CNC is only limited by our imagination.

Tweakie.CNC

Rounded Rectangle: CNC Home.
Rounded Rectangle: Construction 1.
Rounded Rectangle: Construction 2.
Rounded Rectangle: Construction 3.
Rounded Rectangle: Construction 4.
Rounded Rectangle: Construction 5.
Rounded Rectangle: Routing & Cutting.
Rounded Rectangle: Vinyl Cutting.
Rounded Rectangle: Lithophanes.
Rounded Rectangle: Engraving.
Rounded Rectangle: Making a Vinyl Cutter.
Rounded Rectangle: Soft & Hard Issues.
Rounded Rectangle: Micro Stepping.
Rounded Rectangle: Bob the Mill.
Rounded Rectangle: Making Printed Circuits.
Rounded Rectangle: Making a 4th Axis.
Rounded Rectangle: Tool Position Setting.
Rounded Rectangle: Low Power Lasers.
Rounded Rectangle: Gallery.
Rounded Rectangle: Related Links.
Rounded Rectangle: Site Map.
Rounded Rectangle: Sam.
Rounded Rectangle: Optic.
Rounded Rectangle: The X Files.
Rounded Rectangle: Bertie.
Rounded Rectangle: The Rover Jet Engine.
Rounded Rectangle: Various Projects.
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Always treat mains and high voltage electricity with the greatest respect.

You may not be able to ‘see it’, or ‘hear it’, or ‘smell it’ so don't go letting yourself ‘feel it’.

Rounded Rectangle: The New Laser Project.
Rounded Rectangle: The RF Laser.

Given to me by an extremely good friend this is the “Douglas” No.1 linear coil winder. It was manufactured in the 1930s by The Automatic Coil Winder & Electrical Equipment Co (later to become AVO Limited). It’s hard to imagine just how many coils this little machine has wound over the years but it was obviously built to last because it works just as well today as it did 80 years ago, when it was new.

A little project recently completed is this Laser tube emission timer. It utilises RF technology to detect the plasma discharge from a DC excited laser tube and then record the cumulative hours of operation.

 

Although ‘tube emission time’ can be significantly different from machine ‘on-time’ I am not convinced that the information this device provides is really useful. For example; just how long it takes to drain a tank of water depends on how wide you open the tap and the lifetime of a laser tube is no different. However, it will perhaps help with determining the used and remaining tube hours for those using a laser in a production environment.

 

Prototype No.1 is currently being tested with a production laser machine and prototype No.2 is running on a test rig 24 / 7 until it’s destruction / failure.

 

Time will tell.

Nothing to do with CNC but my Yamaha MagicStomp just stopped working, the display backlight would illuminate but that was it and as this pedal is no longer in production it was either repair it or bin it. Perhaps a compelling argument for a repair is that these pedals are now selling second-hand for around double the price they cost when they were new !

 

It transpires that in the start-up sequence the control microprocessor writes to the display and then waits for a reply. Testing the display in this manner is just fine for Medical & Aeronautical equipment but hardly necessary for an effects pedal - after all, if there is a problem with the display the software just hangs forever - still, that’s the way it is.

 

The actual display is a 16 char 2 line - cheap and readily available – tricky to replace (soldering skills required) but not rocket science. I chose to replace the original yellow / black with a high contrast blue / white display and for an hour or so quite delicate work I have an old friend back.

Here is an interesting natural science experiment / project for children and others, like me, who never grow-up. It’s something we perhaps take for granted without really thinking about it but it is always there.

 

For Millennia the basic building block for nature has been observed and extremely well documented but only in relatively recent times (since the introduction of our Hindu-Arabic numbering system) could it be expressed so easily in mathematical terms.

 

The ratio 1 : (1 + √5) / 2  is all around us and because it occurs naturally we perceive it as being ‘pleasing to the eye’ so to this end we have duplicated it in our architecture, art and just about everything else. We call it the Golden Mean.

 

It should perhaps be emphasized that this ratio it is not a law, carved in stone, because there will always be exceptions it is merely a trend but, in nature, it occurs more often than not.

 

The infinite pair of  numbers in the Fibonacci series 1,2,3,5,8,13,21,34,55,89… are again in exactly the same ratio and if we look closely at our plants, fruits, trees etc. these numbers and the ratio are there.

If you get the chance, take a look at a pineapple (from the bottom) and you will notice two helix, one clockwise and one anti-clockwise. When we count these helix (and they are both different) they match the Fibonacci series. Why ? well, when a plant arranges its leaves in this pattern it can be proven mathematically to expose each and every one of it’s leaves to the maximum sunshine / fainfall etc.

 

Getting back to the experiment / project, the attached .dxf can be used to make a very basic set of callipers whose points follow the 1 : (1 + √5) / 2   ratio so that we can measure the things around us, learn from the experience and perhaps even inspire others. I think you will be amazed at just how many things follow this rule.

Just a few pictures of my all electronic jukebox in the making. It is intended as a ‘wall hanger’ but here it is shown on it’s table stand. There is an internal, low power, 3+1 amplifier with external take-off for power amp (if required) plus the availability of Bluetooth streaming to other devices. It has a 21” touch screen and the SSD is capable of holding all of my CD collection and a whole lot more.

All the cut-outs in the birch-ply cabined were CNC routed before it was finally glued and screwed together - it did not all go entirely to plan but only I will know the mistakes. The operating software is from ZenPoint and is just ideal for touch screen operation and it’s index system allows tunes to be quickly found by title, artist, year, etc.