From a16d88432d05bf695ed764f6d8b4e2c575a675d6 Mon Sep 17 00:00:00 2001
From: Ian Gulliver <github@flamingcow.io>
Date: Sun, 12 Jul 2026 11:43:05 -0700
Subject: [PATCH] Initial import

---
 .gitattributes                    |   4 +
 Gravity Board/gravity board 1.stl |   3 +
 Gravity Board/gravity board 2.stl |   3 +
 Gravity Board/gravity board 3.stl |   3 +
 Gravity Board/gravity board.png   |   3 +
 Gravity Board/gravity board.scad  | 246 ++++++++++++++++++++++++++++++
 6 files changed, 262 insertions(+)
 create mode 100644 .gitattributes
 create mode 100644 Gravity Board/gravity board 1.stl
 create mode 100644 Gravity Board/gravity board 2.stl
 create mode 100644 Gravity Board/gravity board 3.stl
 create mode 100644 Gravity Board/gravity board.png
 create mode 100644 Gravity Board/gravity board.scad

diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..8504958
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,4 @@
+*.stl filter=lfs diff=lfs merge=lfs -text
+*.STL filter=lfs diff=lfs merge=lfs -text
+*.3mf filter=lfs diff=lfs merge=lfs -text
+*.png filter=lfs diff=lfs merge=lfs -text
diff --git a/Gravity Board/gravity board 1.stl b/Gravity Board/gravity board 1.stl
new file mode 100644
index 0000000..10dbe43
--- /dev/null
+++ b/Gravity Board/gravity board 1.stl	
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bb58c249c57245d4fe2021dd1b63d659e2ef0bb37df6112edd6247c61639e088
+size 1034184
diff --git a/Gravity Board/gravity board 2.stl b/Gravity Board/gravity board 2.stl
new file mode 100644
index 0000000..5e406f4
--- /dev/null
+++ b/Gravity Board/gravity board 2.stl	
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:64c6a66dd23608da74caef4bbc27971d7dc061f36e42f83c9b9fd79a299c279b
+size 220284
diff --git a/Gravity Board/gravity board 3.stl b/Gravity Board/gravity board 3.stl
new file mode 100644
index 0000000..989f02f
--- /dev/null
+++ b/Gravity Board/gravity board 3.stl	
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ed7491a689748d4300d58c1e89e7532de4d41b4831600a3de47e82ef747bc4fa
+size 539484
diff --git a/Gravity Board/gravity board.png b/Gravity Board/gravity board.png
new file mode 100644
index 0000000..cad0b1d
--- /dev/null
+++ b/Gravity Board/gravity board.png	
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ca34956c00cbeb5da19774d936fd5a6864e006ec129953f6291316e635ac0ef9
+size 96512
diff --git a/Gravity Board/gravity board.scad b/Gravity Board/gravity board.scad
new file mode 100644
index 0000000..47b15bf
--- /dev/null
+++ b/Gravity Board/gravity board.scad	
@@ -0,0 +1,246 @@
+$fn = 100;
+eps = 0.01;
+
+board = true;
+stripes = true;
+fans = true;
+
+only = "*";
+
+if (board && (only == "*" || only == "b")) {
+    color("red")
+    difference() {
+        difference() {
+            union() {
+                board();
+                tail();
+            }
+        
+            stripes();
+        }
+    
+        antiboard();
+    }
+}
+
+if (stripes && (only == "*" || only == "s")) {
+    color("white")
+    difference() {
+        translate([0, 0, eps])
+        intersection() {
+            board();
+            stripes();
+        }
+    
+        antiboard();
+    }
+ }
+
+
+if (fans && (only == "*" || only == "f")) {
+    color("silver")
+    fans();
+}
+
+
+module board() {
+    cube([100, 20, 4]);
+    
+    translate([100, 10, 0])
+    cylinder(h=4, d=20);
+    
+    translate([0, 0, 2])
+    rotate([0, 90, 0])
+    cylinder(h=100, d=4);
+    
+    translate([0, 20, 2])
+    rotate([0, 90, 0])
+    cylinder(h=100, d=4);
+    
+    translate([100, 10, 2])
+    torus(or=12, ir=8);
+    
+    translate([0, 0, 2])
+    rotate([-90, 0, 0])
+    cylinder(h=20, d=4);
+    
+    translate([0, 0, 2])
+    sphere(d=4);
+    
+    translate([0, 20, 2])
+    sphere(d=4);
+}
+
+module antiboard() {
+    translate([90, 10, -1])
+    cylinder(h=6, d=16);
+    
+    translate([90, 10, 1])
+    cylinder(h=2, d=18);
+    
+    translate([55, 10, -1])
+    cylinder(h=6, d=16);
+    
+    translate([55, 10, 1])
+    cylinder(h=2, d=18);
+    
+    translate([20, 10, -1])
+    cylinder(h=6, d=16);
+    
+    translate([20, 10, 1])
+    cylinder(h=2, d=18);
+} 
+
+module stripes() {
+    o = 6;
+
+    difference() {
+        union() {
+            translate([-5, 4, -1])
+            cube([120, 4, 6]);
+    
+            translate([-5, 12, -1])
+            cube([120, 4, 6]);
+    
+    
+            difference() {
+                translate([o + 0, 4, 1])
+                cube([10, 12, 2]);
+        
+                translate([-8, 0, 0])
+                cube([10, 14, 4]);
+            }
+    
+            translate([o + 20, 4, 1])
+            cube([10, 12, 2]);
+    
+            translate([o + 40, 4, 1])
+            cube([10, 12, 2]);
+    
+            translate([o + 60, 4, 1])
+            cube([10, 12, 2]);
+    
+            translate([o + 80, 4, 1])
+            cube([10, 12, 2]);
+    
+            difference() {
+                translate([o + 100, 4, 1])
+                cube([10, 12, 2]);
+        
+                translate([108, 0, 0])
+                cube([10, 14, 4]);
+            }
+        }
+        
+        difference() {
+            translate([o - 10, 3, 1])
+            cube([10, 14, 2]);
+            
+            translate([-8, 0, 0])
+            cube([10, 16, 4]);
+        }
+        
+        translate([o + 10, 3, 1])
+        cube([10, 14, 2]);
+        
+        translate([o + 30, 3, 1])
+        cube([10, 14, 2]);
+        
+        translate([o + 50, 3, 1])
+        cube([10, 14, 2]);
+        
+        translate([o + 70, 3, 1])
+        cube([10, 14, 2]);
+        
+        translate([o + 90, 3, 1])
+        cube([10, 14, 2]);
+    }
+}
+
+module fans() {
+    translate([90, 10, 0])
+    fan();
+
+    translate([55, 10, 0])
+    fan();
+
+    translate([20, 10, 0])
+    fan();
+}
+
+module fan() {
+    difference() {
+        cylinder(h=4, d=16);
+            
+        translate([0, 0, -1])
+        cylinder(h=6, d=15);
+    }
+        
+    difference() {
+        cylinder(h=4, d=12);
+            
+        translate([0, 0, -1])
+        cylinder(h=6, d=11);
+    }
+        
+    difference() {
+        cylinder(h=4, d=8);
+            
+        translate([0, 0, -1])
+        cylinder(h=6, d=7);
+    }
+    
+    translate([0, 0, 1])
+    difference() {
+        cylinder(h=2, d=18);
+        
+        translate([0, 0, -1])
+        cylinder(h=4, d=15);
+    }
+        
+    translate([0, 0, 2])
+    rotate([0, 0, 0])
+    cube([16, 0.5, 4], center=true);
+        
+    translate([0, 0, 2])
+    rotate([0, 0, 90])
+    cube([16, 0.5, 4], center=true);
+        
+    translate([0, 0, 2])
+    rotate([0, 0, 45])
+    cube([16, 0.5, 4], center=true);
+        
+    translate([0, 0, 2])
+    rotate([0, 0, -45])
+    cube([16, 0.5, 4], center=true);
+}
+
+module tail() {
+    intersection() {
+        union() {
+            translate([0, 8, 0])
+            cube([10, 4, 16]);
+            
+            translate([0, 10, 2])
+            cylinder(h=10, d=4);
+        }
+        
+        translate([0, 10, 2])
+        resize([20, 4, 20])
+        sphere(d=20);
+    }
+    
+    translate([0, 12, 2])
+    rotate([90, 0, 0])
+    cylinder(h=4, d=4);
+}
+
+
+module torus(or, ir) {
+  r = (or - ir) / 2;
+  
+  rotate_extrude()
+  
+  translate([ir + r, 0, 0])
+  circle(r);
+}
\ No newline at end of file