3mm Society, Beer, Railway, Railway days

3mm London Area Group

Another very informative meeting, this time on the pros and cons of chassis building.

I gave the sorry tale of my Terrier chassis – determined to get it to work!

Tony Briddon brought along his competition winning Duchess which runs as good as it looks.

We also had a SE&CR O running (13.5 but able to go round the 14.2 test track).

Andrew Barnes brought along some of his lovely coaches

And for good measure a scratchbuilt SE&CR class C 0-6-0 which did quite a few circuits!

There was an example of an 0-6-0 chassis

And then Group discussion

All finished off with a couple of pints in the Parcel Yard – a good end to the day 😊

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3mm Society, Railway, Railway days

3mm London Area Group meeting

Yesterday’s meet at Keen House covered resin casting with our very own Andrew Shillito demonstrating how to cast in resin with moulds he had brought with him. Wim Harthoorn provided the talk and gave example of the resin stuff he has produced for his Thailand 🇹🇭 railway which is 3mm scale on 9mm track and dcc to boot.

All in all a very enjoyable afternoon rounded off by a couple of pints 🍺 in the Parcel Yard at Kings X.

Photos above: members gathered round Andrew looking at him demo and then coaches produced by member Andrew Barnes (utility van and Crimson & Cream coaches produced by using resin method – plasticard formers and the Isle of Wight stock produced with layered plasticard using a method pioneered by Bernard Holland sometime ago)

Pictures above: Thai diesel produced using resin casting.

3mm Society

From a London member

3mm London area group

Fourteen members gathered on Saturday 6 September for the third meeting of the ‘informal’ London Area Group at the Model Railway Club’s Keen House HQ. Wim Harthoorn was unable to join us this time, but Steve Driscoll was present, and introduced two informative and appreciated talks, by Andrew Shillito on locomotive chassis building and by Phil Smith on 3-D printing.

Andrew led us through the process considering both pre-formed frames and scratch-building, and gave a clear explanation of each stage, with useful tips that made it all sound very simple! Those of us who have yet to tackle a chassis will have the chance to find out for ourselves, as Andrew offered to host a ‘hands-on’ session at a future date. Whether or not to compensate the driving wheels was discussed, his view being that this – like several other issues, such as whether to use a flywheel – was largely a matter for personal choice. A rigid wheelbase, pivoting beams and sprung hornblocks can all give good results with care, while Andrew described his use of pivoting sub-frames holding the axles and set inside the main frames, in which slightly oversize holes allow the wheels the necessary freedom of movement. His practice of gluing a motor to the chassis, rather than bolting or screwing, appears to work well, using a five-minute epoxy.
Philip Smith reminded us that Wim Harthoorn has set up a Society working group to look at potential applications of 3-D printing, particularly its possible use in creating a ready-to-run chassis. While the process is already being rapidly developed for industrial uses, its application for railway modelling has some way to go before it becomes a proven technique. In particular, the ‘printing’ is actually achieved by depositing thin layers of material one above the other, and this can leave conspicuous striations at layer junctions. These can to some extent be smoothed away at extra cost, but complex shapes such as loco chimneys and domes are proving tricky to generate successfully – and describing the required shape to be formed, held as a ‘pattern’ in the computer for the printing process, is also laborious. Superglue appears able to bond printed parts together, and to other materials. As with etching, it is always worth talking to a company specialising in 3-D printing before going too far with a project. PD Models and Shapeways were noted as two helpful firms.
The next LAG meeting would be arranged for mid-February. Before then, we were encouraged to support the Model Railway Club’s Open Day on Sunday 16 November, in which the Society is taking part.

3mm Society

3mm Society – launch of London Area Group

This Saturday sees the launch of the London Area Group of the 3mm Society.

We are looking forward to meeting members of the society who live in the London area. This will be the opputunity to meet other like minded 3mm modellers and there will also be a 12mm test track available.

If you are interested in finding out more drop me a line by email threemmsec@btopenworld.com

I look forward to hearing from you.