Re: [gingery_machines] breaking cutter?

Have you tried taking the castings outside (away from any nice
machines) and hitting the casting with an angle grinder? I saw a tip
about doing that to iron castings in a magazine a while back and have
been meaning to try it. Just grinding off enough to let the cutter
get under the inclusions without having to start the cut in hard
stuff.

On Thu, Dec 2, 2010 at 12:32 PM, Brad Stogsdill <bstogsdill1@yahoo.com> wrote:
> Hi-
> I tend to tear up the tool steel cutter edges on my castings when turning the
> surfaces due to sand inclusions and i have noticed the surfaces seem harde
> somtimes thatn the middle I assume due to chilling rate at the surface when it
> cools? I havent really broken any cutters off but have hung up and lathe belt
> slipped and saved cutter. I leave the belt a little loose to help avoid major
> damage.
>
> I do have some carbide tip cutters and I try to use them to rough machine the
> cast surfaces then switch to the tool steel cutters to cut the clean stuff. it
> seems to save wear and tear on the tool steel cutters.
>
> Regards
> Bradley
>
>
>
>
>
>
> ________________________________
> From: Rick Sparber <rgsparber@aol.com>
> To: gingery_machines@yahoogroups.com
> Sent: Mon, November 22, 2010 7:14:02 PM
> Subject: RE: [gingery_machines] breaking cutter?
>
>
> I sure have! On one occasion I overheated the melt but decided to pour
> anyway. The casting was impossible to turn on my lathe and I ended up
> remelting it. All of my other castings were easy to machine.
>
> Rick
>
> -----Original Message-----
> From: gingery_machines@yahoogroups.com
> [mailto:gingery_machines@yahoogroups.com] On Behalf Of west_bend3
> Sent: Monday, November 22, 2010 2:31 PM
> To: gingery_machines@yahoogroups.com
> Subject: [gingery_machines] breaking cutter?
>
> does anyone have the problem of breaking lathe/mill bits in home casted
> alumminum castings?
>
> ------------------------------------
>
> Yahoo! Groups Links
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> [Non-text portions of this message have been removed]
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