To make a black hole in Drill to Earth’s Core on Roblox, the most direct clue I found is a recent tutorial-style post that says to use a mix of 70% black concrete, 15% coal blocks, and 15% black wool for the effect.

What that means

That recipe looks like a build/visual trick , not a real in-game physics black hole. It’s likely meant to make the area look like a black hole for screenshots, videos, or a themed build.

How to try it

  1. Open your build or construction mode in the game.
  2. Place black concrete as the main body.
  3. Add coal blocks and black wool in smaller amounts.
  4. Shape the blocks into a circular or swirling form so it reads like a black hole rather than a flat blob.

Extra context

There are also videos and guides around Drill to Earth’s Core and related Roblox drilling games, which suggests players often use creative builds and challenge runs rather than a single official “black hole” mechanic. A separate wiki page for Black Hole Core also describes a game centered on keeping a black hole open, so the phrase can refer to different Roblox experiences.

Important note

If you meant a specific Roblox game mechanic rather than a visual build, the exact steps may differ by game mode or private-server settings. The safest answer from the current public info is that this is mainly a block-composition build recipe rather than a universal Roblox feature.

TL;DR: Use mostly black concrete, then add coal blocks and black wool to shape a black-hole-looking build.