diff --git a/bobbin.json b/bobbin.json
index a7ce74a..06ccc74 100644
--- a/bobbin.json
+++ b/bobbin.json
@@ -5,9 +5,9 @@
             "CoreGap": "0",
             "LegDiameter": "16",
             "LegLength": "30.399999999999999",
-            "NumberCoils": "1",
-            "ShieldDiameter": "26",
-            "ShieldThick": "2",
+            "NumberCoils": "10",
+            "ShieldDiameter": "44",
+            "ShieldThick": ".6",
             "YokeHeight": "12.140000000000001",
             "YokeLen": "28",
             "render_fa": "0.40000000000000002",