Karl

Go to a library or bookstore and find a good book on woodworking - one that
describes sharpening of blades and tools.  There is a tool called a scraper
(or cabinet scraper) that is simply a piece of steel with which you scrape a
surface smooth.  I don't use one, but the ones I've seen are probably
0.005"-0.010" thick, in the range that you are dealing with.  The procedure
for sharpening scrapers is well known and is described quite fully in many
books.  It involves first grinding to  a  sharp, smooth edge and then
"burnishing" to get  the burr that you desire.  The burr is the key to
making the scraper work, so the technique for creating it will be explained
in some detail.

Bob Horning
Honeywell Technology Center

> ----------
> From:         Karl Cazzini
> Reply To:     Karl Cazzini;mems-cc@ISI.EDU
> Sent:         Friday, April 23, 1999 4:12 PM
> To:   MEMS@ISI.EDU
> Subject:      forming feather edges / burrs in metals
>
> I am trying to form, good quality, homogeneous feather edges (or burrs) on
> thin metal strips (0.006" thick), by grinding and / or polishing methods.
> I
> realise that most peolple want to eliminate these "burrs" or feather
> edges,
> however I actually require them! I am grinding stainless steel strips (~1
> inch long, 0.006" thick) at angle of about 15 degrees, on a rotating
> abrasive disk. If the abrasive is too course, a poor quality,
> inhomogeneous
> feather edge results. I want to form good quality, homogeneous and
> REPRODUCEABLE feather edges in SS, for a MEMS application that I am
> working
> on. Any and all assistance would be most welcome. Please remember that
> this
> is something I must be able to do in-house. I do have access to quality
> polishing and grinding equipment. Any assistance would be greatly
> appreciated. Thanks very much, Karl.
>
>
> ******************************
> * Karl H. Cazzini (Ph.D)     *
> * Conifer Group & Associates *
> * 116 Cochituate Road        *
> * Framingham MA 01701        *
> * USA                        *
> *                            *
> * Tel(W): (508) 620 8845     *
> * Fax(W): (508) 620 8830     *
> * Tel(H): (508) 875 2009     *
> ******************************
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