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Circlip groove

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John Rudd:
I need to machine a circlip groove in a 3mm silver steel shaft for some circlips.

Circlips themselves are 0.6-0.7mm thick and are 2.3mm.

So to the collective, I put it to you, what’s the best way to tackle this?

I tried an abrasive disc ( my fav method.) in my Dremellookalike but the end brg is knackered so it wobbles like a jelly….I tried Stew Harts method using a slit saw….hmmmm some erroneous noises made me abandon that idea…

Silver steel doesn’t machine like EN1a sadly….so open to suggestions please….

What works for you?

Joules:
Grinding bits of Eclipse hacksaw blade, just below the teeth, if you have something that can hold it like a parting blade.  Otherwise sacrifice a small HSS drill bit in some metal stock you can hold in a toolpost. Your dodgy Dremel can part profile it, do you have diamond stones for finishing ?  Keep stick out to a minimum unless you have a pile of small drills to use.


Oh !!!  Is your silver steel part unhardened ?

John Rudd:
Steel is not hardened…

I’m thinking using a broken 1/8” centre drill suitably profiled to make the groove, sharpened on my t and c grinder..

Joules:
Sounds like a good approach to getting it sorted.

John Rudd:
Just wish the silver steel wasn’t so hard!

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