IMO, a dremel spins way too fast for the relatively soft pewter type metal. While, typically, you want to spin a smaller drill (bit) faster, the pewter (or lead) is a bit gummy, and the small bits are fragile.
Pin vise should be obtainable for ~US$20 or less and should take only a few minutes to drill out whatever you need.
If you feel you need a power option, a regular cordless drill should be ideal. You might need to get a collet or adapter to hold a small enough bit. The one that comes with the pin vise works nice.
One final tip: drill a second hole in your VTOL and base, clip the wire down to 2 shorter pieces. Keeps the VTOL from spinning on the base and makes it less tippy, and easier to fit into a mini case.
HTH!