Homebrew PCBs

Russell Shaw wrote:
> You can drive the motor in any laser printer scanner head. It's only a 
> problem
> getting motors if you want to build your own head and optics.
> 
> You could pull apart an old hard-disk and mount a mirror on the platter.
> Drive the 3-phase motor yourself. At 30k rpm, you'll need to be very good
> at balancing/centraliz ing the mirror, and have it *firmly* stuck down or
> it might launch off in to outer space.
> 


Those links to data sheets are of complete polygon mirror motor 
assemblies. You supply 24V and then point a laser on them. I don't think 
I can fabricate anything close to such precision. The mirrors flatness 
and symmetry are absolutely critical.  They look like mass produced 
items so I don't think they should be expensive. But where ?

This mob specialises in polygon mirror motor assemblies. They have lots 
of technical application notes too.
http://www.lincolnlaser.com/index.cfm

Adam