Bill Blackburn wrote:
> Hi Guys
>
> For the fellows who are mechanically machining their own PCB's, what is
> the choice of Spindle Motors? How do the RotorZip units work for this
> application compared to using the Dermal units? I was never very
> impressed with the bearings in the Dermal Grinders. They don't seem to
> last and get loose rather quickly. Interested in your thoughts on this
> matter. Thanks for the help.
>
> Regards
>
> Bill
Dremal's are designed for engraving, grinding and other small low
precision odd ball jobs. I would suggest you look at industrial "die
grinders" or otherwise known as "straight grinders". These hand held
tools are at least fitted with a hardened steel ground collet. For PCB
work I use a -
http://bosch.cpotools.com/grinders_and_metalworking/die_grinders/1210.htmlAlthough they are over sized for the job, they are relatively cheap (for
a spindle motor with a true collet) and reliable.