Timeline for What is the purpose of the rotating plate in front of the lock?
Current License: CC BY-SA 4.0
21 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 10, 2019 at 15:58 | comment | added | JPhi1618 | Furthermore, hardened pins and other anti-drill measures are used to protect the pin stack from a small drill bit. A larger bit will chew up and remove everything but the focused, internal anti-drill measures will stop a smaller bit. | |
| Sep 7, 2019 at 23:23 | comment | added | supercat | @dwizum: A drilling attack with a bit that's slightly larger than that slot will be much easier than one with a bit that's slightly smaller. A larger hole will allow the pins, springs, etc. to be removed from the lock more or less intact. A smaller hole would require that they be ground up first using the tip of the drill bit--a process that would be complicated by the fact that drill bits aren't designed to cut sideways. | |
| Sep 6, 2019 at 14:30 | comment | added | dwizum | Check this video, he tried several drill attacks on a clear lock. It's very informative. youtu.be/zp4VmZzr7rg the old fashioned brute force method of drilling out the whole cylinder definitely needs a big bit, and the plate the OP asks about will stop that. Even with some of the "drill only the pins" approaches, you still ultimately need a drill wider than the slot, since the pins are often wider than the key blank. | |
| Sep 6, 2019 at 13:32 | comment | added | schroeder♦ | @Deunis the vendor brochures make it clear that this is likely an anti-drill plate. The follow-up question, which is beyond this question's scope is how effective it is. | |
| Sep 6, 2019 at 13:29 | comment | added | Deunis | @Schroeder you're right, there are different methods of lock drilling depending on the toughness of your lock. It will not block all of the drill attacks. | |
| Sep 6, 2019 at 13:20 | comment | added | Deunis | I can use a chainsaw too if I want. Doors are not indestructible. The goal is to mitigate the risks. | |
| Sep 6, 2019 at 8:24 | comment | added | schroeder♦ | @Deunis but several videos on the process do not show using bigger bits. That's what is causing confusion for many (including myself). | |
| Sep 6, 2019 at 8:23 | history | edited | schroeder♦ | CC BY-SA 4.0 |
deleted 12 characters in body
|
| Sep 6, 2019 at 8:22 | history | edited | Deunis | CC BY-SA 4.0 |
added 267 characters in body
|
| Sep 6, 2019 at 1:25 | comment | added | Roland Heath | I'm sure you could still drill eg. through the side of the plate, pin it in place using that hole, then drill in the usual way. But it still makes an attack more difficult/time consuming, and therefore more likely that an attacker will move on to a softer target. | |
| Sep 5, 2019 at 22:41 | comment | added | David Richerby | @JonBentley The linked page says to drill a pilot hole with a narrow bit, then use a wider one. Presumably, the plate stops with wider bit. | |
| Sep 5, 2019 at 20:51 | comment | added | Broots Waymb | @JonBentley - What I'm seeing is that if the bit were large enough to drill out the whole cylinder in one go, it'll end up gaining purchase in the plate just due to size. Of course smaller bits will go through with no trouble at all, but will drilling out such a small diameter in the lock gain the attacker anything (and to that I genuinely don't know; I've never drilled out a lock cylinder before)? | |
| Sep 5, 2019 at 20:27 | comment | added | Jon Bentley | @CarlKevinson I am sure I must be missing something obvious, but I still don't understand. Why do you need the drill bit to gain purchase in the plate at all? You just bypass the plate entirely through the slot (the same slot the key goes through). | |
| Sep 5, 2019 at 20:01 | comment | added | SnakeDoc | It also messes with tension bars if one attempts to pick the lock. It tends to pinch the pick in the lock as you apply tension on the tension bar, making it more difficult to pick. | |
| Sep 5, 2019 at 19:46 | comment | added | Carl Kevinson | @JonBentley I think the idea is that once the drill bit gains purchase in the plate, the plate just spins with the bit, preventing the bit from drilling any deeper. | |
| Sep 5, 2019 at 19:26 | comment | added | Jon Bentley | I don't understand why the drill bit won't be able to go through the cylinder. If they key can go through the slot, then why not a drill bit? Looking at your first link, it seems the OP's plate would not prevent following those instructions. | |
| Sep 5, 2019 at 14:07 | vote | accept | Thomas | ||
| Sep 5, 2019 at 13:59 | history | edited | schroeder♦ | CC BY-SA 4.0 |
deleted 54 characters in body
|
| Sep 5, 2019 at 13:56 | history | edited | Deunis | CC BY-SA 4.0 |
added 169 characters in body
|
| Sep 5, 2019 at 13:49 | history | edited | Deunis | CC BY-SA 4.0 |
added 263 characters in body
|
| Sep 5, 2019 at 13:37 | history | answered | Deunis | CC BY-SA 4.0 |