diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..d641cee
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,14 @@
+Build_STL:
+  image: bbassett/openscad:latest
+  stage: build
+  script:
+    - openscad -o Motorhalter.stl Motorhalter.scad
+    - openscad -o SliderLeft.stl SliderLeft.scad
+    - openscad -o YRollHolder.stl YRollHolder.scad
+    - openscad -o angle_bracket.stl angle_bracket.scad
+    - openscad -o horizontal_angle_bracket.stl horizontal_angle_bracket.scad
+    - openscad -o ZMotorHalter.stl ZMotorHalter.scad
+  artifacts:
+    expire_in: 2 days
+    paths:
+      - "./latexautoinstaller*"
diff --git a/SliderLeft.scad b/SliderLeft.scad
index 637830a..6c02c98 100644
--- a/SliderLeft.scad
+++ b/SliderLeft.scad
@@ -10,7 +10,10 @@ $fn = 100;
 difference() {
     MainBody();
     M3MountHoles();
-    BottomZRodHoles();
+    
+    xcenter = 49;
+    ycenter = MountSize/2 - 10;
+    translate([xcenter, ycenter, -5]) #BottomZRodHoles();
     YRodHoles();
     
     translate([10, 45, 0]) rotate([0, 0, -90]) #motorholes(6);
@@ -26,27 +29,25 @@ module M3MountHoles(){
 }
 
 module BottomZRodHoles(){
-    xcenter = 49;
-    ycenter = MountSize/2 - 10;
     holedistance = 10.6;
 
-    translate([xcenter + holedistance/2, ycenter + holedistance/2, -5]) rotate([0,270,0]) #M3Hole(6);
-    translate([xcenter - holedistance/2, ycenter + holedistance/2, -5]) rotate([0,270,0]) #M3Hole(6);
-    translate([xcenter + holedistance/2, ycenter - holedistance/2, -5]) rotate([0,270,0]) #M3Hole(6);
-    translate([xcenter - holedistance/2, ycenter - holedistance/2, -5]) rotate([0,270,0]) #M3Hole(6);
+    translate([holedistance/2, holedistance/2, 0]) rotate([0,270,0]) M3Hole(6);
+    translate([-holedistance/2, holedistance/2, 0]) rotate([0,270,0]) M3Hole(6);
+    translate([holedistance/2, -holedistance/2, 0]) rotate([0,270,0]) M3Hole(6);
+    translate([-holedistance/2, -holedistance/2, 0]) rotate([0,270,0]) M3Hole(6);
 
     // center hole
-    translate([xcenter, ycenter, -5]) rotate([0,0,0]) #cylinder(h = 6, d = 10.1);
+    cylinder(h = 6, d = 10.3);
 }
 
 module YRodHoles(){
     translate([55, 30, 52.5]) rotate([0, 90, 0]) #cylinder(h = 6, d = 8);
     translate([55, 30, -12.5]) rotate([0, 90, 0]) #cylinder(h = 6, d = 8);
     
-    translate([55, 25, 10]) union() {
-        #cube([6,10,20]);
-        translate([0, 5, 0]) rotate([0, 90, 0]) #cylinder(h = 6, d = 10);
-        translate([0, 5, 20]) rotate([0, 90, 0]) #cylinder(h = 6, d = 10);
+    translate([55, 25, 10]) #union() {
+        cube([6,10,20]);
+        translate([0, 5, 0]) rotate([0, 90, 0]) cylinder(h = 6, d = 10);
+        translate([0, 5, 20]) rotate([0, 90, 0]) cylinder(h = 6, d = 10);
     }
 }
 
diff --git a/ZMotorHalter.scad b/ZMotorHalter.scad
new file mode 100644
index 0000000..f892d2e
--- /dev/null
+++ b/ZMotorHalter.scad
@@ -0,0 +1,25 @@
+use <Motorhalter.scad>;
+$fn = 50;
+M4HoleDiam = 4.4;
+
+height = 42.1;
+thickness = 4;
+
+difference() {
+    cube([70, height, thickness]);
+    rotate([0, -90, -90]) #motorholes(thickness+1);
+    
+    l = 47;
+    r = 64;
+    translate([l, 6]) rotate([0, -90, -90]) #MotorM4Hole(thickness+1);
+    translate([l, height-5]) rotate([0, -90, -90]) #MotorM4Hole(thickness+1);
+    
+    translate([r, 6]) rotate([0, -90, -90]) #MotorM4Hole(thickness+1);
+    translate([r, height-5]) rotate([0, -90, -90]) #MotorM4Hole(thickness+1);
+    
+    translate([l+(r-l)/2, height/2]) rotate([0, -90, -90]) #MotorM4Hole(thickness+1);
+}
+
+module MotorM4Hole(thickness) {
+    rotate([0, 90, 0])cylinder(h = thickness, d = M4HoleDiam);
+}
\ No newline at end of file