diff --git a/3dprinter.scad b/3dprinter.scad
index 7501dee..74de5ec 100644
--- a/3dprinter.scad
+++ b/3dprinter.scad
@@ -69,8 +69,12 @@ module printBed() {
 }
 
 module zMotor(){
-    translate([20, 200, 41]) rotate([0, 180, 0]) Nema17();
-    translate([380, 200, 41]) rotate([0, 180, 0]) Nema17();
+    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();
+    translate([420, 240, 97]) linear_rail(500);
 }
 
 // -- MODULES -- //
@@ -85,4 +89,8 @@ module halfAluProfile(length) {
 
 module linear_rail(length) {
     color("#cccccc") cylinder(h = length, d = 8, $fn=33);
+}
+
+module bearing(){
+    cylinder(h = length, d = 8, $fn=33);
 }
\ No newline at end of file