How to Cut a Hole in a Glass Aquarium for a Tube Into Another Aquarium
- 1). Empty the contents of the aquarium and thoroughly clean and dry the glass.
- 2). Position the aquarium on its side, with the surface you intend to drill facing upward.
- 3). Attach a round-head diamond bit to your electric drill, following the manufacturer's instructions. Choose a bit which is the size of your desired hole.
- 4). Apply a liberal amount of drilling lubricant to the area of the glass you will be drilling.
- 5). Turn on the drill. If your drill has a speed control mechanism, set the speed at 3,000 rotations per minute. Set the speed slightly lower for larger drill bits.
- 6). Lightly press the drill bit against the glass. Use a firm grip to keep the bit from shifting, but do not apply any downward pressure to the drill. Unlike other materials such as wood, glass must be drilled "at its own pace."
- 7). Apply additional drilling lubricant if the surface of the glass or the drill bit takes on a yellowish tinge or if the drilling causes a burning smell.
- 8). Turn off the drill once the hole is complete. Wipe away the drilling lubricant with a clean, dry rag.
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