[PSUBS-MAILIST] Cutting circlip grooves

Wed Oct 14 15:46:16 EDT 2015

Brian,

Those guys are robbers.  Alan has his machines, it is experience of 30 years machining he is missing.

Hugh

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of Brian Cox via Personal_Submersibles
Sent: Thursday, 15 October 2015 3:59 a.m.
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] Cutting circlip grooves

Alan,

                  What about these guys?

http://www.machine.co.nz/lathes-milling-machines-and-machine-tools-WB

Brian

--- personal_submersibles at psubs.org wrote:

From: Alan James via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] Cutting circlip grooves
Date: Wed, 14 Oct 2015 03:05:49 +0000 (UTC)

Brian,

no we don't have industrial areas in N.Z. , just grass with sheep & cows :)

   I have a lathe & mill, but these grooves are particularly small & in stainless,

so wanted a bit of advice before I attacked them.

Cheers Alan

  _____  

From: Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Wednesday, October 14, 2015 3:36 PM
Subject: Re: [PSUBS-MAILIST] Cutting circlip grooves

Alan,   Can't you go down to an industrial area of New Zealand and pick up some equipment , like laths and mills?

Brian

--- personal_submersibles at psubs.org wrote:

From: Alan James via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] Cutting circlip grooves
Date: Tue, 13 Oct 2015 20:20:14 +0000 (UTC)

Thanks Hank & Emile.

That's a brilliant idea Hank. I have found a couple of diamond blades for a dremmel drill

that are thinner than my smallest groove; & standard dremmel disks that will do for the

larger of the two grooves. 

Am working on my brushless thruster & replacing the motors shaft with stainless, & extending &

machining it to fit my propeller.

Cheers Alan

  From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Tuesday, October 13, 2015 11:58 PM
Subject: Re: [PSUBS-MAILIST] Cutting circlip grooves

Alan,

If you have a parting tool, you can grind it to the thickness that you need, but wow that is thin. You will need to buy a grinding stone and a bench grinder for sharpening, if you haven't already.  You need a special stone for the harness of the cutters.   Your grinding disk idea is not bad, just take the disk and run a bolt and nut through the centre of the disk to hold it.  Then clamp the bolt in your tool holder, spin the lathe as fast as it will go and slowly push the disk into the shaft.  This is certainly not a standard idea, but us rookie machinists have creative licence to do  this.  :-)

Hank

On Tuesday, October 13, 2015 1:10 AM, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Hi, 

I need to cut a few external circlip grooves in stainless 316 rod.

One is 1.1mm wide (3/64") & the other .7mm (1/32") wide. The shaft is 10mm & 8mm diameter.

I have a lathe tool that fits tungsten inserts & am wondering that IF I can get an insert

the right width, whether the tungsten would be too brittle for that.

Another option may be a dremmel drill & disk if I can set it up on the lathe carriage & if they have

grinding disks that diameter.

Any suggestions, comments appreciated.

Thanks, Alan

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