[PSUBS-MAILIST] O-ring groove machining

[Alan via Personal_Submersibles]

Thanks Hank,
haven't got one, just two modified tools for inner & outer grooves.
Both of these work poorly.
Will go shopping on Monday.
Alan

Sent from my iPad

> On 25/02/2017, at 3:33 PM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Alan,
> Try a parting tool, works for me.
> Hank
> 
> 
> On Friday, February 24, 2017 6:53 PM, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> 
> Thanks Brian & Hank,
> it was the outer egdes that I left sharp.
> It didn't cut nicely, it left a raised mound on the edge that I removed with a facing tool.
> I will either look  in to a specific groove tool or better equipment for forming the
> tool as these are taking too long :(
> Alan
> 
> Sent from my iPad
> 
> > On 25/02/2017, at 1:49 PM, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> > 
> > 
> > Don't need carbide for aluminum, did it cut nicely, aluminum likes high speed
> > 
> > brian
> > 
> > 
> > --- personal_submersibles at psubs.org wrote:
> > 
> > From: Alan via Personal_Submersibles <personal_submersibles at psubs.org>
> > To: personal_submersibles at psubs.org
> > Subject: [PSUBS-MAILIST] O-ring groove machining
> > Date: Sat, 25 Feb 2017 12:41:39 +1300
> > 
> > Am cutting some small o-ring grooves in aluminum, 3.4mm x 2mm deep for
> > a 2.5mm D o-ring. ( 10th of an inch) What is the best way to remove the sharp 
> > corners of the grove? I have read that you can spin your work in the lathe
> > & sand with 200 & then 400 grit sand paper. Is this right?
> > Have been having fun making the tool for this & don't think I have done a 
> > good job! Am I best to buy a carbide tool specific for this job.
> > Thanks, Alan
> > 
> > Sent from my iPad
> > 
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