From d8b3ff980be7ecd6d8dfd10b01b6387d073c500b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lauri=20V=C3=B5sandi?= <lauri@k-space.ee>
Date: Sat, 17 Jul 2021 09:45:06 +0300
Subject: [PATCH] Add SW270 based subwoofer template

---
 sw270.scad | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 sw270.scad

diff --git a/sw270.scad b/sw270.scad
new file mode 100644
index 0000000..2f8bc30
--- /dev/null
+++ b/sw270.scad
@@ -0,0 +1,54 @@
+/**
+ * Laser cuttable template for building a subwoofer with 
+ * Wavecor SW270 driver and Monacor SAM-300D amplifier
+ */
+
+B = 19.05; // Bushing outer diameter
+M = 6.35; // Mill diameter
+J = 100; // Mill pad
+T = 21; // Material thickness
+I = 320; // Internal dimension
+A = 5; // Alignment pad size
+P = 17; // Alignment pad placement
+O = I + 2 * T; // Outer dimensions
+BD = B - M; // Bushing offset
+
+echo("Internal volume", I*I*I/1000000, "L");
+
+module sam300d_flush_mount() {
+    offset(r=BD) square([255, 188], center=true);
+}
+
+// Side panels
+translate([I+J/2, 0]) {
+  difference() {
+    square([I + J, I - BD], center=true);
+    sam300d_flush_mount();
+      
+    // Alignment squares
+    translate([O/2,0]) rotate(45) square(A, center=true);
+    translate([-O/2,0]) rotate(45) square(A, center=true);
+    translate([0,I/2-P]) rotate(45) square(A, center=true);
+    translate([0,-I/2+P]) rotate(45) square(A, center=true);
+    translate([I/2,I/2-P]) rotate(45) square(A, center=true);
+    translate([I/2,-I/2+P]) rotate(45) square(A, center=true);
+    translate([-I/2,I/2-P]) rotate(45) square(A, center=true);
+    translate([-I/2,-I/2+P]) rotate(45) square(A, center=true);
+  }
+}
+
+// Front face
+difference() {
+  square([I - BD, I - BD], center=true);
+  
+  // Alignment squares
+  translate([I/2-P,0]) rotate(45) square(A, center=true);
+  translate([-I/2+P,0]) rotate(45) square(A, center=true);
+  translate([0,I/2-P]) rotate(45) square(A, center=true);
+  translate([0,-I/2+P]) rotate(45) square(A, center=true);
+
+  circle(d=228+BD, $fn=100);
+  for ( i = [0 : 60 : 360] ){
+    rotate(i) translate([259/2,0]) circle(d=4, $fn=30);
+  }
+}
\ No newline at end of file