diff --git a/3dprinter.scad b/3dprinter.scad
index 74de5ec..99cc8e3 100644
--- a/3dprinter.scad
+++ b/3dprinter.scad
@@ -4,6 +4,11 @@ use <Motorhalter.scad>;
 use <YRollHolder.scad>;
 use <Motor.scad>;
 
+include <NopSCADlib/core.scad>
+include <NopSCADlib/vitamins/stepper_motors.scad>
+include <NopSCADlib/vitamins/pulleys.scad>
+
+
 bottmoutline();
 bottomAngleBrackets();
 
@@ -23,8 +28,8 @@ module bottmoutline() {
     translate([440, - 40, 0]) rotate([0, 0, 90]) aluProfile(480);
 
     // linear rails
-    translate([70, 0, 20]) rotate([-90, 0, 0]) linear_rail(400);
-    translate([330, 0, 20]) rotate([-90, 0, 0]) linear_rail(400);
+    translate([70, 0, 20]) rotate([- 90, 0, 0]) linear_rail(400);
+    translate([330, 0, 20]) rotate([- 90, 0, 0]) linear_rail(400);
 }
 
 module bottomAngleBrackets() {
@@ -56,9 +61,25 @@ module horizontalProfile() {
 module YAxis() {
     translate([160, 0, 0]) Motorhalter();
 
-    translate([214, 400, 0]) rotate([0, 0, 180]) YRollHolder();
+    translate([222, 400, 0]) rotate([0, 0, 180]) YRollHolder();
 
-    translate([202.5, 26.6, 21]) rotate([0, -90, 0]) Nema17();
+    translate([200.5, 26.6, 21]) rotate([0, 90, 0]) NEMA(NEMA17M, 180, true);
+
+    p1 = [0, 0];
+    p2 = [0, 350.5];
+
+    path = [[p1.x, p1.y, pulley_pr(GT2x20ob_pulley)],
+            [p2.x, p2.y, pulley_pr(GT2x20_toothed_idler)]
+        ];
+
+    belt = GT2x6;
+
+    translate([215, 26.5, 20.9]) rotate([0, 90, 0]) union() {
+        belt(belt, path, 13, [0, 0]);
+
+        translate(p1) rotate([0, 0, 0]) pulley_assembly(GT2x20ob_pulley);
+        translate(p2) pulley_assembly(GT2x20_toothed_idler);
+    }
 }
 
 module printBed() {
@@ -68,9 +89,9 @@ module printBed() {
     translate([350, 90, 50]) rotate([0, 0, 90]) halfAluProfile(220);
 }
 
-module zMotor(){
-    translate([-20, 240, 81]) rotate([0, 180, 0]) Nema17();
-    translate([-20, 240, 97]) linear_rail(500);
+module zMotor() {
+    translate([- 20, 240, 81]) rotate([0, 180, 0]) Nema17();
+    translate([- 20, 240, 97]) linear_rail(500);
 
     // add lead screws
     translate([420, 240, 81]) rotate([0, 180, 0]) Nema17();
@@ -88,9 +109,9 @@ module halfAluProfile(length) {
 }
 
 module linear_rail(length) {
-    color("#cccccc") cylinder(h = length, d = 8, $fn=33);
+    color("#cccccc") cylinder(h = length, d = 8, $fn = 33);
 }
 
-module bearing(){
-    cylinder(h = length, d = 8, $fn=33);
+module bearing() {
+    cylinder(h = length, d = 8, $fn = 33);
 }
\ No newline at end of file