[PSUBS-MAILIST] O-ring groove machining

Alan via Personal_Submersibles personal_submersibles at psubs.org
Fri Feb 24 20:52:49 EST 2017


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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