Add Drain Sieve (and_why_are_we_filling_up_spaces?)

Drain_Sieve.scad

@@ -0,0 +1,25 @@
+HEIGHT=20;
+DIAMETER=40;
+WALL_THICKNESS=2;
+HOLES=6;
+PULL_HANDLE=true;
+
+$fn=36;
+PI=3.1415;
+
+difference() {
+    cylinder(h=HEIGHT, d=DIAMETER);
+    translate([0, 0, WALL_THICKNESS])
+    cylinder(h=HEIGHT-WALL_THICKNESS, d=DIAMETER-WALL_THICKNESS*2);
+    
+    // cutouts
+    for(i = [0: 360/HOLES: 360-HOLES]) {
+        rotate([0, 0, i])
+        translate([DIAMETER/4, 0])
+        cylinder(h=WALL_THICKNESS, d=(DIAMETER*PI/(HOLES*2)*3/4));
+    }
+}
+
+// pull handle if desired
+translate([0, 0, WALL_THICKNESS])
+cylinder(h=HEIGHT-WALL_THICKNESS, d=DIAMETER/10);