Having
already built the only available 1/35 kit of the Sd.Ah 56/57 Flak ammo trailer
made by Wiener Modellbau, a new 3D printed version is now available. The WM resin kit is a
nice little kit and builds up well, but it is pretty basic in certain areas and lacks a lot
of detail. The new printed version has been designed by modeller Darius
Stucinskas and is available to download from: https://cults3d.com/en/3d-model/various/1-35-scale-sd-ah-56-57-ammunition-trailer
The
single axle 1.5T trailer was used to carry ammunition for self-propelled Flak
guns and were typically towed by late war vehicles such as the Sd.Kfz 7/2,
Mercedes 4500 and Bussing NAG 4500. http://www.kfzderwehrmacht.de/Homepage_english/Trailers/Special_trailers/Sd__Ah__56-57/sd__ah__56-57.html
Apart
from the obvious careful removal of support material and the clean-up of the
little nubs where they attach to the parts there is no other clean up required.
The detail in the printing is difficult to see in the beige-coloured resin so
any imperfections are only going to show up after a light coat of primer. It is
advisable therefore to primer the larger panels before any small fragile parts
are attached. This way any issues can be addressed whilst still possible.
The front and rear support legs are engineed to be moveable if you wish and the suspension and axle bolt to the chassis as per the real
thing. With care it is also possible to make the handbrake workable. The only
additional material required is some 0.3mm copper wire.
A selection of tread
patterns are available for the tyres and a wooden 'roof rack' can be added. Two optional rear chassis profiles are included both with their own support leg design. The sliding interior portioning grills are
intricately designed and along with all the separately printed retaining hoops,
clasps, wingnuts, and padlocks, make for an incredibly details model.
Constructions starts off with the axle
chassis and suspension. The main chassis is printed
in one piece but here you can choose from two rear braces with their own individual support leg designs. The
legs are workable and can be positioned up or down.
The front support leg can be built to be
moveable using the small bolts available and will slide up and down. It is
advisable to open the existing holes with micro drills to achieve a better
fitment of the bolts as the printing process does flatten the exit holes a little.
The handbrake can also be built to be moveable
using additional 0.3mm wire but care is required as the parts
are very thin. Tiny pins and bolts are employed to achieve moving parts should
you wish to.
A selection of tread
patterns is available as are wheel designs so if you want to represent a particular
vehicle it might be worth contacting the designer to request a particular wheel or
tyre design.
The body is built up from a floor, four sides, a roof and a centrally located support bar. Care is needed to align these tightly noting the slight floor design
cut-out at the front which sits on the angled chassis frame. My kit came with the curved roof
design although later variants can be seen with flat roofs and door designs
with less hinges.
Any interior cargo and ammo will need to be attached before the roof is glued down.
Ammunition containers for Flak 36/37, 38 and
43 are available and these are printed open and closed along with the shell
trays ready for firing. The shells are also available on the trays, separate
and as spent casings, so all possibilities are catered for.
The sliding dividing grills are incredibly fragile,
so special care is required removing the supports. These were employed to
prevent the load sliding forwards are backwards in transit. Typically, the ammo
containers were placed over the axle with additional equipment and crew gear at
either end. Access was available from two doors either side and from doors front and rear.
A wooden sided roof rack is also available
and gives additional storage. I plan to add more load items to this area.
I decided to model my trailer with both doors
open on one side and with the rear door open. To avoid using all the 3D printed
ammo boxes, plastic stock was used to bulk out the hidden boxes on the
floor. Any areas that were visible through open doors was also covered
with ammo boxes or additional equipment. Loose ammo boxes and crew paraphernalia
will be kept separate to aid painting.
The last parts to add will be the very small
locker door wingnut catches, hoops for the door clasps, and the padlocks and chains. I
fear that some of these parts are so well represented in scale to be virtually
impossible to remove from the supports without damage, but I will endeavour to
salvage what I can.
Build complete with additional roof box accessories ready for paint
This build
was going to replace a resin Wiener Sd.Ah 56 trailer currently displayed with my
Sd.Kfz 7 Flak 43 sitting on a windy Italian mountain round. The paint
scheme is in plain Dunkelgelb so the trailer will
receive the same monochrome finish.
I had a few ready mixed shades of Tamiya dark yellow and
levelling thinner left, so I used these for shadow areas underneath the trailer
and on the lower panels. The final coat is with Mission Models Late 1944 RAL
7028. This to my wonky eyes is one of the more accurate in scale appearance
dark yellows. My Sd.Kfz 7 Flak 43 is highlighted in this and I recall adding a
drop of Tamiya clear yellow to a subsequent varnish coat to get a more
harmonised effect. This will receive the same treatment.
The attached roof box accessories colours were blocked in
with Vallejo acrylics and the same manufacturers Iraqi sand was used to give
pronounced areas a highlight which always works well with proceeding pin washes
and post shading steps. All the 3D printed ammo containers and added
accessories were painted at the same time. The ammo boxes deliberately finished
in a shinier yellow hue to give them some contrast.
The final base coat layers were carried out was a fine
misting of lightened and darkened MM Dunkelgelb through a stencil mask to the
larger panels. This gives a worn patina finish I like to use which starts off
the weathering stage.