In a message dated 31/10/05, paleoartifact@......... writes:

> Obviously uncoated carbide isn't a utopia material for this application; 
> which I
> think most of the carbide sold today is probably with the same "rough"
> initial surface, and any applied coating wouldn't seem to enhance this use. 
>  bearings to rest 

> on flat uncoated carbide milling bits; it didn't work there very well 
> either. 

Hi there,

       If you buy carbide drills of either type I recommended, you will find 
that they have a very nearly mirror polished surface.

       Regards,

       Chris Chapman.
In a message=20=
dated 31/10/05, paleoartifact@......... writes:



Obviously uncoated carbide=20=
isn't a utopia material for this application; which I

think most of the carbide sold today is probably with the same "rough"

initial surface, and any applied coating wouldn't seem to enhance this u=
se.=20

The results were rather similiar, where I tried acouple ball bearings to rest 

on flat uncoated carbide=
 milling bits; it didn't work there very well either. 




Hi there,



       If you buy carbide drills of either=
 type I recommended, you will find that they have a very nearly mirror polis=
hed surface.



       Regards,



       Chris Chapman.