diff --git a/calibration/test rings v2.scad b/calibration/test rings v2.scad
deleted file mode 100644
index 382a016..0000000
--- a/calibration/test rings v2.scad	
+++ /dev/null
@@ -1,35 +0,0 @@
-// --- NEW CALIBRATION TRIO (TIGHTER RANGE) ---
-$fn = 100;
-
-pvc_od = 33.4; 
-wall = 4;
-height = 10; // 10mm tall for speed
-
-// New tighter offsets
-offsets = [0.05, 0.15, 0.25]; 
-
-module test_ring(offset, index) {
-    id = pvc_od + offset;
-    od = id + (wall * 2);
-    
-    translate([index * (od + 10), 0, 0]) {
-        difference() {
-            cylinder(d = od, h = height);
-            
-            // Clean hole through
-            translate([0, 0, -1])
-                cylinder(d = id, h = height + 2);
-            
-            // Identification Notches
-            for (n = [0 : index]) {
-                rotate([0, 0, n * 20])
-                translate([od/2, 0, height/2])
-                cube([4, 2, height + 1], center=true);
-            }
-        }
-    }
-}
-
-test_ring(offsets[0], 0); // 1 Notch  (0.05)
-test_ring(offsets[1], 1); // 2 Notches (0.15)
-test_ring(offsets[2], 2); // 3 Notches (0.25)
\ No newline at end of file