Add rain edge

Deckel2.scad

@@ -9,13 +9,18 @@ b=10;    // Fugenhöhe
 
 $fn=res;
 rad=da/2+6;
-
 difference() {
    union() {
       // Außenring
       difference() {
          union() {
             translate([0,0,0]) cylinder(h=a+b+2, d=di+(da-di)/2+a/2);
+            // Schräge außen
+            difference() {
+               translate([0,0,-2.05])rotate_extrude(angle=360)
+               translate([(da+a)/2-3,0,0])rotate(45)square([5,5]);
+               translate([0,0,-8.05]) cylinder(h=10, d=da+a+6);
+            }
             //Flansche außen
             translate([0,0,2])linear_extrude(height = b+a, center = false, convexity = 10, twist = 0) {
                hull() {