I have an old Yanagi that I want to practice sharpening on before I go at the one I bought from Jon at JKI.
I've taken it to the stones a few times before, but the tip is stubbornly bent enough to be a pain in the a**. I've tried to straighten it by hand, but it still isn't how I'd like it.
I know people probably have DIY straightening blocks, and I think Dave used to sell them, but does anyone have design suggestions or know of vendors that sell them. Dave??
I found this link below, but $80 seems a bit high unless it is really a lot better product.