Re: ATM Making a Pinhole

[<wffinney@mailbox.syr.edu>]

Another way would be to find someone with an eximer laser to burn a hole
in shim stock for you.




On Thu, 20 Jun 2002, Anthony Stillman wrote:

> 
> I not sure where I learned this.  I do know I've been making pinholes this
> way for roughly the last thirty years.
> 
> In thin metal stock, I generally use brass shim, against a hard surface,
> use a pin point to press a small dimple into the metal (not through).  Use
> very fine sandpaper (600-1500) against a flat surface to sand off the
> dimple.  The size of the dimple and how much sanding will determine the
> size of the  hole.  Using this technique, I've been able to make quite
> small holes with relatively clean edges (10 um in Ti foil).  On occasion I
> tried to gently burnish the edge of a larger hole with the tip of the pin.
> I've had limited success with this.
> 
> Anthony
> 
> 
> 
> 

________________________________
William Finney
Graduate Student
Department of Chemistry
Syracuse University

wffinney@mailbox.syr.edu
________________________________