[sdiy] Easy Magic! (Swirling Panels)

[Cynthia Webster]

on 12/5/03 4:22 PM, john mahoney at jmahoney at gate.net wrote:

>> It made those really cool machined aluminum swirls that you see
>> on race car dashboards and fancy machine shop items! Wow!
>> 
>> A normal machine shop uses some special bit or tool for this,
> ...
>> But I just discovered that lots of ~randomly~ placed swirls
>> created by a spinning pencil eraser actually look really cool too!
>> 
>> (Who wouldda' thunk it?)  LOL!
> 
> Cynthia,
> I have to say that I'da thunk it, thanks to my middle school shop teacher
> Mr. Sherrick!
> 
> Congrats for discovering it on your own.
> --
> john
> 

Ok, but surely pencil erasers are not what machine shops actually use?

Anyone have any information on the real thing? (What is the process actually
called?)   It looks really great on a Synthesizer Panel!