Disclaimer: altering your Buck knife in any way voids the warranty and can be dangerous. If it is not put together correctly, the lock integrity can be compromised.
So keeping that in mind, this is how my rework guy does it.
He starts with a small wedge which is inserted inside the open knife, close to to the blade. One good smack with a small hammer spreads the case slightly by popping the blade rivet.
Then he uses a very thin blade like tool. This tool is inserted between the case and the blade, just over the pivot pin, aka blade rivet. One good smack with the hammer shears the pin. Repeat the process on both sides of the blade and out it drops.
Then he drives out the remaining pieces of the pin that are in both front bolsters. Make sure you put a spacer between the bolsters before you start banging on it so the brass wont bend. An unsharpened blade works good for this.
Now the blade is out and you are ready to go.
Remember, we strongly discourage doing this sort of thing but if you do, PLEASE were saftely glasses and gloves. :thumbup: