Its according to the type of wood, but I would not recommend it, a soft wood wood tend to fill up blade
Yes, this product is designed to cut through mild steel up to 1/8 inch thick.
No, the blade is too big.
its according to the thickness of the top
It will, but i suggest a metal cutting blade in a 4.5 inch grinder.
Yes, that's how I'm using my blade.
You can, but you shouldn't steal doors