I put them in my bench vise and use a hacksaw with a sharp fine tooth blade. The edge of the vise helps keep the blade in alignment for a perpendicular cut.
After harvesting a bird, I take the legs off at the knee and put the feet and beard in a ziplock bag and toss 'em in the freezer. When I get time to process them, the skin has dried out to some degree and that helps you get a clean cut vs a fresh leg.
One of these days I'll post a photo of my beard board. I glue a one and one half inch long piece of 3/4 in dowel in the empty shotgun shell hull and cut the hull 1 inch down from the brass. I drill a hole through the center right above the brass to thread a cord through. With a spur on each side and the beard glued in the bottom, they display nicely when hung from a peg.
Thanks for the use of your thread Jim.
"The joy of living is his, who has the heart to demand it." Teddy Roosevelt