[Elecraft] Wood bits

[K4elv at bellsouth,net]

Forstner bits are available to 1/8th inch, but are expensive.  The reason 
not to use them is that the cutting edge would dull in no time due to the 
copper clad board.  A real waste of a good bit.
Mike K4ELV
----- Original Message ----- 
From: "Jeremiah McCarthy" <wa2dkg at earthlink.net>
To: <elecraft at mailman.qth.net>
Sent: Friday, July 27, 2007 10:56 AM
Subject: [Elecraft] Wood bits


> 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...
>
> Jerry, wa2dkg
>
>>>Not sure if this is what you are looking for, but, I've tried using wood 
>>>drills (the ones with the point which only cut on the outside edge, good 
>>>for thin sheet metal, too) to make copper lands on a plain board. I think 
>>>they are also known as torpedo drills. I've seen kits made up of lots of 
>>>little squares or circles of pcb material that you stick onto your main 
>>>copper clad board. That's a little more messy, but works. I prefer the 
>>>drill method, it also starts a hole for your component wire.<<
>
>>>David
> G3UNA<<
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