So this is where I've gotten to today:
Drill three holes and then used the bit to route out the slot. The tang on the HD2 is 110mm long so a fair amount of work.
This iteration I tried going with the 7/64" drill bit. With the block, I can say that the holes look to have been straight enough that the blade is essentially straight with the handle. However there was a slight offset of the holes and with how tight this drill bit makes it, the blade is rotated slightly at the moment. I'll have to use some files to straighten that out.
Drill three holes and then used the bit to route out the slot. The tang on the HD2 is 110mm long so a fair amount of work.
This iteration I tried going with the 7/64" drill bit. With the block, I can say that the holes look to have been straight enough that the blade is essentially straight with the handle. However there was a slight offset of the holes and with how tight this drill bit makes it, the blade is rotated slightly at the moment. I'll have to use some files to straighten that out.