diff --git a/Printed-Parts/stl/x-carriage.scad b/Printed-Parts/stl/x-carriage.scad
new file mode 100644
index 0000000..8bc02a9
--- /dev/null
+++ b/Printed-Parts/stl/x-carriage.scad
@@ -0,0 +1,386 @@
+// PRUSA iteration4
+// X carriage 2.5 upgrade
+// GNU GPL v3
+// Josef Průša <iam@josefprusa.cz> and contributors
+// http://www.reprap.org/wiki/Prusa_Mendel
+// http://prusamendel.org
+
+use <bearing.scad>
+
+module belt_cut()
+{
+    rotate([0,0,180]) 
+    {
+    translate([-20,0,0]) cube([39,0.75,15]);
+    translate([-20,0,5]) rotate([-7,0,0]) cube([39,0.75,10]);
+    translate([-20,0,5]) rotate([10,0,0]) cube([39,0.75,10]);
+     for (_step =[-20:2:18])
+        {
+            translate([_step,0.5,0]) cube([1,1.0,10]);
+        }
+        for (_step =[-20:2:18])
+        {
+            translate([_step,0.5,5]) rotate([-7,0,0]) cube([1,1,10]);
+        }
+    }
+}
+
+
+
+module left_belt_cut()
+{
+
+        translate([-22.5,30.2,7]) cylinder(r=1.5, h=100, $fn=30);
+        translate([-23.0,20,7]) cube([2,10,30]);
+        translate([-56.5,28.5,7]) belt_cut();
+        translate([13.5,20.5,0]) rotate([0,0,25])
+        {
+            difference()
+            {
+            translate([-56.5,28.5,7]) belt_cut();
+            translate([-80,25,7]) cube([37.5,10,30]);
+            }
+        }
+        translate([13.2,2.38,0]) rotate([0,0,0])
+        {
+            difference()
+            {
+            translate([-56.5,28.5,7]) belt_cut();
+            translate([-82.42,25,7]) cube([37.5,10,30]);
+            }
+        }
+        translate([-45,17.6,4]) rotate([0,0,-15]) cube([10,3,30]);
+        translate([-31.5,30.4,10]) rotate([-10,0,15]) cylinder(r=0.2, h=100, $fn=30);
+        translate([-31.6,30.75,7]) rotate([0,0,0]) cylinder(r=0.2, h=100, $fn=30);
+}
+
+
+module right_belt_cut()
+{
+        // right belt cut
+        translate([-9.6,29.7,7]) cylinder(r=1.5, h=100, $fn=30);
+        translate([-11.1,19.8,7]) cube([2,10,30]);
+        translate([22.5,25.5,7]) belt_cut();
+        translate([66.65,1.95,0]) rotate([0,0,0])
+        {
+            difference()
+            {
+                translate([-56.5,28.5,7]) belt_cut();
+                translate([-71.55,25,7]) cube([37.5,10,30]);
+            }
+        }
+        translate([43.2,-30.25,0]) rotate([0,0,-30])
+        {
+        difference()
+            {
+                translate([-56.5,28.5,7]) belt_cut();
+                translate([-82.1,25,7]) cube([10,10,30]);
+                translate([-61.5,25,7]) cube([20.5,10,30]);
+            }
+        }
+        translate([2,14.6,7]) rotate([0,0,15]) cube([10,3,30]);
+        translate([-5.1,30,10]) rotate([-10,0,-15]) cylinder(r=0.2, h=100, $fn=30);
+        translate([-5,30.3,7]) rotate([0,0,0]) cylinder(r=0.2, h=100, $fn=30);
+}
+    
+    
+    
+
+module x_carriage_body(){
+    
+    // Small bearing holder
+    translate([-33/2,0,1]) rotate([0,0,90]) horizontal_bearing_base(1);
+ 
+    // Long bearing holder
+    translate([-33/2,45,1]) rotate([0,0,90]) horizontal_bearing_base(2);
+ 
+    // Base plate
+    translate([-34,-14,1]) cube([34.5,70.5,6]);
+    translate([-33,-15,1]) cube([33,7,14]);
+    translate([-42.5,53.0,1]) cube([52,6.5,14]);
+ 
+    difference()
+    {
+        union()
+        {
+            translate([-12,30,1]) rotate([0,0,45]) cube([6,6,14]);
+            translate([-20,30,1]) rotate([0,0,45]) cube([6,6,14]);
+        }
+        translate([-25,38,11]) rotate([43,0,0]) cube([20,8,8]);
+    }
+ 
+    // upper motor screw block
+    translate([-23,56.8,1]) rotate([0,0,0]) cube([32.5,18.2,7]); 
+    
+    // Belt holder base
+    translate([-42.5,20,1]) cube([52,16,6]);
+     
+    // new belt holder base block
+    translate([-42.5,18,7]) cube([52,16.3,8]);
+    
+    
+}
+
+
+
+module x_carriage_holes(){
+    // Small bearing holder holes cutter
+    translate([-33/2,0,0]) rotate([0,0,90]) horizontal_bearing_holes_nozip(1);
+    
+    // Long bearing holder holes cutter
+    translate([-33/2,45,0]) rotate([0,0,90]) horizontal_bearing_holes_nozip(2);
+  
+    // upper ziptie right
+    translate([2,0,0])
+    difference()
+        {
+        translate([0.75,45,12]) rotate([0,90,0]) cylinder(r=10.8, h=3.5, $fn=50);   
+        translate([0,45,12]) rotate([0,90,0]) cylinder(r=9, h=6, $fn=50);
+        }
+    // upper ziptie left
+    translate([-38,0,0])
+    difference()
+        {
+        translate([0.75,45,12]) rotate([0,90,0]) cylinder(r=10.8,h=3.5,$fn=50);   
+        translate([0,45,12]) rotate([0,90,0]) cylinder(r=9, h=6, $fn=50);
+        }
+    
+    // upper ziptie head
+    translate([0,52.5,12]) cube([10,10,5]); 
+    translate([-45,52.5,12]) cube([13.5,10,5]); 
+    
+    // Extruder mounting holes
+    translate([-17.5+12,24.5,-1])cylinder(r=1.65, h=20, $fn=50);
+    translate([-17.5+12,24.5,0.9])cylinder(r1=2.0,r2=1.65, h=1, $fn=50);
+    translate([-17.5+12,24.5,12])cylinder(r=5.8/2, h=20, $fn=50); 
+    translate([-16.5-12,24.5,-1])cylinder(r=1.65, h=20, $fn=50);
+    translate([-16.5-12,24.5,0.9])cylinder(r1=2.1,r2=1.65, h=1, $fn=50);
+    translate([-16.5-12,24.5,12])cylinder(r=5.8/2, h=20, $fn=50); 
+    
+    // Carriage slimer
+    translate([-55.5+3,19,-1])cube([10,40,30]);
+    translate([+12.5-3,19,-1])cube([10,40,30]);
+    
+    translate([+12.5-3.5-2,30.8,-1])rotate([0,90-65,0])cube([10,55,30]);
+    translate([-55.5+6.7+2,19,-10])rotate([0,-90+65,0])cube([10,40,30]);
+   
+}
+
+module x_carriage_fancy()
+{
+    // Top right corner
+    translate([11.5,8,0]) translate([0,45+11.5,-1]) rotate([0,0,45]) translate([0,-15,0]) cube([30,30,20]);
+    
+    // Top left corner
+    translate([-33-13.5,-5,0]) translate([0,45+11.5,-1]) rotate([0,0,135]) translate([0,-15,0]) cube([30,30,20]);	
+ 
+    translate([-27,74.5,9]) rotate([0,45,0]) translate([0,-15,0]) cube([5,25,5]);	   
+    translate([-23,86,16]) rotate([45,0,0]) translate([0,-15,0]) cube([45,5,5]);	   
+    
+    // bottom side edges
+    translate([-40,-15,-5]) rotate([30,0,0]) cube([45,6,15]);
+    translate([-35,-19.2,0]) rotate([0,0,45]) cube([6,6,16]);
+    translate([2,-19.2,0]) rotate([0,0,45]) cube([6,6,16]);
+    
+    translate([2,55.9,12]) rotate([0,0,45]) cube([6,6,16]);
+    translate([-33.5,55.9,12]) rotate([0,0,45]) cube([6,6,16]);
+    
+}
+
+module cable_tray(){
+    
+    // center screw block
+    translate([-21,23,1]) cube([9,12,14]); 
+    
+    difference()
+    {    
+        union()
+        {
+            translate([-20.8,24.8,1]) rotate([0,0,20]) cube([3,10,14]); 
+            translate([-15.5,25.8,1]) rotate([0,0,-20]) cube([3,10,14]); 
+        }
+        translate([-25,34.2,1]) cube([20,10,14]); 
+    }
+    
+    translate([6.5,32,10]) cube([3,5,5]); 
+    translate([-42.5,32,10]) cube([4,5,5]); 
+    
+    //Left cable tray
+    translate([-39.9,11,1]) cube([9,2,14]); 
+    translate([-39.9,5.5,1]) cube([9,2,14]); 
+    
+    //Right cable tray
+    translate([-2,5.5,1]) cube([11.45,2,14]);
+    translate([-2,11,7]) cube([11.45,2,8]);
+    
+    translate([-31,11.5,7]) cube([30,1.5,8]);
+        
+    difference()
+    { 
+        translate([0,11,1]) cube([9.50,12,6]);
+        translate([0,6,1])rotate([-30,0,0]) cube([7.5,12,7]);
+        translate([0,3.5,6])rotate([-60,0,0]) cube([7.5,12,7]);
+        translate([0,10+3,-1])cube([7.5,11,6]);    
+    }
+    
+    
+}
+
+
+module final_cutout(){
+    
+    translate([-44,0,16]) rotate([0,45,0]) cube([5,15,5]);
+    translate([6,0,16]) rotate([0,45,0]) cube([5,15,5]);
+    
+    translate([0.5,10+3,-1])cube([7,9.2,6]);    
+    
+    
+    // filament hole
+    translate([-18.5,8.8,0]) rotate([-5,0,0]) cylinder(r=1.52, h=40, $fn=10);  
+    translate([-18.5,9.7,10]) rotate([-5,0,0]) cylinder(r=1.52,r2=2, h=6, $fn=10);  
+    
+    // bottom back mounting screws
+    translate([-6.5,-11,4]) rotate([0,0,0]) cylinder(r=1.65, h=20, $fn=50);  
+    translate([-26.5,-11,4]) rotate([0,0,0]) cylinder(r=1.65, h=20, $fn=50);  
+    translate([-29.3,-14,10]) cube([5.6,7,2.1]);
+    translate([-09.3,-14,10]) cube([5.6,7,2.1]);
+    // better printing bridges
+    translate([-29.3,-12.65,10.35]) cube([5.6,3.3,2.1]);
+    translate([-09.3,-12.65,10.35]) cube([5.6,3.3,2.1]);
+    translate([-28.15,-12.65,10.7]) cube([3.3,3.3,2.1]);
+    translate([-8.15,-12.65,10.7]) cube([3.3,3.3,2.1]);
+    
+    
+    
+    // x-carriage-back mounting screws
+    translate([-4,56,0]) rotate([0,0,0]) cylinder(r=1.65, h=40, $fn=50);  
+    translate([-27.5,56,0]) rotate([0,0,0]) cylinder(r=1.65, h=40, $fn=50);  
+    translate([-30.3,53,8]) cube([5.6,8,2.1]);
+    translate([-6.8,53,8]) cube([5.6,8,2.1]);
+    // better printing bridges
+    translate([-6.8,54.35,8.35]) cube([5.6,3.3,2]);
+    translate([-5.65,54.35,8.7]) cube([3.3,3.3,2]);
+    translate([-30.3,54.35,8.35]) cube([5.6,3.3,2]);
+    translate([-29.15,54.35,8.7]) cube([3.3,3.3,2]);
+    
+    
+    // center mounting screw
+    translate([-16,29,0]) rotate([0,0,0]) cylinder(r=1.65, h=40, $fn=50);
+    translate([-18.8,26,11]) cube([5.6,8,2.1]);
+    translate([-21,33,11]) cube([10,8,6]);
+    // better printing bridges
+    translate([-18.8,27.35,11]) cube([5.6,3.3,2.1]);
+    translate([-17.65,27.35,11.25]) cube([3.3,3.3,2.1]);
+    
+    translate([-16.5,-18,-5]) rotate([-5,0,0]) cylinder(r=6, h=40, $fn=50);  
+    
+    }
+
+// Final part
+module x_carriage_base()
+{
+    difference()
+        {
+            union()
+            {
+                difference()
+                {
+                    x_carriage_body();
+                    x_carriage_holes();
+                    x_carriage_fancy();
+                }
+                cable_tray();
+                
+                difference()
+                {
+                    translate([-24,7.7,1.5]) cube([10.5,4,13.5]);
+                    translate([-16.4,6.7,16]) rotate([0,45,0]) cube([5,7,5]);
+                    translate([-27.4,6.7,16]) rotate([0,45,0]) cube([5,7,5]);
+                    translate([-27.4,6.7,13.7]) rotate([45,0,0]) cube([20,7,5]);
+                }
+            }
+    final_cutout();
+ }
+}
+
+module x_carriage()
+{
+difference()
+{
+    union()
+    {
+        x_carriage_base();
+        
+        // endstop
+        difference()
+        {
+        union()
+            {
+            translate([-8.5,-16,1]) cube([18,5.5,11]);
+            translate([2,-15.5,1]) rotate([0,0,60]) cube([5,5,11]);
+            }
+        translate([6,-17,0]) rotate([0,45,0]) cube([10,8,11]);
+        translate([-12,-18.5,0]) rotate([0,0,-25]) cube([15,8,15]);
+        translate([-6.5,-11,4]) rotate([0,0,0]) cylinder(r=1.65, h=20, $fn=50); 
+        translate([-09.5,-14,10]) cube([6,7,2.2]); 
+        }
+            
+    }
+    translate([2.5,67.5,-50]) rotate([0,0,0]) cylinder(r=1.65, h=100, $fn=50);
+    translate([2.5,67.5,0.9]) cylinder(r1=2.1,r2=1.8, h=1, $fn=50);
+    translate([2.5,67.5,5]) rotate([0,0,0]) cylinder(r=3.1, h=8, $fn=50);
+    translate([0.5,22.5,0]) rotate([0,90,0]) cylinder(r=5.2, h=7.0, $fn=50);
+
+    difference()
+    {
+        translate([2.5,21.5,0]) rotate([0,90,0]) cylinder(r=5.2, h=5.0, $fn=25);
+        translate([2,16,-10]) cube([10,6,20]);
+    }
+
+    
+    translate([5,-15.4,-1]) rotate([0,45,0]) cube([0.3,4.6,8]);        
+    
+    
+        
+    
+    
+
+    translate([-40.8,7.5,0]) rotate([0,20,0]) cube([5,3.5,20]);
+    translate([-2.9,7.5,18]) rotate([0,80,0]) cube([20,3.55,5]);
+    
+    // filament sensor connector
+    translate([-12.5,64,-3]) cube([4,11.2,14]);
+    translate([-12.5,65.75,-3]) cube([5,2.5,14]);
+    translate([-12.5,71.75,-3]) cube([5,2.5,14]);
+    translate([-14.5,67,-3]) cube([4,6,14]);
+    translate([-14.5,65,4.7]) cube([4,10.2,5]);
+    
+    translate([-12.5,54.5,8]) cube([3.5,10.2,14]);
+    translate([-12.5,57.5,9.5]) rotate([35,0,0]) cube([3.5,10.2,14]);
+    translate([-12.5,58,8]) rotate([0,0,45]) cube([3,3,14]);
+    translate([-10,58,8]) rotate([0,0,45]) cube([3,3,14]);
+    
+    translate([0,-0.5,0]) left_belt_cut();
+    translate([0,0.5,0]) right_belt_cut();
+    
+    //version
+    translate([-2,-8,1.5]) rotate([0,180,0]) linear_extrude(height = 0.6) 
+    { text("R2",font = "helvetica:style=Bold", size=4, center=true); }
+    
+    translate([-10,34,1.5]) rotate([0,180,0]) linear_extrude(height = 0.6) 
+    { text("2.5",font = "helvetica:style=Bold", size=8, center=true); }
+}
+}
+
+
+x_carriage();
+
+
+
+
+
+
+
+
+
+