See how to open a lock without a key (cylinder) when, for example, you lose your key. All you need is a screwdriver and a good metal drill, and you will also need a punch to mark the drilling site (or a hard drill, like on a film).
More expensive inserts are secured by drilling with special pins or plates, but each insert can be drilled, the most important thing is to have a decent drill and more time.
WARNING: Protect your eyes with special goggles so that metal filings do not fall into your eye !!! Big risk of eye damage!
As you can see above in the film, ordinary GERDA cylinders and others are not safe and should be considered for a specially reinforced, which will resist in a much larger way to a potential thief. The movie uses a cheap, old metal drill bit, and if I used more pressure, I would probably open the lock 2x faster. When using a professional metal drill, the effect could be even faster.
And what do you think about ordinary, cheap cylinder inserts in the door? In my opinion, better to add more and buy a decent attested insert to the zipper, than the cheapest product.
1. How to break a cylinder:https://youtu.be/OLFgPugaI8g
2. How to replace the tumbler:https://youtu.be/i-3DR1GwxdU
3. Cylinder cylinder, rules of assembly in the door lock:https://youtu.be/36cc7_CG_zk
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