hole pattern change

flower_pot.py

@@ -55,6 +55,8 @@ def main() -> None:
     if not SCAD_DIR.exists():
         raise SystemExit(f"Missing SCAD directory: {SCAD_DIR}")
 
+    print("Dimensions less than 20mm will result in unusable stl files.\n")
+
     base_radius = ask_float("Flower pot radius (base_radius) in mm: ")
     wall_height = ask_float("Flower pot height (wall_height) in mm: ")
     wall_height_tray = ask_float("Tray height (wall_height_tray) in mm: ")

flower_pot/pot.scad

@@ -56,7 +56,14 @@ module holes_pattern() {
     union() {
         circle(d = hole_d);
         
-        for(r = [base_radius * 0.33, base_radius * 0.66]) { 
+        // rings based on the base radius
+        hole_circles = (base_radius < 35) 
+        ? [base_radius * 0.5]
+        : (base_radius < 55) 
+            ? [base_radius * 0.33, base_radius * 0.66]
+            : [base_radius * 0.25, base_radius * 0.5, base_radius * 0.75];
+            
+        for(r = hole_circles) { 
             for(a = [0 : 60 : 359]) {
                 rotate([0, 0, a]) 
                     translate([r, 0, 0])