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LMS D2023 42ft Luggage and Parcels Van
New Release 3D Print 4 Yourself series.

Thanks to member "Traininvain" (Ian H) for providing a dimensioned drawing of the LMS coach buffer. I have amended the OpenScad file and am releasing the STL files. The test build model is in the paintshop at present but photos will follow later in the week.

This model is of LMS D2023 , of which ten were built in 1938, being similar to D1870 in appearance but with a raised roof (officially described as, "Luggage & Parcels Van suitable for Aeroplane Traffic"). Such vehicles were more usually classified "CCT"  (covered combination truck) but these were "posh" Stanier flush-sided vehicles, finished in full passenger livery for use in express trains!

In addition to their more usual use as vehicle and general luggage vans, the additional height provided the ability to accommodate aircraft fuselage components, a design consideration in view of the onset of re-armament, in anticipation of WW2.

When compared with D1870, apart from the increase in roof height, there were vent hoods over the doors (the raised roof left no clearance for roof vents) and modifications to the design of the end loading doors.  Unlike D1870, they were not fitted with electric lighting  and the underframes were welded, so the numerous solebar rivets of the earlier builds can be omitted. These modifications reduced the tare by two tons (from 24 tons of D1870, down to 22 tons).

To complete, you will need LMS 9ft welded bogies (I modified Walsall Model Industries castings which are supplied with rivet detail) buffer heads (large round with top edges clipped to clear the drop flap), Slaters' coach wheels and screw link couplings.

Note on buffers : To fit the printed buffer guides, the heads require a main shaft diameter of 4mm plus the tail shaft of 3mm diameter).

The underframe (same basic design as fitted to D1870) has a rather unusual arrangement of the twin vacuum cylinders : Both are on same side of the longitudinal centre line and offset from lateral centre line. The more usual diagonal arrangement would have placed the second cylinder in the space occupied by battery boxes on D1870.

LMS livery followed the 1934 paint specification for passenger carriages of crimson lake with simplified lining in chrome yellow and black and with black ends. The steel roof was painted a silver colour (I use Tamiya XF-16 "flat aluminium"). Numbers were 44306 - 44315.
BR livery would have been red (1950 to 55 and some were lined) or maroon (from 1956) with a grey roof.
They were withdrawn between Nov. 1965 and Nov. 1967 and, so far as is known, none received BR blue livery.

Construction Notes:
1) Detailed drawings of the underframe layout (which includes the electric lighting fittings for D1870, which should be omitted for D2023) can be found in "Historic Carriage Drawings" Vol.3 also in "Railway Modeller" for July 1964. "LMS Standard Coaching Stock" Vol.1 contains photos and a basic drawing of D2023.

2) The sides are in four sections so as to fit standard size printers and the joints coincide with visible seams on the prototype (two at door edges and the third on centre line).

3) The side prints are overlays onto ply backing for which SVG files are provided for laser cutting. The lamination consists of two layers of ply (3mm + 4mm)  with the layout designed so as to be staggered betwen the printed joins for maximum rigidity. The triple section side of the ply laminate is that to which the prints are glued (otherwise the ply joint would coincide with the centre line joint on the printed overlay). Locations of the grab rail and door handles are pierced through the sides but will need to be opened up to take the fittings.

4) The roof is printed in three identical sections but does not include the external "ribs" of the Stanier pattern steel roof and they need to be added with strips of plastic card. The open ends fit over the carriage ends and a separate internal roof hoop is printed and fitted to the open end of the inner section, to mate with the closed end of the adjacent section (this file is named "roof hoop wide"). The "roof hoop narrow" file is desgned to fit inside the roof sections at regular intervals as reinforcement and to provide additional anchorage points when fixing roof to the carriage sides.

5) There is a separate ZIP file containing templates for laser cutting the plywood parts for sides and floor (they can also be used to print paper templates for manual cutting). The bogie centres are marked by 4mm diameter cutouts from the floor.

6) Adhesives : I use "Wickes Weatherproof Wood Adhesive"  for laminating the plywood and Evo-Stik 528 for fixing prints to the ply. For everything else I used "No Nonsense Mitre Kit" (an industrial strength superglue with aerosol spray activator, available from Screwfix).

As with other rolling stock in this series, the file downloads are available to G3 Society members upon application as below.
Access will be granted by sending message using this forum's message system to John Candy (subject line to be "STL access request by <your G3S membership number>") , whereupon a password will be sent with a download link . Remember to check that the email address you have linked to the forum is still valid!

Next release will be the GWR P16 (outside-framed) "Monster" 50ft scenery van, followed by the SR Maunsell 51ft 10T bogie luggage van.
The next release in the 3D-Print-4-Yourself series will be the LMS 42ft CCT D2023.

The body and solebars have been successfully test printed and I am now working on the underframe details.
I am attaching screenshots of the buffer I have prepared  (they were fitted with standard Stanier pattern coach buffers) together with photos of the test print in situ on a van end.

I did not have a detailed drawing of the buffer to work from (only a general underframe drawing and some photos) but I think it looks right. I have not simulated the surface of the treadplate since I normally use etched brass overlay for the chequer plate effect.

Does it look right to you .... or do you, perhaps, have a dimensioned drawing of this buffer type?

LMS coach buffer1.pngLMS coach buffer2.pngLMS coach buffer3.pngbuff2.jpgbuff3.jpg

A few photos of the assembled and painted bogie van showing differences between the LNER period model (note the reinforced ends) and the GCR period condition.
The bodies of these vans were mounted on wooden blocks which spaced them from the steel underframe, to the extent that daylight was visible in photos. This can be seen replicated in the three-quarter view of the LNER model.

Vacuum pipes still to be fitted and buffers should be oval but round heads fitted as temporary measure.

Has anyone here ever turned oval buffer heads?
I may have to resort to fabricating oval overlays to be soldered on.

Metropolitan Railway E Class Loco.



This rather handsome engine deserves representation in G3.

The frames of the E Class are made form 1.5mm steel with axles running in brass hornblocks and beam compensation.

The wheels were machined from 8mm ally plate with a square slot for quartering and the springs were engraved from 6mm ally.


Looks an absolute bargain at current price 900GBP

UPDATE: Still at 900GBP with 1 day to go.
I am surprised nobody has bid for this live steam example .... GRS are asking 1600 for for a secondhand battery powered example.
I happen to know the owner of this model and it is as good as it looks ... he has only ever test run it on a rolling road since it was given a professional overhaul and repaint.
An excellent model John, great detail you must be very pleased with it.


Here is the GCR 18ft 10 ton fish van, to complement the Great Central 45 foot bogie fish van , now available as part of the 3D Print 4 Yourself series .

There are variations between batches of vans built over a long period and subjected to modifications (particularly axleboxes and brake lever arrangements).

My model (detailed from a LNER period photo) has replacement RCH axleboxes (GCR type are included in the STL files) and "lifting link" brake lever on one side.  The earliest batches were built by contractors (Pickering and Cravens 1904/5) and had  "same end" brake levers which were required to be altered under later BoT regulations (1910) and the lifting link was the method used for conversion. Later Lots (1913 onwards) were built with the lifting link arrangement.

12 were still "on the books" on the eve of nationalisation (31/12/47).

To complete you will require Slater's open spoke wagon wheels, Slater's or Williams Models buffer heads and screw couplings. I used Walsall Model Industries compensation for the running gear.

Livery notes :
GCR : Standard GCR freight livery of dark grey with white lettering.
LNER : Being AVB-fitted freight vehicles, they carried the standard red oxide/bauxite livery with white lettering. Some were fitted with cast iron "FISH" plates as on my model of 511528.

The 4th photo shows the "lifting link" arrangement common on GCR AVB-fitted wagons, particularly those originally designed/built with same end brake levers. Vacuum brake pipes have still to be fitted to ends.


Locomotives (steam outline) / Re: G3 Project Loco
Last post by Doddy - Jun 30 2024 08:22
  • Build Two Models
  • Add a Generous Weathering Pack to each
  • Model Three Bridges c.1964
Locomotives (steam outline) / G3 Project Loco
Last post by 753 - Jun 29 2024 09:31


Further to the G3 Project Adams 0-6-0 G6, we can now offer an Adams 0-4-4 O2 kit. 

Adams designed a variation 0-4-4 O2 to run on tighter curves. The O2 shares the same body as the G6 but with a different chassis.

The kit will be the same format as the G6 all components included except motor, batteries and R/C

Members who are interested in buying a kit please contact here.




The Great Central 45 foot bogie fish van STL files are now available as part of the 3D Print 4 Yourself series.

Body: The two test models were built around a laser cut plywood carcass. The printed parts were attached with a contact adhesive (I used Evostik).

Two different ends are supplied ; the original (as built) and the later modification with diagonal braces. Photos of these vehicles in service are almost as rare as hens' teeth but those in LNER period photos carry the modification.

Underframe : These 3D printed parts have been designed specifically for use with the laser cut steel underframe and bogie kit available from Williams Models.

In Service : Although designed for fish traffic, they appear to have been of limited use, a result of the practice of allocating individual fish vans to a single merchant. Very few merchants had the requirement for a 15 ton load and the vans saw use for pigeon and parcels traffic.

Livery notes :

GCR : The BRC&W-built 1903 vans (louvred) were delivered to the GCR in a varnished timber finish with lining. In this form they appeared in the publicity photos produced by the GCR.
This livery is said to have been very short-lived with the vans being repainted into the standard GCR freight livery of dark grey with white lettering. The later 1910 (GCR Gorton-built) vans with slatted sides were turned out in the grey freight livery from new.

LNER : Being AVB-fitted freight vehicles, they carried the standard bauxite/brown livery with white lettering.
The underframes were always finished in black (including solebars and headstocks which were steel) .

Attached photos show the GCR-liveried body and separate steel underframe with added 3D printed detailing. The dark body colour made it very difficult to photograph indoors (it also needs a matt varnish coat) but I will take some better shots when the sun shines (also of the LNER version in the bauxite livery).

Detailing parts for the basic steel underframe are included in the STL package (including brake parts, queenposts, etc.).

See http://g3forum.org.uk/index.php?topic=3145.0 for further details and how to access the files.

DSCN6327.JPG DSCN6325.jpg DSCN6315.jpgDSCN6316.jpgDSCN6319.jpgDSCN6317.jpgDSCN6321.jpg