,0],[sidewidth,0],[0,sidewidth]]);
+        translate([sidewidth, sidewidth, 0]) cylinder(r=sidewidth, h=length);
+    }
+}

helpers/Holes.scad

@@ -3,6 +3,8 @@ M4HoleDiam = 4.4;
 
 M3NutDiam=6.01+.4;
 
+M3HeadDiam = 5.8;
+
 module M3Hole(thickness) {
     rotate([0, 90, 0]) cylinder(h = thickness, d = M3HoleDiam);
 }
@@ -14,3 +16,7 @@ module M4Hole(thickness) {
 module M3Nut(thickness) { 
     rotate([0, 90, 0]) cylinder(h = thickness, d = M3NutDiam, $fn=6);
 }
+
+module M3Head(thickness) {
+    rotate([0, 90, 0]) cylinder(h = thickness, d = M3HeadDiam);
+}