Why don't you try this book?www.amazon.com/Metal-Lathe-Build-Working-Scrap/dp/1878087010/ref=sr_1_3
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Your question doesn't give me enough information to answer you properly. 1. Are you wanting to make a machine that makes lathe bit tools? 2. Or are you wanting to make a lathe tool bit holder? 3. Or are you wanting to make a machine that would actually put a lathe bit to use which would be an actual lathe? If we knew what you were asking I'm sure that someone would have a good answer for you. Please elaborate.
Perhaps be a little more specific... ...and welcome to instructables!