Use Flint and Steel for a controlled four-second fuse test; use Detonator when you intentionally want every placed TNT to light at once. Keep keybinds, range, cooldowns, and unlock requirements as in-game checks because the official source does not publish them.
The official source gives tool behavior but not every control detail, so this page turns the confirmed parts into a controlled in-game test.
The official Roblox description names two detonation tools: Flint and Steel lights TNT and the TNT explodes after four seconds; Detonator lights all TNT at once. Use Flint and Steel for one-chain timing tests, then switch to Detonator only when the same layout is ready for a full simultaneous trigger.
For TNT Voxel Playground Flint and Steel, compare one variable at a time: same TNT, same layout, different trigger.