Re: [CAD_CAM_EDM_DRO] collets

Lew.
If you say an R8 will have enough meat in it, buy an "emergenecy" (soft)
collet as this is intended to be machined.
RichD

LEW BEST wrote:

>
> Hi All
>
> Sorry to post this to so many lists, I know some of you are on multiple
> lists and this will get repetitious.
>
> I need to try to make a collet. The design is like a 5C with external
> threads but much smaller. An R8 is only slightly larger in outside diameter
> (I thought I might be able to turn down and externally thread an R8, would
> also need to slightly flatten the nose taper. However after reading the
> specs in the Mcmaster catalog I feel they are probably too hard steel to
> turn.
>
> The collet I need is for a Black Diamond 31 drill grinder, is the large
> collet that holds the larger bushings and the 3/4" bit for sharpening. BD
> wants $120 some-odd for the one collet so I'd like to try to turn one
> myself.
>
> All it does is hold the bit in place for sharpening it, no high torque as in
> milling, drilling, etc. I'd appreciate any suggestions as to material to
> use, how to cut the 3 thin slots on the face that allow it to tighten, etc.
> BTW my eq is all manual, even though the CAD CAM group is included in the
> list. I get good info from all the lists!
>
> Thanks
>
> Lew
>
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> bill,
> List Manager
>
>
>
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