diff --git a/scad/main.scad b/scad/main.scad
new file mode 100644
index 0000000..d094149
--- /dev/null
+++ b/scad/main.scad
@@ -0,0 +1,40 @@
+// Copyright 2022 Thorsten Brehm
+// brehmt (at) gmail dot com
+
+// Which part do you want to see/generate?
+PART = "bottom"; // [all:All, noRear:No Rear, noFront:No Front, noBottom: No Bottom, frontBottom: Front and Bottom, topBottom: Top and Bottom, bottom:Bottom only,top:Top only,rear:Rear only,front:Front only, button:Buttons and Fittings,prototype:Prototype,test:Test]
+
+// Size of the LCD display?
+LCD = "yes"; // [small:Original 1.7inch display, large:Custom large 2.42inch display]
+
+// show FloppyEmu PCB?
+PCB = "yes"; // [no:No,yes:Yes]
+
+// Size of the box: 1.0=original Disk II drive size, 0.6='baby box', just matching floppy EMU size
+SCALING = 0.6; // [0.1 : 0.01 : 1]
+
+// Which/how many LEDs?
+LEDs = "one"; // [one:One / Activity LED,two:Both / Activity and Power LEDs]
+
+/* [Internals] */
+// Base board imprint
+IMPRINT = "MADE IN GERMANY";  // 20
+
+// Distance of the components (when showing 'exploded' elements)
+SEPARATION = 30; // [0: 1: 100]
+
+/* [Hidden] */
+// Use prototype cutouts to save filament?
+prototype = "no"; // [no:No,yes:Yes]
+
+// Add 3D print supports
+supports = "yes"; // [no:No,yes:Yes]
+
+showPcb = PCB;
+part = PART;
+ComponentSeparation = SEPARATION;
+ScalingFactor = SCALING;
+LedCount = (LEDs == "two") ? 2 : 1;
+
+include <components/main.scad>
+