Small brass turning

[Ian SilverParticipant @iansilver78430]

Hi all,

I need to make copies of a small brass knob (approx, 30 x 18)

This is for an antique Ashwells toilet lock

Any advice greatly appreciated

Thanks in advance

Ian.

[Ian SilverParticipant @iansilver78430]

I need to make copies of a small brass knob (approx, 30 x 18)

[roy entwistleParticipant @royentwistle24699]

Ian I don't know what equipment you have or how much experience but I would turn it by hand using a graver on a hand rest I can't think of an easier way but no doubt others will

Roy

[Gary WoodingParticipant @garywooding25363]

A picture would help.

[Ian S CParticipant @iansc]

Ian, as above.

Out of interest I had a look on Google, 1st site 2000 pounds, next few sites(E-Bay etc) 25 to 50 pounds, the last one I looked at was here in NZ wait for it—————–$NZ 2 . 13.

I presume yours is not the penny in the slot type.

Ian S C

[Ian SilverParticipant @iansilver78430]

Some pictures uploaded

[John HaineParticipant @johnhaine32865]

I'd cnc them myself.

Did you buy that Rabone rule recently? I have always wanted a rule with that style of calibration since I read about it being developed at NPL for better legibility in New Scientist when I was at school, and that was 50 years ago!

[Roderick JenkinsParticipant @roderickjenkins93242]

Ian,

I'd use a mixture of conventional topslide tool and parting tool to turn the major diameters and then switch to the George Thomas quick action hand rest to fill in the curves with a hand graver. The GHT graver design is reversible in its handle – one end is ground to a diamond point for convex surfaces and the other end is semi-circular for concave surfaces.

Like I used on this spinner nut:

HTH,

Rod

[Ian SilverParticipant @iansilver78430]

Thanks for the advice everyone. I should have made my original post a bit clearer – I need someone to make them for me (I don't have a lathe and have never studies metalwork – I'm a carpenter)

So, any volunteers out there?

Cheers,

Ian.

[Neil WyattModerator @neilwyatt]

Ian's bolt;

Neil

[Clive HartlandParticipant @clivehartland94829]

To me that looks like a brass knob turned with a hole down the center and a rivet to fix it to the slider? Maybe a lot easier to make and fix. It would have been slammed back and forth quite hard!

Clive

[Ian SilverParticipant @iansilver78430]

No, it's threaded and screws into the sliding bar

[IanTParticipant @iant]

Neat looking lock though…

IanT

[julian atkinsParticipant @julianatkins58923]

hi ian,

happy to help and very handy with a gravel as advised by roy!

pm me?

cheers,

julian

[Neil WyattModerator @neilwyatt]

Presumably the gear turns an indicator on the other side of the door?

Neil

[Ian SilverParticipant @iansilver78430]

Yes, it has a brass bezel on the outside of the door with vacant/engaged on an enamel sign

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