I built an extractor many years ago just for fun. As stated earlier, unless you have access to cheap, secondhand materials, it can quickly turn into an expensive exercise. The one that I made used a large plastic drum and was powered by an electric drill. It worked and did the job but in the end, I gave it to a mate and bought a cheap Chinese unit which I used for a couple of years. When you start out keeping a few bees, money keeps on falling out of your wallet in a regular stream. Any method that you can adopt to keep those costs down will allow you to get established without the huge money burn. It really comes down to how many hives you intend to keep and the time that you want to spend on beekeeping tasks. If I had a couple of hives, I?d tend to go for crush and strain and forget the extractor altogether. A small cheap extractor would comfortably handle up to about 10 hives with no issues. Above that, I?d follow Jim?s advice and get a much larger unit to handle more frames.