Andrew Case wrote:
> On Tue, 3 Dec 2002, Alex Fraser wrote:
>
> > One thing I forgot to mention was a micrometer carriage stop. That is unless
> > you are going to get digital read outs.
>
> A DRO is a big help, and well worth getting. Accurate measurements with
> dials is a nice skill if you have limited funds, but no reason to use it
> if you don't need it.
When I first use a machine with a read out I always check it against the dial or a
stop. Read outs depend on a sensor that can get dirty.
>
>
> > Yes, Aloris is a well known brand name. There are clones of course.
>
> I second the Aloris/clone recommendation. Also I recommend carbide insert
> tooling, There are inserts for just about every need, and it saves on
> hassle grinding tools. 99% of jobs can be done with inserts, and the few
> that require a custom ground tool are probably better shopped out anyway.
>
> ......Andrew
>
Learn to hand grind tools! At low HP a carbide insert will just work harden 316
SS. You can hand grind a 3/8" bit in 45 seconds, a little longer with higher
cobalt percentage. I have used both carbide inserts and carbide on a stick as well
as high speed steel bits and I'd say that on single phase lower powered machines
you will do better with High speed steel.
I have cut .5 " a side ( 1" on diameter ) on a 8 " roller at 350 RPM, .015
feed with carbide, just mild steel true, but spectacular very hot blue chips
coming off like pop corn. As I remember that setup wouldn't cut under .005 " on
aside, the carbide needed to "dig in" to work. I switched to HSS for the finish
cuts. You just can't make carbide inserts real sharp, it is too brittle.
John; What kind of welding equipment are you using?
>
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