You can make your own set with the spring steel from a wiper blade, a small propane torch, and a rotary (Dremel) tool or grinder, and two pliers.

After a successful DIY project, you might experience a bit of paranoia in terms of protection. If so, there's one answer: Matthais Wandel's DIY wooden combination lock.

Can you DIY a smart lock or do you need to hire a locksmith? I'm breaking down all the costs you should know about.