Hello Bruce, you have a P.M.

Brian

hi Bruce

used to work for negretti aviation many years ago and used a alexander engraver for dials now i use my cnc mill for engraving today made a disc for my dog he lost another one post some pics of want you need i might be able to help

Geoff

CNC engraving may not be the best way to do this, either from cost or quality as there are some interesting alternatives used by clock makers. Also, there are dedicated clock face remakers who do only this task.

Simple methods you can do yourself are; ..acid etching using an light sensitive mask frrom a drawing or photocopy of an original……..The brass workpiece is prepared and sprayed with light sensitive emulsion from a spray can,……the drawing is photocopied onto a transparent sheet (at your friendly local copy shop)……..this transparency is placed over the prepared brass and exposed to sunlight for 5 mins,….the brass is slid into a solution that dissolves the unexposed details……..the piece is then placed in the acid and the design etched……..finally black compound is used to fill the etch.

An even better modern alternative is to make up your own transparency by photo-copying the design onto special paper which cost about 80p for each A4 sheet then place in warm water and slide off onto the brass (or other) sheet.

Don't know if this would an option, but my sons company uses a UV flatbed printer to print images on small jewellers brass plates for a local stutuette manufacturer. The brass is ready laquered, and the print can be laquered as well if required. Its normally used for plastics and anodised aluminium, but they have not tried plain brass or stainless steel yet!

I was at Arborfield in 1953 waiting to go to Egypt, TEK, apparently its all gone, no doubt housing. John

CNC machines are the electro-mechanical devices that manipulate machine shop tools using computer programming inputs. Many people wonder whether the CNC machining industry grows with the times.