Hi Andre --
My experience with these drills is that they come with a large (1/8”) shank
that tapers to the actual drill size. I once was given about a thousand of
them in different sizes and was in the middle of sorting them when the box
got dropped. Of the group, only about ten survived, and they were all
fairly large (3/32”+). They are VERY brittle. You can not freehand
them – both the drill and the work has to be absolutely anchored so that
there is no lateral movement possible. Lubricant is probably a must...
Have fun!
Bill Winans
--------------------------------------
Hi Dave:
Thanks for the tip on the carbide drill bits. I have a drill press... but I
don't know if it will chuck down to .020". I'll have to remember to check
that.
Andre Ming
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