diff --git a/chromebook display L.stl b/chromebook display L.stl
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diff --git a/chromebook display R.stl b/chromebook display R.stl
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diff --git a/chromebook display midmount.stl b/chromebook display midmount.stl
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diff --git a/chromebook display.scad b/chromebook display.scad
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--- /dev/null
+++ b/chromebook display.scad	
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+// Chromebook screen and motherboard assembly
+// length units are millimeters
+
+screenHeight = 157;
+screenHeightAndChin = 167;
+screenChinHeight = screenHeightAndChin - screenHeight;
+
+screenWidth = 267;
+screenChinWidth = 188.5;
+screenWidthWithNoChin = screenWidth - screenChinWidth;
+
+screenTabsDistance = 136; // top of top tab to bottom of bottom tab
+screenTabHeight = 11.49;
+screenTabWidth = 4.96;
+screenTabDistanceToBottom = 16.81; // from bottom-most point of tab
+screenTopTabDistanceToBottom = screenTabsDistance + screenTabDistanceToBottom - screenTabHeight; // from bottom-most point of top tab
+screenTopTabDistanceToTop = screenHeight - screenTabsDistance - screenTabDistanceToBottom; // from top-most point of tab
+
+screenBezel = 4.50;
+screenThickness = 2.60;
+
+batteryWidth = 199;
+batteryHeight = 84;
+batteryThickness = 6;
+batteryTabHeight = 16.40;
+batteryTabWidth = 7.37;
+batteryTabThickness = 1.55 + 0.4;
+batteryTabDistanceToBottom = 25.23;
+
+motherboardLeftHolesDistanceHeight = 95.72;
+motherboardLeftHoleRadius = 2.50 / 2;
+motherboardLeftHolesRealHeightDistance = motherboardLeftHolesDistanceHeight - (2 * motherboardLeftHoleRadius);
+
+motherboardRightHoleDistanceWidth = 211;
+motherboardRightHoleRadius = 3.16 / 2;
+motherboardRightHoleRealWidthDistance = motherboardRightHoleDistanceWidth - motherboardRightHoleRadius;
+motherboardRightHoleDistanceToBottom = 45 - motherboardRightHoleRadius;
+
+motherboardBatteryDistanceHeight = motherboardLeftHolesRealHeightDistance - 20;
+motherboardBatteryDistanceWidth = 31;
+
+screwThreadRadius = 1.90 * 0.49;
+screwSupportRadius = 4.50 / 2;
+
+globalThickness = 2.00;
+
+motherboardElevation = 6.00 + (globalThickness / 3);
+
+include <ng_common/hollow_cylinder.scad>;
+
+module motherboardMount(thickness) {
+    translate([screwSupportRadius, screwSupportRadius, 0])
+    union () {
+        // y-axis support bar
+        translate([-screwSupportRadius,-screwSupportRadius,0]) {
+            //#cube([screwSupportRadius * 2, motherboardLeftHolesRealHeightDistance + (2 * screwSupportRadius), thickness]);
+        }
+        
+        // x-axis support bar
+        translate([-screwSupportRadius, motherboardRightHoleDistanceToBottom -screwSupportRadius, 0]) {
+            //#cube([motherboardRightHoleRealWidthDistance + (2 * screwSupportRadius), screwSupportRadius * 2, thickness]);
+        }
+        translate([0, 0, -motherboardElevation]) {
+            
+            // bottom left hole
+            hollowCylinder(screwThreadRadius, screwSupportRadius, motherboardElevation);
+            
+            // top left hole
+            translate ([0, motherboardLeftHolesRealHeightDistance, 0]) {
+                hollowCylinder(screwThreadRadius, screwSupportRadius, motherboardElevation);
+            }
+            
+            // right hole
+            translate ([motherboardRightHoleRealWidthDistance, motherboardRightHoleDistanceToBottom, 0]) {
+                hollowCylinder(screwThreadRadius, screwSupportRadius, motherboardElevation);
+            }
+        }
+        
+    }
+}
+
+module batteryMount(thickness) {
+    union() {
+        //#cube([batteryWidth + (2 * batteryTabWidth), thickness, thickness]);
+        // left side mount
+        translate([0,0,0]) {
+            cube([batteryTabWidth, batteryTabDistanceToBottom + batteryTabHeight, thickness]);
+            translate([0, 0, -batteryTabThickness]) {
+                cube([batteryTabWidth, batteryTabDistanceToBottom, batteryTabThickness + thickness]);
+                translate([0, 0, -thickness]) {
+                    cube([batteryTabWidth, batteryTabDistanceToBottom + batteryTabHeight, thickness]);
+                }
+            }
+        }
+        // right side mount
+        translate([batteryWidth + batteryTabWidth, 0, 0]) {
+            cube([batteryTabWidth, batteryTabDistanceToBottom + batteryTabHeight, thickness]);
+            translate([0, 0, -batteryTabThickness]) {
+                cube([batteryTabWidth, batteryTabDistanceToBottom, batteryTabThickness + thickness]);
+                translate([0, 0, -thickness]) {
+                    cube([batteryTabWidth, batteryTabDistanceToBottom + batteryTabHeight, thickness]);
+                }
+            }
+        }
+    }
+}
+
+module screenMount(thickness) {
+    // top bar slot
+    translate([screwThreadRadius, -thickness, 0]) {
+        cube([screenWidth / 2, thickness, screenThickness + (2 * thickness)]);
+        translate([0, -screenBezel, 0])
+            cube([screenWidth / 2, screenBezel, thickness]);
+        translate([0, -screenBezel, screenThickness + thickness])
+            cube([screenWidth / 2, screenBezel, thickness]);
+    }
+    
+    // side slot
+    translate([(screenWidth / 2) + screwThreadRadius, -thickness, 0]) {
+        translate([0, -screenTopTabDistanceToTop, 0])
+            cube([thickness, screenTopTabDistanceToTop + thickness, screenThickness + (2 * thickness)]);
+        translate([0, screenTabDistanceToBottom + screenTabHeight - screenHeight])
+            cube([thickness, screenTabsDistance - (2 * screenTabHeight), screenThickness + (2 * thickness)]);
+        translate([0, -screenHeight, 0])
+            cube([thickness, screenTabDistanceToBottom, screenThickness + (2 * thickness)]);
+        translate([-screenBezel, -screenHeight, 0]) {
+            cube([screenBezel + thickness, screenHeight, thickness]);
+            translate([0, 0, thickness + screenThickness])
+                cube([screenBezel + thickness, screenHeight, thickness]);
+        }
+    }
+    
+    // bottom slot
+    translate([(screenWidth / 2) + screwThreadRadius - (screenWidthWithNoChin / 2), -(screenHeight + (thickness * 2)), 0]) {
+        cube([(screenWidthWithNoChin / 2) + thickness, thickness, screenThickness + (2 * thickness)]);
+        cube([(screenWidthWithNoChin / 2) + thickness, screenHeight, thickness]);
+        translate([0, 0, screenThickness + thickness])
+            cube([(screenWidthWithNoChin / 2) + thickness, screenBezel, thickness]);
+    }
+}
+
+module screenMountR(thickness) {
+    hollowCylinder(screwThreadRadius, screwSupportRadius, (screenThickness + (2 * thickness)) / 2);
+    
+    screenMount(thickness);
+    
+    circleSupportRadius = (screenWidth / 6);
+    
+    // backplate cut circle
+    translate([screenWidth * 0.4, -screenHeight * 0.6, 0])
+    difference() {
+        cylinder(r=circleSupportRadius, h = thickness, $fn=360);
+        translate([-0.01, -(circleSupportRadius + 0.01), -0.01])
+            cube([circleSupportRadius + 0.02, (circleSupportRadius * 2) + 0.02, thickness + 0.02]);
+        /*translate([-(circleSupportRadius + 0.01), -0.01, -0.01])
+            cube([circleSupportRadius + 0.02, (screenWidth / 2) + 0.02, thickness + 0.02]);*/
+    }
+}
+
+module screenMountL(thickness) {
+    translate([0, 0, (screenThickness + (2 * thickness)) / 2])
+        hollowCylinder(screwThreadRadius, screwSupportRadius, (screenThickness + (2 * thickness)) / 2);
+    
+    mirror([1, 0, 0])
+        screenMount(thickness);
+    
+    circleSupportRadius = (screenWidth / 3);
+    
+    // backplate cut circle
+    translate([-(screenWidth / 2), 0, 0])
+    difference() {
+        cylinder(r=circleSupportRadius, h = thickness, $fn=360);
+        translate([-circleSupportRadius, -circleSupportRadius, -0.01])
+            cube([circleSupportRadius + 0.02, screenWidth + 0.02, thickness + 0.02]);
+        translate([0, 0, -0.01])
+            cube([circleSupportRadius + 0.02, circleSupportRadius + 0.02, thickness + 0.02]);
+    }
+}
+
+motherboardMount(globalThickness);
+
+translate([motherboardBatteryDistanceWidth, motherboardBatteryDistanceHeight, -(globalThickness / 3)])
+    batteryMount(globalThickness);
+
+/*translate([screwSupportRadius * 2, motherboardRightHoleDistanceToBottom + (screwSupportRadius * 2), 0])
+    #cube([motherboardBatteryDistanceWidth, motherboardLeftHolesRealHeightDistance - motherboardRightHoleDistanceToBottom, globalThickness]);*/
+
+translate([screenWidth / 2 - globalThickness, screenHeight + globalThickness, 0]) {
+    screenMountR(globalThickness);
+    screenMountL(globalThickness);
+}
\ No newline at end of file
diff --git a/chromebook display.stl b/chromebook display.stl
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