I thought this looked very promising for those of us that are challenged with sharpening spokeshave irons, rabbeting plane irons, etc. I should be "beta testing" one in the near future and will keep you apprised.
woodnet.net/ubbthreads/showflat.php?Cat=&Board=handtools&Number=6969967&p age=0&view=collapsed&sb=5&o=&fpart=all