diff --git a/personal/sharpening/Stropping.md b/personal/sharpening/Stropping.md
index f168d8b..e659963 100644
--- a/personal/sharpening/Stropping.md
+++ b/personal/sharpening/Stropping.md
@@ -16,7 +16,11 @@ With a loaded strop, abrasive compound is applied to the strop to increase the r
 
 The effect of stropping happens quickly, within 3-30 laps, and 10 laps being the minimum needed to achieve the desired effect. Stropping past 30 achieves minimal change, and stopping past the hundreds may introduce a burr again.
 
-It was generally noted that when stropping with a very fine compound (eg, 0.25 micron), a small but consistent burr would form. When stropping with a coarse compound, a larger burr would occur, but one that formed unevenly. To achieve the best of both worlds, it's suggested that you start stropping with a coarse compound, then move to a fine compound.
+It was generally noted that when stropping with a very fine compound (eg, 0.25 micron), a small but consistent burr would form. When stropping with a coarse compound, a larger burr would occur, but one that formed unevenly. To achieve the best of both worlds, it's suggested that you start stropping with a coarse material, then move to a fine material.
+
+> Successfully designed stropping progression should involve different strop materials rather than different sized abrasives on the same substrate.
+
+I can't find the exact source, but it seems that denim and a loaded leather strop with between 0.5-0.25 micron compound would be ideal.
 ## Strop Material
 There are a variety of stropping materials available for use, common materials include leather, denim, newspaper, washcloth, and balsa wood.
 ### Balsa