Diamond Drill is a Tier 1 IC2 mining tool with a 30,000 EU buffer that mines obsidian fast.
Guide
Collect 1 Mining Drill (already charged or empty) and 3 vanilla Diamonds in your inventory before opening a crafting table.
Place the 3 diamonds across the top row of the crafting grid and put the Mining Drill in the center slot to produce the Diamond Drill.
Drop the Diamond Drill into a BatBox, MFE, or MFSU connected to an EU source so its 30,000 EU buffer fills up.
Hold the Diamond Drill and right-click in the air to toggle between low-power (EU-efficient) and high-power (fastest) mining modes.
Use the Diamond Drill like a pickaxe on stone, ores, and obsidian, then return it to your power storage block when EU runs low.
Place 3 diamonds across the top row of a crafting table and put a Mining Drill in the center slot — this yields one Diamond Drill in IC2.
The Diamond Drill stores up to 30,000 EU and is a Tier 1 device, so it charges in a BatBox, MFE, or MFSU without overload.
Yes — in high-power mode the Diamond Drill matches or beats a vanilla diamond pickaxe on stone and ores, and it also mines obsidian.
Yes, the Diamond Drill mines obsidian like a diamond pickaxe, just costing EU per block instead of durability.
Drop the Diamond Drill into a BatBox, MFE, or MFSU connected to an EU source such as solar panels or a generator until its 30,000 EU is full.
The Mining Drill is the base IC2 drill, while the Diamond Drill is its diamond-tier upgrade with higher mining speed and the ability to break obsidian.