The LBSCR settled on a standard stop-block design fairly early on in the mid-late 19th century, superseding a variety of wood-built offerings. Though Ragstone Models offer a 7mm version of this bufferstop, I am not aware of any other kit or ready-to-plonk offerings.
Upon commencing research and reading the LBSCR Modeller’s Digest Issue 0 (courtesy Brighton Circle), wherein Phil Taylor has a construction article, I found the drawings produced by John Talbot in 1975. These are perfect fodder for 3D modelling, so I embarked upon that journey to see if I could produce them for my layout Brighton Trafalgar.
The model is constructed with a number of components, shown here by their varied colours:
The model is built to real life dimensions and so can be printed in any scale and there is a parameter to adjust the gauge for non-scale track widths such as 00 or Triang-TT.
I have chosen not to model the chairs holding the rail in place, these being easily available off-the-shelf components.
The initial print was successful with no islands, but without any supports there was a splintering of the lower face of the buffer beam and the rail underneath became wavy:
The platform-end buffers at Brighton Trafalgar are to the design shown at Central Croydon, which shows them being laid in slots in the masonry of the platforms. In order that these can be represented, I produced an abbreviated version of the same design that can be inserted into holes in the embossed styrene faces, but not so long that a significant excavation is required:
Interlocking 
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