Images representing different hobbies

Model Engineering

Ever since I was a boy, I was in awe of the working mechanical models to be seen in the pages of Model Engineer magazine or on television programmes like Bob Symes' Model World. In 1999 I managed to acquire both a daughter and a lathe, and against all the odds started my journey in model engineering.

You can buy my books including the Mini-Lathe, Norden: Building a Victoirian Steam Engine and The Home Workshop Dictionary using the links below:

Hardback and Paperback Books

 

                 

Ebooks and Kindle

                               

These change wheel tables apply to all Mini Lathes with:

  • Metric 1.5mm pitch leadscrew
  • Imperial 16TPI leadscrew

They also cover some slightly larger lathes with Metric 2mm pitch leadcrews sometimes referred to as 'mini lathes' but fo different design, including the SIEG SC4.

The tables cover most Metric, Imperial and BA threads.

Always do a check before cutting metal, as there is always a possibility of errors.

Download Mini Lathe Cahnge Wheel Tables Here

 

For the ultimate change gear experience, check out Brian Wood's book:

 

 

Fans of cult Canadian science fiction movie 'The Cube' can now live out the experience of escaping from a three-dimensional maze in their own living rooms!

Cube

This Cube is a 27 'room' maze with a 15mm ball bearing trapped inside. The' exits' are on opposite faces, one in a corner, the other in the middle so you can tell which is which. How long will it take you to move the ball from one exit to the other? Of course the catch is that the ball is permanently trapped, dropped in during the print process.

You can download the STL file of the cube and print your own.

As a 'clue' here's what the Cube looks like inside, credit to Moduleworks' free, simple and really handy STLview program.

Inside Cube

The example Cube was printed using the 'standard' setting of a Dremel 3D40 Idea Builder printer. Advice for printing your own is:

  • Don't use any supports - they will block the maze!
  • Make sure your printer settings can cope with bridges up to about 17mm long, this should be OK on most printers if you have the right settings.
  • Ideally use a 15mm ball bearing or a marble. One down to 1/2" or 13mm should not to come out of the holes, but any much larger than 15mm may get jammed. That said, bigger ball bearings make a more satisfying clunk as they move around the maze.
  • You can use a smaller ball bearing, but it won't remain trapped inside, which is half the fun of the object - something you can't take apart without destroying it!
  • The best time to put the bearing in the print is while the second or third layer is being built - pause the print and drop the ball through any hole that links to the layer below out of the way of the print head. If you can't pause then you will have to judge a moment when the print head is occupied elsewhere!
  • If you use a solid colour rather than a translucent one, the cube will be even harder to solve!

Finally if you print your own Cube, please post a pic online and share this page!

Well not quite golden... this one is mostly brass witha bit of anodised aluminium. lightly antiqued and sprayed in celulose laquer to keep it shiny.

The snitch is the crucial element of the game Quidditch in the Harry Potter books and movie, but also plays a critical role at the end of the series 'I Open at the Close'.

The feather/wings are sheet brass, etched both sides with a freehand feather texture and a silver soldered 'stalk'. The base is from a long-gone 'executive toy' abacus!

Full size golden snitch model

 

Another view of the full size snitch model

I'll confess, this is pure vanity! These are covers of Model Engineer and Model Engineers' Workshop that have featured one of my models or tools as the central theme.

To my mind they give me comfort that I may be a proper model engineer after all!

 

Norden vertical mill engine

 

Norden, a vertical mill engine in 1:12 scale.

 

Southam

 

Southam, Hudswell Clarke diesel shunter number D604 in 3 1/2" gauge.

Handwheel Dial

 

Parts for a  lathe saddle handwheel dial to Graham Meek's design.

Compact Dividing Head

 

A Miniature dividing head made using parts from a 'Westbury' dividing attachment.

Southam is my 3 1/2" gauge model of a Hudswell Clarke shunter, D604, which operated for many years at a cement works in Warwickshire.

Many model engineers dream of travelling along a model railway behind a locomotive of their own making. Sadly the cost, time and complexity of even a 3 1/2 inch gauge steam locomotive can be enough to deter many beginners. My solution to this was Southam, an inexpensive but characterful diesel outline electric locomotive in 3 ½” gauge that is currently being serialised in Model Engineer.

Most designs for such small diesel models are functional and follow rather boxy prototypes. This model is based on one of Hudswell Clarke’s early designs, these were made to resemble their steam powered products and have plenty of character and detail. Construction took about six months.

I used LBSC’s classic design for a contractor’s locomotive, Tich, as a reference point. If I could match the power and adhesive weight of this live-steam 3 1/2 inch gauge 0-4-0 in my electric 0-4-0, then it should have a comparable performance. In the end I managed to achieve this specification - the all up weight is about 25lbs (12kg) compared to about 20lbs for Tich and, with the motor I used, the power available, 80 watts, is about the same or perhaps rather more – the limiting factor for Southam is the available traction as it will always slip rather than stall. Like Tich, the design is simple and straightforward and can be finished to any level of detail the builder desires in the knowledge that it will comfortably pull a hefty adult (I’m 6 foot two inches and about 14 stone) around most tracks.

I wasn't happy with it's gaudy 'factory' finish, which I decided isn’t ideal for a working shunter that spent its life in a cement works, so I went to work with your dust and rust paints, using an Arism compressor and Sparmax airbrush all from www.airbrushes.com. A bit of research soon showed that the radiator grill at the front is a prime target for cement dust!

Southam Weathered 5

Southam won a Highly Commended Certificate at the 2016 Model Engineer Exhibition in this guise.

 

Southam Weathered 6

Southam was serialised in Model Engineer Magazine from mid-2016 to mid-2017.

The issues are: ME: 4539, 4541, 4543, 4545, 4547, 4549, 4551, 4553, 4555, 4557, 4561, 4568.

 

Southam running on the Nottingham SME track

Southam

 Southam on the cover of Model Engineer Magazine