Does anyone know how an anti drill tamper works and how i could make one myself?

Depends on what your tampering with

57 minutes ago, Jack b said:

Does anyone know how an anti drill tamper works and how i could make one myself?

 

A bell with plastic lid can a have pcb with track which forms a 24hr circuit like cc wiring

 

A metal bell can a have circuit made between inner & outer cover which is completed by the drill bit

 

Edited September 2, 20196 yr by MrHappy

IIRC haven't Elmdene Rapiers used both PCB and bridge methods over the years?

7 hours ago, MrHappy said:

 

A bell with plastic lid can a have pcb with track which forms a 24hr circuit like cc wiring

 

A metal bell can a have circuit made between inner & outer cover which is completed by the drill bit

 

Can any of these be easily made?

Yes 

These use to be popular in the 90's for those of us who remember the good old expanding foam attacks. 

I recall removing a few older bells that have a wired lug attached to one of the rear bell box back plate screws (would be protection against the bell being ripped off the wall)

The wiring was linked to the tamper circuit.

I remember a old skool metal double skin bell box with drill tamper and a pendulum fitted inside in case  anyone gave it a whack!  

Funny how attitudes have changed over the years.

11 hours ago, james.wilson said:

Yes 

So i large circuit board or something with wires that go into the tamper terminals?