Model Engineer - 24 July 2017

As summer approaches, we think about days out and Roger Backhouse often has a suggestion. This time it’s the Grampian Transport Museum in Aberdeenshire. You have missed a delightful little steam gathering in the Lancashire hills, I’m afraid, but you can read about it in a short piece by Colin M. Harris. We also have a report on the recent Polly Owners’ Group meeting and rally held at Bournemouth.
If you’re confined to the workshop, there’s an attachment to make for perfect spherical turning and Peter King guides the CNC novice as he writes about techniques as you start to cut metal.
Mick Knights completes his workshop extension by fitting out the interior to suit the model engineer.
Rotary valves never really caught on in steam engines; James Wells made a model to explain the reasons why to his students and colleagues.
Stephen Wessell makes substantial progress on his ENV aero engine as he closes this installment of his occasional series and Dr. Ron Fitzgerald looks at the background to the work of Alfred De Glehn, comparing his apprenticeship in France with the typical progression of an English counterpart.
In a complete article the refurbishment of a Maxitrak Coronation is finished off with hints on painting and weathering.