diff --git a/planter.scad b/planter.scad
index dca8f93..0e3902f 100644
--- a/planter.scad
+++ b/planter.scad
@@ -17,6 +17,8 @@ module _end_of_customizer() {}
 
 $fn = $preview ? 20 : 60;
 
+$fs = $preview ? 1 : 0.1;
+
 // The bottom half of a sphere
 module half_sphere(d) {
     difference() {