diff --git a/amp_case.py b/amp_case.py
index a1183d3..7744539 100644
--- a/amp_case.py
+++ b/amp_case.py
@@ -10,10 +10,12 @@ from svgpathtools import svg2paths
 import cadquery as cq
 import cqmore
 
-amp_width = 58
+amp_bottom_height = 16 # how tall the pcb is
 battery_width = 26
-amp_length = 38 + (battery_width * 2)
-amp_height = 34
+battery_height = 17
+amp_width = 50
+amp_length = 60
+amp_height = battery_height + amp_bottom_height + 4
 
 result = Workplane().box(amp_length, amp_width, 2)