The handiness skill affects how well you are able to repair and upgrade objects.
How to learn Handiness
- Repair or upgrade objects
- Read the handiness skill books.
- Electrician - After repairing 10 electrical objects, you are immune to electrocution from electronic objects. (That might mean that your Sim can still get electrocuted in other ways, but I don't know.)
- Plumber - After repairing 10 plumbing objects, any plumbing objects that you repair after that will never break again.
- Tinkerer - Perform ten unique upgrades on household objects. Unbreakable only counts once, so any subsequent Unbreakable upgrades that you perform won't contribute to this total.