Be happy to Michael. Go on line and look for ferrier files, the ones they use to file down horse hoofs. Get the best you can find, with a good handle. You want to get ahold of rib bones. Ask for them as long as they can provide them; like a foot long. Take a sharp knife and scrape away any of the remaining meat etc. leaving a clean bone. Store in fridge or freezer. Eventually the reddish cartalidge middle will start to smell a little fishy if left for longer than a couple of months in the fridge, hence using the freezer to store long term. Now to file, hold straight down into large wooden cutting board and you'll stroke up with the bone against the file. The material will 'clog' the ribbed file surface, ( the other side of the file is usually sharp bumps, the ribbed section works best) so get a wire brush used for getting rid of rust and run across the file in the direction of the ribs. Do this right over the cutting board. Then get a good 3 inch wide paint scraper and gather up the bone dust and scoop into a spoon and eat. Sorry about the non metric references. I eat it when I start to get hungry before my first meal. It then fills/takes off the hunger edge for me temporarily and then in maybe a half an hour, I get hungry again, and that is when I eat my meat then fat. I think we need all the acid in our stomachs to digest it, and believe that even though bone has a lot of protein itself, the concentration of mineral leaves your stomach more alkaline in the end, hence not mixing it with meat, so that I don't alkalize the stomach with the bone. Obviously experiment on your own. I eat about one or two ribs per week, and feel good about knowing that I am getting all the elements my body needs to build bones. Bones have such an array of nutrients that go to make them up, it seems silly to miss out on that offering. Yes the blood has all essential elements and it does pass through meat/muscle/tissue, but like organs, each part of the body pulls from the blood what it needs. Feel free if you want further clarification on any of this. Also I keep the file in the fridge so when I file the bone, it and the grinder are cold and that helps to prevent any heat build up. I do this a couple of times a day, and like to eat about four tablespoons a day. Van