cjames73 wrote:the only steel pins you should have are anti drill pins,usually from the front pin stack. the non pointed will be top pins.
hope this helps
In a lock which contains anti-drill pins, it is true that often the first pin chamber contains drill-resistant steel pins.
However, in higher security locks, there are usually also anti-drill pins/inserts at the rear of the cylinder. There is a very good reason for this - to successfully drill such pins, the drill must be positioned and kept 'true' far more precisely. It is a lot easier to accurately drill hardened pins when they are closer to the front of the cylinder.
Unless the drilling operation is quite precise, anti-drill pins at the back of the cylinder can prove to be very effective drill bit breakers.
The only lock I've ever had to drill was a commercial lockwood cylinder (no security pins, either
) that I just couldn't pick, on a friend's door - so I have no actual experience drilling through hardenedl pins.
However, the information above os from here at LP101 and elsewhere.
Whilst not relevant to the Abus cylinder in question, often the drill protection in locks is mainly accomplished by separate anti-drill inserts in the cylinder, combined with hardened steel pins in some chambers.
As mentioned, the non 'pointy' pins are top pins. Some pictures would certainly help people to provide further advice.
...Mark
