Hook: Centerpiece (Giant Purple Square)The Large Mining Drill decoration fits into a giant purple square floor hook with beams of light.
How to Get a Large Mining Drill Decoration
Cartel Pack Decorations
The Large Mining Drill decoration can be dropped from Plunderer Alliance Packs, which were released on the Cartel Market and bought with Cartel Coins. Cartel Packs, including the Plunderer Alliance Pack, include a random selection of items from the Plunderer Alliance collection of items. You aren't guaranteed to get a Large Mining Drill decoration from a Plunderer Alliance Pack, but it is one of the few ways to get a Large Mining Drill deco apart from buying it on the GTN from another player.
If you're looking to get a Large Mining Drill, the easiest way to get it is to head to the Galactic Trade Network (GTN) in SWTOR and buy it with credits from another player. If it's very rare and not available on the Cartel Market, you could try buying from the GTN and hope you get it.