Re: Coffee table
Beautiful start! It's similar to sculpture, you're right. You'll need fine sanding tools (metal/wood buffer & polisher) for a smooth shiny look with metal and wood.
I found this on Amazon:
Finish/color buff is the finest buff process for surface finishing. The finish buff removes the fine lines created by the cut buff process, while creating a bright luster finish.
The finish buff is an easier, quicker, less pressure process than the cut buff.
Eastwood 17 Pieces Buffing Kit for Buffing Polishing All Types Metal & Wood
Eastwood The Art Of Buffing DVD 35 Minutes Of Basic Buffing Techniques For Aluminum, Stainless Steel, Plastics, & Wood