Making Hard Sector Floppies

[Dave McGuire]

On Mar 30, 2010, at 12:12 PM, dwight elvey wrote:
> A 35W is more than enough. Do remember, you want to vaporize and
> not just melt. This does require focusing. IR is a pain to focus.
>  Two options; one is germanium lenses ( $$$$ ) and the other is gold
> first surface mirrors ( $ ).

   Why use IR?  Visible (either native or frequency-multiplied)  
lasers are readily and cheaply available in the required power range  
nowadays.  I have a few of them sitting on my desk.  Very friendly  
optics-wise.

            -Dave

-- 
Dave McGuire
Port Charlotte, FL