diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 67a35de..2b6b55b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -11,6 +11,7 @@ Build_STL:
     - openscad -o SliderRight.stl SliderRight.scad
     - openscad -o Slider_back.stl Slider_back.scad
     - openscad -o Slider_front.stl Slider_front.scad
+    - openscad -o ZSlider_holder.stl ZSlider_holder.scad
   artifacts:
     expire_in: 2 days
     paths:
diff --git a/ZSlider_holer.scad b/ZSlider_holer.scad
new file mode 100644
index 0000000..dac7ef0
--- /dev/null
+++ b/ZSlider_holer.scad
@@ -0,0 +1,35 @@
+use <Slider_back.scad>;
+use <helpers/Holes.scad>;
+
+$fn=75;
+
+main();
+module main() {
+    difference() {
+        cube([30,40,10]);
+        translate([0,20,10]) bearingHalfHole();
+        holes();
+    }
+}
+// the four mount holes
+module holes() {
+    translate([7.5,7.5,0]) {
+        rotate([0,-90,0]) M3Hole(10);
+        rotate([0,-90,0]) M3Nut(5);
+    } 
+
+    translate([22.5,7.5,0]) {
+        rotate([0,-90,0]) M3Hole(10);
+        rotate([0,-90,0]) M3Nut(5);
+    } 
+
+    translate([7.5,32.5,0]) {
+        rotate([0,-90,0]) M3Hole(10);
+        rotate([0,-90,0]) M3Nut(5);
+    } 
+
+    translate([22.5,32.5,0]) {
+        rotate([0,-90,0]) M3Hole(10);
+        rotate([0,-90,0]) M3Nut(5);
+    } 
+}