diff --git a/parts.scad b/parts.scad
index e274212..87e1b98 100644
--- a/parts.scad
+++ b/parts.scad
@@ -58,6 +58,7 @@ module corner_base(extension = wall_thickness) {
     translate([ actual_corner_offset, -frame_size / 2, -frame_size / 2 ])
         cube([ ldim, frame_size, frame_size ]);
 
+    // Screw holes
     for (pos = [10, 30],
          mirror_normal = [[0,1,0], [1,-1,0]]) {
       mirror(mirror_normal)
@@ -67,6 +68,9 @@ module corner_base(extension = wall_thickness) {
         cylinder(d = 5, h = odim);
       }
     }
+
+    // Adjustable feet
+    cylinder(d=8, h=odim * 2 + 1);
   }
 }