I've used my Porter Cable 12" dovetail jig with good results but now I want to make a pennsylvania blanket chest that requires more than 12"s of dovetails. Should I spend $600 for an Omni Jig or is hand cutting dovetails something I might do without a couple of years of practice and get good quality dovetails. If so steer me to what I need to get started. thank you. Barry