From 9e771b31256c759f8f9e45561baebe6e914ced62 Mon Sep 17 00:00:00 2001
From: Jonathan Bernard <jonathan@jdbernard.com>
Date: Mon, 19 May 2025 17:40:17 -0500
Subject: [PATCH] Ctrl keycap replacement.

---
 replacement-parts/drawer-slide-support.scad |  6 +-
 replacement-parts/keycaps/ctrl-key.scad     | 71 +++++++++++++++++++++
 2 files changed, 76 insertions(+), 1 deletion(-)
 create mode 100644 replacement-parts/keycaps/ctrl-key.scad

diff --git a/replacement-parts/drawer-slide-support.scad b/replacement-parts/drawer-slide-support.scad
index 52d99c2..217bf8a 100644
--- a/replacement-parts/drawer-slide-support.scad
+++ b/replacement-parts/drawer-slide-support.scad
@@ -14,8 +14,12 @@ difference() {
     // channel
     cube([30, 13, length + 10]);
 
-    // angled support
+    // angled supports (X-axis)
     translate([16, 9, -8]) rotate([0, -10, 0]) cube([30, 4, length + 10]);
+    translate([16, 0, -8]) rotate([0, -10, 0]) cube([30, 4, length + 10]);
+
+    // angled supports (y-axis)
+    translate([0, 12, -1]) rotate([15, 0, 0]) cube([4, 10, 40]);
 
     // base
     cube([50, 32, 4]);
diff --git a/replacement-parts/keycaps/ctrl-key.scad b/replacement-parts/keycaps/ctrl-key.scad
new file mode 100644
index 0000000..646bd89
--- /dev/null
+++ b/replacement-parts/keycaps/ctrl-key.scad
@@ -0,0 +1,71 @@
+$fn=180;
+ow=23;      // outer width
+od=18;      // outer depth
+oh=10;    // outer height
+ep = 0.01;
+
+iw=17.4;    // inner width
+id=12.5;      // inner depth
+ih=7.6;     // inner height
+
+sphMul = 4;
+
+
+difference() {
+  translate([-ow/2, -od/2, 0]) union() {
+    difference() {
+      union() {
+        cube([ow, od, oh]);
+      }
+
+      union() {
+        color("SlateGray") union() {
+          // right cut (+x)
+          rotate([0, 15, 0]) translate([-8, -ep, 0]) cube([8, od + 2*ep, 2*oh]);
+
+          // left cut (-x)
+          translate([ow, -ep, 0]) rotate([0, -15, 0]) cube([8, od + 2*ep, 2*oh]);
+
+          // front cut (-y)
+          rotate([-20, 0, 0]) translate([-ep, -8, 0]) cube([ow + 2*ep, 8, 2*oh]);
+
+          // back cut (+y)
+          translate([-ep, od, 0]) rotate([5, 0, 0]) cube([ow + 2*ep, 8, 2*oh]);
+
+          // top cut
+          translate([ow/2, od/2 + 6, ow*sphMul + oh - 1.4]) sphere(r=ow*sphMul);
+        }
+
+        // inside recess
+        color("SeaGreen") union() {
+          translate([(ow - iw)/2, (od - id)/2 + 1, -ep]) cube([iw , id, ih + ep]);
+          translate([(ow - iw)/2, (od - id)/2 + 1, ih]) rotate([0, 15, 0]) translate([0, 0, -ih-ep]) cube([2 , id, ih + ep]);
+          translate([iw + (ow - iw)/2, (od - id)/2 + 1, ih]) rotate([0, -15, 0]) translate([-2, 0, -ih-ep]) cube([2 , id, ih + ep]);
+          translate([(ow - iw)/2, (od - id)/2 + 1, ih]) rotate([-20, 0, 0]) translate([0, 0, -ih-ep]) cube([iw , 4, ih + ep]);
+        }
+      }
+    }
+
+    difference() {
+      cw = 4.3; // cross width
+      ct = 1.3; // cross thickness
+
+      // inner cylinder
+      color("DimGray") translate([ow/2, od/2, 1.4]) cylinder(d=5.3, h=ih - 1.4);
+
+      // inner cross recess (post hole)
+      color("MediumSeaGreen") translate([ow/2, od/2, 1-ep]) union() {
+        translate([-(ct/2), -(cw/2), 0]) cube([ct, cw, ih - 2 + ep]);
+        translate([-(cw/2), -(ct/2), 0]) cube([cw, ct, ih - 2 + ep]);
+      }
+    }
+  }
+
+  color("Gainsboro") union() {
+    translate([-1.8, 0, 0]) rotate([0, 0, 45]) translate([0, od/2 + 2.8, oh-1]) rotate([45, 0, 0]) cube([8, 2, 8], center=true);
+    translate([1.8, 0, 0]) rotate([0, 0, -45]) translate([0, od/2 + 2.8, oh-1]) rotate([45, 0, 0]) cube([8, 2, 8], center=true);
+
+    translate([-1.8, 1, 0]) rotate([0, 0, 135]) translate([0, od/2 + 2.8, oh-1.8]) rotate([45, 0, 0]) cube([8, 2, 8], center=true);
+    translate([1.8, 1, 0]) rotate([0, 0, -135]) translate([0, od/2 + 2.8, oh-1.8]) rotate([45, 0, 0]) cube([8, 2, 8], center=true);
+  }
+}