I did use Ferric Chloride for the etch. Mixed up some satanite clay to a sour cream consistancy and applied that to the blade in the pattern you see on the blade. Heated to just past no magnetic and quenched in maxim oil d-48. After hand sandwiches by to 800 grit I let is sit in a glass jar with the ferric chloride for a couple of minutes and then rubbed it down with 0000 steel wool. Washed that off with winded and then a good scrubbing with dawn and the finished it up with flits metal polish and a coat of briwax. It's really pretty simple and fun to play around with. Thanks for the comments!