Forward lanyard hole BK9???

[Balldboy]

What size hole are you drilling?
It may not be the hardness of the knife, the bit may be flexing.
Try putting the bit deeper in the chuck.

Were they Swedish bits?

 

[Bobber]

Tried everything from 1/18 to 1/4 ", put them all the way to the end of the chuck, no luck.

Think it may have been drillbits from all over, LOL, German, swedish, chinese, all the drillbits I could scramble together in my shop, flattened them all.....

 

[Bladite]

The old Blackjack BK5 had a hole is that something like what you're thinking about? Probably closer to the back edge of the knife instead of the blade side though, I'd imagine.

This image is from the Becker Blade Database

that particular hole is for the pin-lock sheath - there's an actual metal pin that goes through the knife and locks it into the sheath. sweet.

i've seen a Cammy model someone did that to as a mod, and used an old sheath. cute, but not original.

 

[Balldboy]

Bobber...your mailbox is full.
American Full not Norsk Full.

 

[Bobber]

@Balldboy, not anymore it isn`t....

 

[thatotherguy]

Anyone have an idea of what to try next, aven tried the ones the locksmith uses to drill locks in appartment doors, it just barely made a mark before it went dull.......

Carbide!
That stuff cuts steel like paper

 

[Balldboy]

Carbide!
That stuff cuts steel like paper

We have a winner.
Slow RPMs.
Might even lay the blade in a large pan filled with oil to dissipate heat.

http://www.wlfuller.com/html/drills_for_hardened_steel.html