I need to make copies of a small brass knob (approx, 30 x 18)
Ian Silver | 25/10/2014 17:37:04 |
8 forum posts 5 photos | 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. |
roy entwistle | 25/10/2014 19:37:14 |
1716 forum posts | 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 Wooding | 26/10/2014 09:47:28 |
1074 forum posts 290 photos | A picture would help. |
Ian S C | 26/10/2014 10:09:37 |
![]() 7468 forum posts 230 photos | 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 Silver | 26/10/2014 12:55:10 |
8 forum posts 5 photos | Some pictures uploaded |
John Haine | 26/10/2014 13:04:31 |
5563 forum posts 322 photos | 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 Jenkins | 26/10/2014 14:48:46 |
![]() 2376 forum posts 800 photos | 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 Silver | 26/10/2014 15:06:13 |
8 forum posts 5 photos | 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 Wyatt | 26/10/2014 18:34:26 |
![]() 19226 forum posts 749 photos 86 articles | Ian's bolt; Neil |
Clive Hartland | 26/10/2014 20:42:04 |
![]() 2929 forum posts 41 photos | 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 Silver | 26/10/2014 22:01:09 |
8 forum posts 5 photos | No, it's threaded and screws into the sliding bar |
IanT | 26/10/2014 22:20:26 |
2147 forum posts 222 photos | Neat looking lock though... IanT |
julian atkins | 26/10/2014 23:54:24 |
![]() 1285 forum posts 353 photos | hi ian, happy to help and very handy with a gravel as advised by roy! pm me? cheers, julian |
Neil Wyatt | 27/10/2014 09:32:26 |
![]() 19226 forum posts 749 photos 86 articles | Presumably the gear turns an indicator on the other side of the door? Neil |
Ian Silver | 28/10/2014 10:15:33 |
8 forum posts 5 photos | Yes, it has a brass bezel on the outside of the door with vacant/engaged on an enamel sign |
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