Yeah, it's way overbuilt. I made it from material left over from several other projects, which really kept it cheap.
I'd never seen an extractor in person, just pictures, so I didn't know how heavy to build it. I recently saw an extractor and realized that I had built it much heavier than it needs to be...
Don't be so sure. You'll probably be surprised at how heavy nine frames full of honey are and the resulting inertia forces when they start going round and round and round.