Added Yopero's improvement for the Y axis (idle stand)

Hardware/Y_axis/idle_stand.scad

@@ -0,0 +1,125 @@
+// Cyclone PCB Factory: a 3D printable CNC machine for PCB manufacture
+// Created by Carlosgs (http://carlosgs.es)
+// License: Attribution - Share Alike - Creative Commons (http://creativecommons.org/licenses/by-sa/3.0/)
+
+use <../libs/obiscad/bcube.scad>
+use <../libs/build_plate.scad>
+
+bottom_thickness = 4;
+base_width = 20;
+base_length = 25;
+base_screw_diameter = 5;
+
+motor_width = 43;
+motor_length = 49; // not used
+motor_screw_distance = 31.3;
+motor_center_diameter = 23;
+
+motor_screw_diameter = 3.7;
+motor_screw_head_diameter = 8;
+
+bearing_diameter = 22.4;
+M8_rod_diameter = 8.2;
+
+axis_distance = 32;
+
+wall_thickness = 5;
+wall_height = 45;
+wall_width = 70;
+
+idler_width = 25;
+
+module motor_stand_no_base(with_motor=true) {
+difference() {
+  translate([wall_height/2,wall_width/2,wall_thickness/2])
+    bcube([wall_height,wall_width,wall_thickness],cr=4,cres=10);
+
+  // Position relative to motor shaft
+  translate([motor_width/2,motor_width/2,wall_thickness/2]) {
+    if(with_motor) {
+    // Hole for the motor shaft
+    translate([0,-wall_width/2,0])
+      cube([20,wall_width,10*wall_thickness],cr=4,cres=10,center=true);
+    cylinder(r=motor_center_diameter/2,h=10*wall_thickness,center=true,$fn=40);
+
+    // Screws for holding the motor
+    for(i=[-1,1]) for(j=[-1,1])
+    translate([i*motor_screw_distance/2,j*motor_screw_distance/2,0]) {
+      cylinder(r=motor_screw_diameter/2,h=10*wall_thickness,center=true,$fn=40);
+      cylinder(r=motor_screw_head_diameter/2,h=10*wall_thickness,center=false,$fn=40);
+    }
+    } // End if with motor
+
+    // Bearing holes
+    rotate([0,0,15]) translate([0,axis_distance,0]) {
+      cylinder(r=(M8_rod_diameter*2)/2,h=10*wall_thickness,center=true,$fn=40);
+      cylinder(r=bearing_diameter/2,h=10*wall_thickness,center=false,$fn=60);
+
+    }
+
+  } // End of translate relative to motor shaft
+} // End of difference
+}
+
+module motor_stand(with_motor=true) {
+  union() {
+    motor_stand_no_base(with_motor);
+    difference() {
+      union() {
+        translate([wall_height-bottom_thickness,wall_width-base_width]) {
+          cube([bottom_thickness,base_width,base_length]);
+          hull() {
+            cube([bottom_thickness,5,base_length]);
+            translate([-18,0,0])
+              cube([0.001,5,0.001]);
+          }
+        }
+      }
+      // --- screws for the base ---
+      translate([wall_height,wall_width-5,15])
+        rotate([0,90,0]) {
+          translate([-5,0,0])
+            cylinder(r=base_screw_diameter/2,h=100,center=true,$fn=6);
+          translate([5,0,0])
+            cylinder(r=base_screw_diameter/2,h=100,center=true,$fn=6);
+        }
+    } // End of difference
+  }
+}
+
+
+module idle_stand() {
+  intersection() { // Remove the motor part
+    motor_stand(with_motor=false);
+    translate([wall_height/2,wall_width/2+35,wall_thickness/2])
+      bcube([wall_height,wall_width,100],cr=4,cres=10);
+  }
+}
+
+//for display only, doesn't contribute to final object
+build_plate(3,200,200);
+
+//motor_stand();
+idle_stand();
+translate([0,105,0])
+    mirror([0,1,0])
+    difference() {
+      union() {
+        translate([wall_height-bottom_thickness,wall_width-base_width]) {
+          cube([bottom_thickness,base_width,base_length]);
+          hull() {
+            cube([bottom_thickness,5,base_length]);
+            translate([-18,0,0])
+              cube([0.001,5,0.001]);
+          }
+        }
+      }
+      // --- screws for the base ---
+      translate([wall_height,wall_width-5,15])
+        rotate([0,90,0]) {
+          translate([-5,0,0])
+            cylinder(r=base_screw_diameter/2,h=100,center=true,$fn=6);
+          translate([5,0,0])
+            cylinder(r=base_screw_diameter/2,h=100,center=true,$fn=6);
+        }
+    }

Hardware/Y_axis/motor_stand.scad

@@ -1,6 +1,9 @@
 // Cyclone PCB Factory: a 3D printable CNC machine for PCB manufacture
 // Created by Carlosgs (http://carlosgs.es)
 // License: Attribution - Share Alike - Creative Commons (http://creativecommons.org/licenses/by-sa/3.0/)
+// History:
+//  - (05/25/2013) Added @yopero's four screw suggestion for the motor stand
+//  - (05/28/2013) Added @yopero's four screw suggestion for the idle stand
 
 use <../libs/obiscad/bcube.scad>
 use <../libs/build_plate.scad>
@@ -119,11 +122,15 @@ module motor_stand(with_motor=true) {
 
 
 module idle_stand() {
-  intersection() { // Remove the motor part
-    motor_stand(with_motor=false);
-    translate([wall_height/2,wall_width/2+35,wall_thickness/2])
-      bcube([wall_height,wall_width,100],cr=4,cres=10);
-  }
+	union() {
+		intersection() { // Remove the motor part
+			motor_stand(with_motor=false);
+			translate([wall_height/2,wall_width/2+52.4-(wall_width+wall_extraWidth_right-52.4),wall_thickness/2])
+			bcube([wall_height,wall_width,100],cr=4,cres=10);
+		}
+		translate([0,wall_width+5-2*(wall_width+wall_extraWidth_right-52.4)]) holder(noScrews=true);
+		translate([0,52.4+5/2]) scale([1,-1,1]) holder(h=15,base_width_inc=1);
+	}
 }
 
 //for display only, doesn't contribute to final object