I've reviewed on-line resources until my fingers are blistered, and I finally got a half-backsided edge on my card scrapers.
I'm filing down with a fine single cut file, using a wood block as a template to remove imperfections;
I then smooth the edges with a 4000-ish grit DMT diamond plate, being as close to perpendicular as I can - sharp edges on both sides.
I then smooth the sides of the plates using the same 4000 to try and make a proper 90 degree surface.
First question; in drawing out the steel (it's on the granite top of my Rigid table saw) how much pressure do I need to put on the scraper? I use a Veritas Tri-burnisher, and I swipe it in my mineral oil soaked rag before using. It applies to my 2 scrapers, a Bahco and a generic Lee Valley.
Second; I do get a very small hook, but I'm working with Oak, and I'm not getting the kind of shavings the on-line videos show. I'll keep working on technique, obviously.
Third; again, using Oak, how long should to hook last. It seems I scrape one or two small areas, and I have to go to the next edge. Is this a function of the poor hook, or not enough pressure in working the initial edge, or what?
I know it's nearly impossible to diagnose this long distance, but any hints would be appreciated.