[Elecraft] Wood bits

[Jack Smith]

> On this side of the lake these bits are known as "brad-points"...There is another similar type known as "Forstner", but they are much more expensive and I am not sure they are available in the smaller diameters...
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After a few days use, I've found the diamond core drills to work pretty 
well for making island pads. Depending on where you purchase them and 
the drill size, the price runs between $4 and $12 each. They seem to be 
available commonly on Ebay as sets from Hong Kong. Domestic US sources 
are more expensive. The diamond core drills are used in stained glass 
and rock collecting hobbies. They are a true core drill and do not cut a 
center hole. This also means the work can get away from you if not 
clamped to the drill press table.

I have 5 mm (3/16"), 7 mm (1/4") and 8 mm (5/16") core drills and find 
myself using the 7 mm more than the others.

Jack K8ZOA