diff --git a/app/api/db/seed.js b/app/api/db/seed.js
index d8ab0ba..e6fd309 100644
--- a/app/api/db/seed.js
+++ b/app/api/db/seed.js
@@ -55,6 +55,8 @@ async function main() {
       title: 'demo-project1',
       description: '# can be markdown',
       mainImage: 'CadHub/kjdlgjnu0xmwksia7xox',
+      code: getOpenScadHingeCode(),
+      cadPackage: 'openscad',
       user: {
         connect: {
           id: users[0].id,
@@ -132,3 +134,117 @@ main()
   .finally(async () => {
     await db.$disconnect()
   })
+
+
+
+function getOpenScadHingeCode () {
+  return `
+baseWidth=15; // [0.1:0.1:50]
+
+hingeLength=30; // [0.1:0.1:50]
+
+// Hole mant mounting holes per half.
+mountingHoleCount=3; // [1:20]
+
+baseThickness=3; // [0.1:0.1:20]
+
+pivotRadius=5; // [0.1:0.1:20]
+
+// Pin that the hinge pivots on.
+pinRadius=2; // [0.1:0.1:20]
+
+mountingHoleRadius=1.5; // [0.1:0.1:10]
+
+// How far away the hole is from the egde.
+mountingHoleEdgeOffset=4; // [0:50]
+
+// Depending on the accuracy of your printer this may need to be increased in order for print in place to work.
+clearance=0.2; // [0.05:0.01:1]
+
+// Radius difference in the ivot taper to stop the hinge from falling apart. Should be increased with large clearance values.
+pinTaper=0.25; // [0.1:0.1:2]
+
+// calculated values
+hingeHalfExtrudeLength=hingeLength/2-clearance/2;
+mountingHoleMoveIncrement=(hingeLength-2*mountingHoleEdgeOffset)/
+  (mountingHoleCount-1);
+
+module costomizerEnd() {}
+$fn=30;
+tiny=0.005;
+// modules
+module hingeBaseProfile() {
+  translate([pivotRadius,0,0]){
+    square([baseWidth,baseThickness]);
+  }
+}
+
+module hingeBodyHalf() {
+  difference() {
+    union() {
+      linear_extrude(hingeHalfExtrudeLength){
+        offset(1)offset(-2)offset(1){
+          translate([0,pivotRadius,0]){
+            circle(pivotRadius);
+          }
+          square([pivotRadius,pivotRadius]);
+          hingeBaseProfile();
+        }
+      }
+      linear_extrude(hingeLength){
+        offset(1)offset(-1)hingeBaseProfile();
+      }
+    }
+    plateHoles();
+  }
+}
+
+module pin(rotateY, radiusOffset) {
+  translate([0,pivotRadius,hingeHalfExtrudeLength+tiny]){
+    rotate([0,rotateY,0]) {
+      cylinder(
+        h=hingeLength/2+clearance/2,
+        r1=pinRadius+radiusOffset,
+        r2=pinRadius+pinTaper+radiusOffset
+      );
+    }
+  }
+}
+
+module hingeHalfFemale() {
+  difference() {
+    hingeBodyHalf();
+    pin(rotateY=180, radiusOffset=clearance);
+  }
+}
+
+module hingeHalfMale() {
+  translate([0,0,hingeLength]) {
+    rotate([0,180,0]) {
+      hingeBodyHalf();
+      pin(rotateY=0, radiusOffset=0);
+    }
+  }
+}
+
+module plateHoles() {
+  for(i=[0:mountingHoleCount-1]){
+    translate([
+      baseWidth/2+pivotRadius,
+      -baseThickness,
+      i*mountingHoleMoveIncrement+mountingHoleEdgeOffset
+    ]){
+      rotate([-90,0,0]){
+        cylinder(r=mountingHoleRadius,h=baseThickness*4);
+      }
+    }
+  }
+}
+
+// using high-level modules
+translate([0,0,-15]) {
+    hingeHalfFemale();
+    hingeHalfMale();
+}
+  `
+}