[PSUBS-MAILIST] Cutting circlip grooves

[hank pronk via Personal_Submersibles]

Alan,You will find that designing parts will reflect your tooling and machining skills, not to mention you lathe size.  You will be buying a larger lathe soon :-)How are you getting the old shaft out of the armature ?  Hank 


     On Tuesday, October 13, 2015 2:23 PM, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
   

 Thanks Hank & Emile.That's a brilliant idea Hank. I have found a couple of diamond blades for a dremmel drillthat are thinner than my smallest groove; & standard dremmel disks that will do for thelarger 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 insertthe 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 havegrinding disks that diameter.Any suggestions, comments appreciated.Thanks, Alan
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