Re: [CAD_CAM_EDM_DRO] CNC lathe retrofit and phase converter

Hey, all it takes is a bit of practice. I have to admit, though, setting the
blank in a file making jig, and giving it a swat with the power hammer is a lot
more efficient.....

Bill

On Wed Jan 9 07:46:45 2002, Smoke, <smoke@...> wrote:

>I'm really surprised to see this info here! It was told to us by the
>instructor (now retired) at the college. We had to make a lot of tools but
>fortunately making a file wasn't one of them!
>
>Smoke
>
>> >Question #3: (OT)
>> >How are file teeth formed?
>>
>> With a hot chisel and a hammer, allways remembering to chill the chisel
>> frequently by dunking it in a bucket of water, so it won't lose it's
>hardness.
>> When you have enough teeth, let the file blank cool. Press refractory
>down into
>> the chisel cuts, and smooth it off such that the cutting portions of the
>teeth
>> are exposed, and let the refractory dry. Heat up the blank to the proper
>> temperature, and quench till cool, at least till it doesn't, "smoke", when
>you
>> pull it out to check. You now have tempered, "hollows", and full hardened
>> cutting teeth, i.e., a file.
>>
>> Bill

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