Diamond Drill help!

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Hey guys, so I started playing Attack of the B team yesterday, and just discovered the diamond drill today. I thought hey that's pretty cool, so I made it. And it doesn't seem to work. It doesn't break stone, or anything. What is it exactly that I'm missing? Any help would be appreciated! Thanks

[Melfice]

It's equipment for the Titan.

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Ooooh  I see, well thank you.