diff --git a/build.py b/build.py
index 54e2340..e8ff5e8 100644
--- a/build.py
+++ b/build.py
@@ -3,13 +3,13 @@ from build123d import *
 
 center_thickness = 10
 
-mop_diameter = 40
-mop_arc_size = 180
+mop_diameter = 23.7
+mop_arc_size = 220
 
-scraper_diameter = 40
-scraper_arc_size = 180
+scraper_diameter = 20.55
+scraper_arc_size = mop_arc_size
 
-arms_thickness = 5
+arms_thickness = 3
 
 clamp_length = 50