Very informative Christine, I know you have concerns about your writing which you really have no need to be the way you explain things in such an articulate way is brilliant and with your vast knowledge you really should consider writing a book,
I knew most of what you have said but I've also learnt some new things that didn't even cross my mind? I now use the sand paper method to flatten the bases after some theiving little ******'s broke into my van and stole most of my tools along with my steel lapping plate which I found so quick and easy to use to flatten the backs of chisels and planer bases 😀