Viel conversion

[Rick Kr]

Hey guys!
...snip...

Do they make a 15mm drill bit, or an imperial size that matches? 

Thanks! 
Garry Ordener 
Garry’s Knife Sharpening

Garry,

Yes, metric drill bits are available, as are metric reamers.  McMaster-Carr has both.

15mm drill bit (scroll down in the window that comes up)  $23.49
https://www.mcmaster.com/metric-jobbers'-drill-bits

15mm reamer (same deal with scrolling) $44.42
https://www.mcmaster.com/metric-reamers


Drill bits tend to cut oversized, sometimes by a couple thousandths.  Best way to minimize cutting oversized is to drill it out first with the closest undersized inch drill (37/64" in this case, 0.781"). 

A better option is to ream it, but that comes at a slightly higher cost.  Again, best way and about the only way is to drill it first with the closest undersized drill.  In the case of reamers, they have a limited range of how much they can cut/remove, so you pretty much have to get quite close to the finished size, which improves the reamer cutting to size.  

Rick