Lasering the Model Armstrong Cannon
This is the Queen Victoria emblem and motto on the original cannon at Port Fairy, Victoria.
And this is what is now lasered onto the model cannon..
It was made with a 30 watt fibre laser, driven by its owner, Stuart Tankard. It took about 30 minutes, 200 passes. Shows up my substandard turning.
I have some videos of the process, and I will make them available after some editing.
This was incredibly exciting. The model cannon requires more polishing, and colouring with a gun blacking chemical.
We also engraved the cannon weight, sight marks, and year of manufacture on the trunnions. I will post those photos when available.
Hello John, More superb attention to detail.
Which steel colouring process are you planning? Be wary, hot blue methods use very alkaline solutions that will dissolve copper also variable section thicknesses will produce variable shades and colours.
In my experience cold rust browning then boiling to covert to ferric oxide is best for variable section thicknesses and was the original process used. I can give you details if you are interested.
Hi Robert, and thanks. Nothing definite yet about steel colouring, and my knowledge on the subject is minimal. So I would appreciate any advice and information. Gun blueing solution was one option. John