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Engineering

19th Century

Milestones in Nineteenth Century Firearms Development, Part Four

28th January 2019 Tom Pudding 3044 Comments

Introduction Every month my gun club holds a guest day when members can bring along friends and family to ‘have a go’ with their firearms. Maybe it’s because we were raised on a diet of [more…]

19th Century

Milestones in Nineteenth Century Firearms Development, Part Three

21st January 2019 Tom Pudding 3518 Comments

Introduction Although the flintlock ignition system was technically advanced for its time, it wasn’t without its shortcomings. Flintlocks require careful setting-up and constant maintenance and adjustment to be reliable. They also have a relatively slow [more…]

19th Century

Milestones in Nineteenth Century Firearms Development, Part Two

14th January 2019 Tom Pudding 4379 Comments

In my introductory article we saw that by the beginning of the 19th century the flintlock was firmly established as the state-of-the-art means of ignition in military and sporting firearms. In this article, we will [more…]

19th Century

Milestones in Nineteenth Century Firearms Development, Part One

7th January 2019 Tom Pudding 3769 Comments

Some weeks ago, and quite by chance, a friend offered to sell me a rare mid-19th century rifle, the design of which I had long found to be of interest. Although I was not at [more…]

Engineering

Making A Ruby Laser – Part Five

25th September 2018 Doc Mike Finnley 2823 Comments

Melting a hole through steel: The above image needs a little explanation! The Doc messed up his camera settings and under exposed the image. So I loaded it into Gimp and played with the curves [more…]

Engineering

Making A Ruby Laser – Part Four

11th September 2018 Doc Mike Finnley 1856 Comments

The Doc’s ruby laser focused onto a lighter flint. The flint has been glued to the end of a match stick. The ‘explosion’ measures approximately 4 inches diameter. Interesting things to note are the ‘candy [more…]

Engineering

Making A Ruby Laser – Part Three

14th August 2018 Doc Mike Finnley 2666 Comments

More information on laser speckle can be found here:  Speckle pattern A Mirror Alignment Tool The most important part of constructing a ruby laser (or any laser with external mirrors) are getting the mirrors alligned [more…]

Dr Mike Finnley, Going Postal
Engineering

Making A Ruby Laser – Part Two

31st July 2018 Doc Mike Finnley 2178 Comments

(a ruby rod lit by two bright blue LEDs. Due to the IR filter in my camera the pink colour is actually red. What you are seeing is the absorption of the blue light and the [more…]

Engineering

Making A Ruby Laser – Part One

21st July 2018 Doc Mike Finnley 1750 Comments

Introduction For many years the Doc has had the desire to attempt the construction of a ruby laser. After six months of hard work, disappointment, late nights, lots of booze and a drained bank account [more…]

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