I've recently bought an old Stanley No71 router plane, which has cleaned up ok, I now need to sharpen it!! Half inch cutter first, I've flattened the bottom and got an nice even, square primary bevel, the question is where do I hone the secondary bevel, if at all ?? Paul Seller has a video showing him putting a secondary bevel on the bottom of the cutter, parallel with the base of the plane. Rob Cosman puts a secondary bevel on the top of his cutter, like the iron in a block plane, or do I just hone the primary bevel until a burr is raised and then strop? Any advise on which method gives the best results.