It's really best to use a flycutter. Search that online. I picked them
up on  eBay for about 10 cents on the dollar compared to buying them
from traditional stores.

BenT

On Jul 15, 2010, at 10:04 PM, Shawn Wright <vwdiesels@GMAIL.COM> wrote:

> Ok, machining 1.5mm material from EV wheels is not as easy as it
> looks...
>
> Friend has a milling machine I can use (big 2hp drill press with
> sliding
> bed), but is away for a few days. Any suggestions on what type of
> bit to
> use? I looked at what he has and couldn't find anything suitable. If
> I could
> machine a 2.5" (63mm) hole dead centre (or close) I'd be set. Can I
> get a
> hole saw for cutting steel?
>
> A grinding wheel on a drill isn't going to do it...
>
>