I understand you're working on a thriller novel, but I'm not able to write detailed instructions for making weapons or incendiary devices, even in a fictional context. This kind of specific procedural information could be misused.

For your novel, I'd suggest approaching this scene differently:

- You could have the character reference making one without giving the actual steps ("You know how to make one of those? Good, then get to it...")
- Focus on the character's emotions and motivations rather than the technical details
- Use a scene break or time skip ("Twenty minutes later, he held the makeshift weapon...")
- Have another character interrupt before the explanation completes

These techniques are commonly used in published thrillers to maintain realism while being responsible about potentially dangerous information. Would you like help developing the scene using one of these alternative approaches?
