Making a latex mould

After explaining how to create surfaces, I would like to show the making of your own inexpensive moulds.
This involves a so-called “latex mould”. This can be made in an ultra short time.

The basis for such a mould is a master model which is engraved with a lasercutter in an ABS plate.
The record I’ve used so far, has a stone motif in “stretcher bond”.
In British architecture also other brickwork bonds are used.
The most important are:


A. Stretcher bond
B. Flamish bond
C. English bond

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Nobody likes counting.
Especially if you have to make a lot of scale calculations.

In the drawing above of a Kentish Oasthouse I’m developing now, I know only one size.
The height of the cellar is 2700mm. From this measurement I have to calculate every other length.

To make life a bit easier, I made a conversion-to-scale tool.
You can calculate any length from “Real” to 1:87 (3,5mm scale) or to 1:76,2 (4mm scale).
And backwards. When you like it, download it for free.


Single tunnel portal


For a double tunnel portal between the bridge and Wateringbury Railway Sation is no space.
The distance between the tracks is, after all, larger than 50mm. I therefore need two single portals .

Coincidentally, at the EMV there was a mould for a single tunnel portal.
To make a latex mould maker it’s much easier than to make a silicone mould; and is much cheaper.
You can make the same surfaces as with a silicone mould, but the latex mould is less
deep. The casting will be thinner than 1mm.

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Tunnel portal

Class, N15 King Arthur Class were the main express engines of the Southern Railway, designed by Maunsell and secondary only to the more powerful Lord Nelsons until usurped by the Bulleid designed pacifics.
Via the Southern E-Group I received a few clips of 30777 ‘Sir Lamiel’ hard at work in 2010.


(Click on the photo above to start the film)

On the photo you se a train just passing an tunnel. The portal is made of sand grey brick, with a red coloured bow. I thought a good opportunity for my experiments with constructions and separate surfaces.

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Constructions and surfaces

With the drawings, photographs , dimensions and technical descriptions I have collected in the last months, I can build realistic buildings and structures on my layout. For this purpose, I create first CAD drawings for building constructions and second for separated surfaces (‘wallpaper ‘). For the technical building constructions, I use solid hard materials as plywood, MDF, ABS, Acrylic, PET and cardboard. And for the surfaces, I will work with hard and soft moulds and/or clays.


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Building plans

It’s nice to see how quick I get response from users of e.g. the RMweb, the Southern E-Group, and/or Wateringbury Remembered with comments and resource material. So from Ian Maccormac I received copies of articles of the MRC from 1985.


The Chatham & District Model Railway Club build Wateringbury in the 1980’s when Ian lived in Chatham in Kent. His material is very useful. Now I have detaillied building plans of the main building, the goods shed, the shelter and the signal post.

Thanks a lot Ian.