But what if you can’t find the date of manufacture? It’s possible that you could try to use a dumpster diving trick to find the date of manufacture stamped on the outside of the safe. If you can find out the date of manufacture, there’s a good chance that the manufacturer or the original owner of the safe may still have the combination written down somewhere. This works best if you have a very old safe that may have been built before current security protocols were put in place. If you can find that information, you can contact the manufacturer and try to get the combination to the safe from them. If you happen to know where the safe was manufactured, you can try to find the date of manufacture stamped on the inside of the safe. If you don’t, keep at it until you do! Use A Dumpster Diving Trick If you happen to find the right combination, the lock will pop open. Next, try spinning the dial and moving the tumblers up and down. Make note of how many tumblers there are and where they are positioned. You want to see where the tumblers are as they move up and down as you spin the dial. If you have an old lock, the first thing you want to do is examine it. Because the lock is mechanical, it might be missing parts or have worn-down cogs that are easier to manipulate than a newer lock would. This method works best on older safes that haven’t been properly maintained. If the lock on your sentry safe is mechanical, and you have a little bit of time to work on it, it’s possible that you can simply mess with the tumblers in the lock until you stumble upon the right combination. Keep reading for step-by-step instructions on how to open a Sentry safe without a key! How To Open A Sentry Safe Without A Key Bypass The Combination Lockįirst, let’s talk about the most obvious way to open a sentry safe without a key: try to bypass the combination lock.

If possible, it’s best to practice opening the lock on an earlier version of this model or another smaller safe before tackling your own Sentry unit. Once you’re able to crack it open, however, there are still a few hoops to jump through before being able to remove the locking mechanism. Luckily, there are several ways to master the system and get into your safe without the key. The lock is one of the tamper-proof varieties that require a special key to open. If you’ve ever owned a Sentry safe, you know they don’t come with easy access.

Sentry safe open in safe without key