From 76f5d64c97b76ea5f486c5af683fe7072291e8d5 Mon Sep 17 00:00:00 2001
From: mmcwilliams <hi@mmcwilliams.com>
Date: Sun, 23 Apr 2023 21:56:23 -0400
Subject: [PATCH] Add 2020 T-Slot profile

---
 2020T-Slot.scad | 109 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 2020T-Slot.scad

diff --git a/2020T-Slot.scad b/2020T-Slot.scad
new file mode 100644
index 0000000..d67a251
--- /dev/null
+++ b/2020T-Slot.scad
@@ -0,0 +1,109 @@
+/** 
+ * @file
+ * Generic library for fractional T-Slot extrusions.
+ *
+ * Creative Commons Share Alike 3.0
+ * Copyright (c) 2014 Manuel García
+ *
+ * Original library (David Lee Miller)
+ * https://www.thingiverse.com/thing:136430
+ * 
+ * Modified to be used in customizer
+ */ 
+
+//CUSTOMIZER VARIABLES
+
+ProfileCore = 4.3 * 1;     // Profile core Ø (Default M5).
+minkR_TS = 0.04 * 20;  // Minkowski radius for the T-Slot.
+minkR_IC = 0.075 * 20; // Minkowski radius for the inner cutout.
+minkR_PF = 0.05 * 20;  // Minkowski radius for the profile corners.
+
+//CUSTOMIZER VARIABLES END
+
+module 2020Profile(height, core = ProfileCore) {
+  linear_extrude(height = height, center = true)
+  union() {
+    difference() {
+      minkowski() {
+        translate([0, 0, 0]) circle(r = minkR_PF, center = true, $fn = 32);
+        square([1 * 20 - 2 * minkR_PF, 1 * 20 - 2 * minkR_PF], center = true);
+      }
+      translate([0, 0, 0]) circle(r = core / 2, $fn = 24);
+      translate([-0.5 * 20 + 0.087 * 20, 0, 0]) tSlot();
+      rotate([0, 0, 180]) translate([-0.5 * 20 + 0.087 * 20, 0, 0]) tSlot();
+      translate([0, -0.5 * 20 + 0.087 * 20, 0]) rotate([0, 0, 90]) tSlot();
+      translate([0, 0.5 * 20 - 0.087 * 20, 0]) rotate([0, 0, -90]) tSlot();
+    }
+  }
+}
+
+module fillet(rad) {
+  translate([-rad, -rad, 0])
+  difference() {
+    translate([0, 0, 0]) square([rad + 0.01, rad + 0.01]);
+    circle(r = rad, center = true, $fn = 32);
+  }
+}
+
+module insideCutout() {
+  minkowski() {
+    translate([0, 0, 0]) circle(r = minkR_IC, center = true, $fn = 32);
+    hull() {
+      square([0.2 * 20 - minkR_IC, 0.645 * 20 - 2 * minkR_IC], center = true);
+      square([0.8 * 20 - 2 * minkR_IC, 0.001 * 20], center = true);
+    }
+  }
+}
+
+module doubleCutout() {
+  union() {
+    minkowski() {
+      translate([0, 0, 0]) circle(r = minkR_IC, center = true, $fn = 32);
+      union() {
+        rotate([0, 0, 0]) hull() {
+          translate([-0.5 * 20, 0, 0]) hull() {
+            square([0.2 * 20 - minkR_IC, 0.645 * 20 - 2 * minkR_IC], center = true);
+            square([0.8 * 20 - 2 * minkR_IC, 0.001 * 20], center = true);
+          }
+          translate([0.5 * 20, 0, 0]) hull() {
+            square([0.2 * 20 - minkR_IC, 0.645 * 20 - 2 * minkR_IC], center = true);
+            square([0.8 * 20 - 2 * minkR_IC, 0.001 * 20], center = true);
+          }
+        }
+        rotate([0, 0, 90]) hull() {
+          translate([-0.5 * 20, 0, 0]) hull() {
+            square([0.2 * 20 - minkR_IC, 0.645 * 20 - 2 * minkR_IC], center = true);
+            square([0.8 * 20 - 2 * minkR_IC, 0.001 * 20], center = true);
+          }
+          translate([0.5 * 20, 0, 0]) hull() {
+            square([0.2 * 20 - minkR_IC, 0.645 * 20 - 2 * minkR_IC], center = true);
+            square([0.8 * 20 - 2 * minkR_IC, 0.001 * 20], center = true);
+          }
+        }
+      }
+    }
+    rotate([0, 0, 0]) translate([-0.645 * 20 / 2, -0.645 * 20 / 2, 0]) fillet(minkR_IC);
+    rotate([0, 0, 180]) translate([-0.645 * 20 / 2, -0.645 * 20 / 2, 0]) fillet(minkR_IC);
+    rotate([0, 0, 90]) translate([-0.645 * 20 / 2, -0.645 * 20 / 2, 0]) fillet(minkR_IC);
+    rotate([0, 0, -90]) translate([-0.645 * 20 / 2, -0.645 * 20 / 2, 0]) fillet(minkR_IC);
+  }
+}
+
+module tSlot() {
+  union() {
+    translate([minkR_TS, 0, 0])
+    minkowski() {
+      translate([0, 0, 0]) circle(r = minkR_TS, center = true, $fn = 32);
+      hull() {
+        square([0.001 * 20, 0.585 * 20 - 2 * minkR_TS], center = true);
+        translate([(0.233 * 20 - 2 * minkR_TS) / 2, 0, 0]) square([0.233 * 20 - 2 * minkR_TS, 0.2 * 20], center = true);
+      }
+    }
+    translate([-0.255 * 20 / 2 + 0.01, 0, 0]) square(0.255 * 20, center = true);
+    translate([-0.35 * 20 / 2 - 0.087 * 20 + 0.01, 0, 0]) square(0.35 * 20, center = true);
+    translate([0, -0.255 * 20 / 2, 0]) fillet(minkR_TS / 2);
+    translate([-0.087 * 20, -0.255 * 20 / 2, 0]) rotate([0, 0, 90]) fillet(minkR_TS / 2);
+    scale([1, -1, 1]) translate([0, -0.255 * 20 / 2, 0]) fillet(minkR_TS / 2);
+    scale([1, -1, 1]) translate([-0.087 * 20, -0.255 * 20 / 2, 0]) rotate([0, 0, 90]) fillet(minkR_TS / 2);
+  }
+}
\ No newline at end of file