<RJ> writes:> Is this a case of practice practice practice ?
No, you're missing two simple but vitally important things.
1. Use the fiberglass reinforced wheels. But even that is pointless
2. You *must* use coolant. If you're not equipped like a machine shop with
a mist nozzle, then just have a helper drizzle a stream of water, such as
via a Nalgene wash bottle.
See the end of my page here about cutting metal with Dremel disks and the
vital need for coolant:
These cutting disks are so thin, they overheat and disintegrate in seconds
if you run them dry into metal.
I haven't tried the cheap disks with coolant; it may be that they will work