If you want to produce crankbaits in volume, it really takes a dedicated shop full of power machines and a bunch of custom jigs to do it with consistent quality. Power tools make it go faster but they can't make it go better until after you learn how to build a good crankbait - and that's the real challenge. I recommend you start with the power tools you can afford and build baits for a few years. See if you like the process: the amount of detail work it requires, the design knowledge you need to have, the artistic ability, the amount of patience required. I've been building crankbaits as a hobby for 17 years with a scroll saw, a Dremel tool, a power disk sander, a carving knife, sand paper, and an airbrush. I enjoy the process. I'm still learning. If I weren't, I'd become bored and give it up. I know guys who use many power tools and guys who use no power tools. The tools don't determine how good you can build a crankbait, only how fast.