This might be productive:
http://blog.woodturnerscatalog.com/2...rrel-trimmers/
So what I learned there is the method of sharpening that style of cutter is well within the reach of average folk and no special tooling required!
Next I searched “credit card sharpening stones” and see different brands specs and prices .... economical compared to the brand of stone touted in the video.
Three44s