A homeowner working on a BMW cooling system overhaul shears a bolt off inside an aluminum head, and then breaks an extraction bit, leaving a blocked hole that cannot be drilled out easily, and lacks a welder and welding skill to resolve it.

Workarounds Described

• used extraction bits that snapped
• considering buying a welder with no experience to weld a nut onto the broken bolt

Implied Software Gaps

• Step-by-step bolt removal guidance that accounts for broken extractors and suggests alternative methods

Bolt Rescue

Bolt Rescue is a mobile app that guides DIY mechanics through the best bolt removal strategy for their specific situation. It uses a decision tree based on bolt location, material, corrosion level, and available tools to recommend the highest-success method, including step-by-step video instructions and tool recommendations. It eliminates guesswork and reduces broken tools and costly mistakes.