Re: Machining

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Matthew Smith <matt-at-kbc-dot-net.au> 

Ed Wingate wrote:
>Titanium nitride coated tools are worth the extra cost for many
>applications.

My (limited) experience of drilling G10 PCB stock with a cheap'n'nasty 
drill press (the Aussie equivalent of one a US 'Harbor Freight' machine) 
confirms this.  Although for the sub-1mm holes, I have to use carbide bits 
with an oversized shank, as they are all I can get.  It's an expensive job 
as the play on the chuck causes a lot of breakages.  1mm+, I have a set of 
TiN coated bits.  These are just beau-u-u-tiful on PCB stock, cut fast, 
don't break* and leave good, clean holes.

I would extrapolate this out to be good for RSG rotors of similar materials.

Cheers

M

*I had to go and say it, eh?  My next drilling job is doomed ;-)

-- 
Matthew Smith
Kadina Business Consultancy
South Australia
http://www.kbc-dot-net.au