Categories DavidRazor strop fungus in Sutton Park Post author By David Post date 14 April 2011 Birch polypores could be used to sharpen old-fashioned cut-throat razors. The birch tree these were growing on was by the road in Sutton Park. The trunk was in effect a ten foot tall stump, lacking any branches. ← Apple buds → Sandstone cliff by river Stour aqueduct