Hey highland

I still haven't forgotten about my "Making a sgian dubh" tutorial idea I asked you about.

Does your sgian dubh blade have a stick tang or a bar tang? In case you don't know the "tang" is the non sharpened part of the knife which connects to the handle. A stick tang usually screws into the handle somehow, while a "bar" tang usually has holes which the rivets or pins pass through

I think you'll want your chunk of driftwood to remain intact on the outside without any visible seams or obvious places where wood is glued together.
My suggestion is to get a dremel or similar type tool (a regular 3/8" carpentry drill would also work)an auger bit is what you want as you can carve whatever shape hole you want, as opposed to a regular drill bit which is restricted to a round hole.

I hope this helps.......I'll check back with you to see how the project is coming.

Brasilikilt