diff --git a/scad/jk_rails.scad b/scad/jk_rails.scad
index a20c109..bfd9154 100644
--- a/scad/jk_rails.scad
+++ b/scad/jk_rails.scad
@@ -42,4 +42,5 @@ module end () {
 
 
 color("blue") rails(); 
-translate([0, RAIL_LEN / 2, 0]) end();
\ No newline at end of file
+translate([0, RAIL_LEN / 2, 0]) end();
+translate([0, -RAIL_LEN / 2, 0]) rotate([0, 0, 180]) end();
\ No newline at end of file
diff --git a/scad/rails_2020.scad b/scad/rails_2020.scad
index db7651c..802b7be 100644
--- a/scad/rails_2020.scad
+++ b/scad/rails_2020.scad
@@ -1,6 +1,13 @@
 use <2020_profile.scad>
-//translate([-35, 0, -25]) linear_extrude(height=175) 2020_profile();
-translate([35, 0, -25]) linear_extrude(height=175) 2020_profile();
+//include <jk_rails.scad>
+include <./common/motors.scad>
+include <./common/rod.scad>
+
+RailSpacing = 100;
+ThreadedRodSpacing = 30;
+RailEndX = 140;
+
+
 
 module rounded_cube (c, d) {
     r = d / 2;
@@ -11,14 +18,22 @@ module rounded_cube (c, d) {
     }
 }
 
-$fn = 100;
-difference () {
-    rounded_cube([120, 60, 40], d=10);
-    //rails
-    translate([-35, 0, 0]) cube([21, 21, 40 + 1], center = true);
-    translate([35, 0, 0]) cube([21, 21, 40 + 1], center = true);
-    //threaded rods
-    translate([0, 0, 0])cylinder(r = 5, h = 40 + 1, center = true);
-    //translate([-10, 0, 0])cylinder(r = 5, h = 40 + 1, center = true);
-    
-}
\ No newline at end of file
+module rail_end (pos = [0, 0, 0], rot = [90, 0, 0]) {
+    translate(pos) rotate(rot) difference () {
+        rounded_cube([RailEndX, 60, 40], d = 10, $fn = 50);
+        //rails
+        translate([-RailSpacing / 2, 0, 0]) cube([21, 21, 40 + 1], center = true);
+        translate([RailSpacing / 2, 0, 0]) cube([21, 21, 40 + 1], center = true);
+        //threaded rods motors
+        translate([-ThreadedRodSpacing / 2, 0, 0]) cylinder(r = R(10), h = 60, center = true, $fn = 100);
+        translate([ThreadedRodSpacing / 2, 0, 0]) cylinder(r = R(NEMA17PadD), h = 60, center = true, $fn = 100);
+        //translate([0, 0, 0])cylinder(r = 5, h = 40 + 1, center = true);
+        //translate([-10, 0, 0])cylinder(r = 5, h = 40 + 1, center = true);
+    }
+}
+rail_end();
+
+//translate([-35, 0, -25]) linear_extrude(height=175) 2020_profile();
+translate([RailSpacing / 2, 0, 0]) rotate([90, 0, 0]) linear_extrude(height=175) 2020_profile();
+
+translate([ThreadedRodSpacing / 2, 40, 0]) rotate([90, 0, 0])  color("blue") NEMA17();
\ No newline at end of file