Run Uranium-238 through cell membranes, and capture the Uranium-235 particles.

Obtain 33 pounds of enriched Uranium-235.

Encase trinitrotoluene inside a steel box.

Encase Uranium-235 in the same steel box with 90% concentration at minimum.

Place a fuse linking the trinitrotoluene to a switch - either radio controlled, or manually burned.

Detonate the trinitrotoluene. This will cause nuclear fission, which will then result in nuclear detonation.

Step 1: Buy Uranium-238 from Amazon.
Step 2: Boil uranium into a gas.
Step 3: Run Uranium-238 through cell membranes, and capture the Uranium-235 particles.
Step 4: Obtain 33 pounds of enriched Uranium-235.
Step 5: Buy 10 pounds of trinitrotoluene.
Step 6: Encase trinitrotoluene inside a steel box.
Step 7: Encase Uranium-235 in the same steel box with 90% concentration at minimum.
Step 8: Place a fuse linking the trinitrotoluene to a switch - either radio controlled, or manually burned.
Step 9: Detonate the trinitrotoluene. This will cause nuclear fission, which will then result in nuclear detonation.

How to make a nuclear bomb.