diff --git a/examples/JK_projector_takeup.scad b/examples/JK_projector_takeup.scad
index 712d2af..9a1b900 100644
--- a/examples/JK_projector_takeup.scad
+++ b/examples/JK_projector_takeup.scad
@@ -162,8 +162,46 @@ module jk_takeup_halves (HALF = "A") {
 
 }
 
+module idle_roller () {
+    D1 = 16;
+    D3 = 90;
+    FN = 60;
+    difference () {
+        union() {
+            difference () {
+                cylinder(r = R(D1), h = 20.2, center = true, $fn = FN);
+                cylinder(r = R(D1)+1, h = 17, center = true, $fn = FN);
+            }
+            translate([0, 0, 0]) {
+                difference() {
+                    cylinder(r = R(14), h = 17.1, center = true, $fn = FN);
+                    for (i = [0 : FN - 1]) {
+                        rotate([0, 0, (360 / FN) * i ]) {
+                            translate([(D3/2)+6.1, 0, 0]) rotate([90, 0, 0]) cylinder(r = R(D3), h = 2, center = true, $fn = 200);
+                        }
+                    }
+                }
+            }
+        }
+        cylinder(r = R(4.25), h = 20.2 + 1, center = true, $fn = 30);
+        translate([0, 0, (20.2 / 2) - (5 / 2)]) cylinder(r = R(10), h = 5.1, center = true, $fn = FN);
+    }
+    
+}
+
+module idle_roller_cap () {
+    difference () {
+        cylinder(r = R(10-0.3), h = 5, center = true, $fn = 60);
+        cylinder(r = R(4.25), h = 20.2 + 1, center = true, $fn = 30);
+        translate([0, 0, 1.01]) m4_nut();
+    }
+    
+}
+
 //translate([0, 0, 40]) color("red") original_takeup();
 //jk_takeup();
-jk_takeup_halves();
+//jk_takeup_halves();
 //color("blue") jk_takeup_halves("B");
-//m5_nut();
\ No newline at end of file
+//m5_nut();
+idle_roller();
+//translate([0, 0, (20.2 / 2) - (5 / 2)]) idle_roller_cap();
\ No newline at end of file