The ET420 “Plochi” is designed to work in two ways: as a physical graffiti practice object and as an unpainted urban art collectible. You can use acrylic paint markers on both available sides, preserve the original monochrome presentation, or treat one side as artwork and keep the other side clean.
That flexibility is the central feature of the format. The decision is not simply whether the object can be painted—it can—but whether painting supports what you want from it. A writer may see two compact practice surfaces shaped by doors and windows. A collector may prefer the original UV-printed details. Someone interested in both can divide the two sides between painting and display.
What the ET420 “Plochi” Practice Train Is
City Series 25 is a three-dimensional practice train inspired by the ET420 and its place in German urban railway and graffiti culture. It is produced as an original CHROMATICA object rather than as a generic model with branding added afterward.
The train is approximately 20 × 10 cm and is physically 3D printed before being finished with direct UV printing. Its front and reverse sides are available as creative surfaces for acrylic paint markers. A platform-inspired display stand is included so that the object can also be presented freestanding on a desk, shelf, studio surface or in a collection.
It is useful to distinguish this format from both a paper train outline and a conventional model railway product. A paper outline gives you a flat drawing exercise. The “Plochi” gives you a physical silhouette with an existing train design, edges and manufactured surface characteristics. At the same time, no model scale is specified, and the product should not be treated as an official scale model.
The number 25 identifies its place in the CHROMATICA City Series. It does not mean that only 25 pieces exist. Unlike earlier city-focused entries in the series, this edition is not assigned to one particular German city.
What You Receive with the Train
- 1 × City Series 25 ET420 “Plochi” Practice Train
- 1 × platform-inspired display stand
Acrylic paint markers and decorative items are not included. If your main intention is to paint the object immediately, obtain suitable acrylic paint markers separately and read their instructions before starting.
The included stand is an important part of the product format, even if you intend to paint the train. It gives the finished or unpainted object a defined presentation rather than leaving it as a loose practice piece. It also means you do not have to decide between “art supply” and “collectible” at the time of purchase. The same object can move from planning and painting to shelf display.
Choosing Between Painting, Displaying and a Two-Sided Combination
Paint both sides
This is the most practice-focused approach. Two usable sides allow you to develop a pair of related pieces, compare different solutions to the same sketch or create two unrelated studies on one object.
Painting both sides makes sense when the primary value for you lies in the finished artwork rather than the untouched presentation. It is also useful when you want the train to function as a small portfolio object: one side can show controlled lettering, while the other can hold a character, throw-up or more experimental composition.
Keep the train unpainted
Leaving the object clean preserves its monochrome ET420-inspired design and UV-printed details. This option is likely to suit collectors interested in German S-Bahn culture, railway design, graffiti history or the wider City Series.
Choosing not to paint it is not a failure to use the product. Display is one of its intended uses. If you value the original presentation, do not feel obliged to add a piece simply because the surfaces are paintable.
Paint one side and preserve the other
The two-sided format provides a practical middle ground. One side can remain as supplied while the other becomes your working surface. When displayed, you can choose which version faces outward and change the orientation later.
This approach is particularly sensible if you are uncertain about permanently changing the whole object. It preserves a direct comparison between the original design and your intervention. It can also produce a coherent concept: one side represents the train as an urban object, while the other shows an artist’s response to it.
Plan both sides as one project
The sides do not have to be treated as separate canvases. You can develop a connected pair based on shared colors, repeated letter structures or two stages of one idea. Examples include:
- a sketch-style side and a more resolved version of the same piece;
- a daytime palette on one side and a darker palette on the other;
- lettering on one side and a related character on the reverse;
- two different outlines built around the same fill colors;
- a restrained side that responds to the printed details and a second side that deliberately covers more of them.
Before choosing this route, decide whether visual continuity matters when the object is viewed from different angles. If only one side will normally face outward on the stand, each design can operate independently. If the object will often be handled and turned, a shared palette may make the pair feel more deliberate.
How the Doors, Windows and Train Shape Affect Artwork Planning
A train-shaped practice surface creates decisions that do not occur on a blank rectangle. Repeated windows and doors divide the available area into sections, while the overall silhouette sets a fixed horizontal direction. These interruptions can either support the design or compete with it.
Begin by identifying the uninterrupted zones and the printed or physical details you want to retain. Do not assume that every line should be covered. A piece can pass over doors and windows, sit below them, fit between them or use their rhythm as part of the composition.
Working across the train
A long word or connected letter sequence can emphasize the horizontal body. This usually requires deciding which details may remain visible and which will become part of the artwork. The train’s divisions can create useful spacing, but they can also cut through narrow counters, outlines or character features.
If a letter needs a clean, readable interior, avoid placing its most important feature directly over a busy section unless that interruption is intentional. Move the sketch slightly left or right before painting rather than trying to repair the structure afterward.
Working in sections
Instead of spanning the full side, you can divide the train into smaller studies. One section might hold a compact throw-up, another a character and another a color or outline test. This uses the object more like a structured practice sheet.
The trade-off is visual unity. Several unrelated tests may be useful during practice but less cohesive as a displayed object. If display matters, repeat at least one element—such as an outline color, highlight treatment or shape language—across the sections.
Using existing details as guides
The UV-printed doors, windows and train details can act as compositional references. You might align a baseline with the train body, use a row of windows to establish rhythm or leave selected details open as negative space.
Inspect the actual object before committing to a sketch. Some visual boundaries may come from printing, while others may relate to the physical form. How a marker tip behaves near an edge or contour depends on the object in front of you, so plan from the real surface rather than from a screen image alone.
Ways to Use the Front and Reverse Sides Differently
Using both sides well is not only about fitting two pieces onto the object. The reverse side gives you an opportunity to make a deliberate comparison.
- Style comparison: Use the same name or word in two different lettering systems.
- Color comparison: Keep the structure consistent and change only the palette.
- Scale comparison: Create one large composition and one set of smaller studies.
- Control versus experimentation: Reserve one side for a planned piece and the other for a freer marker study.
- Lettering versus character: Let each side focus on a different skill.
- Original versus painted: Leave one side untouched as a record of the supplied design.
If you plan to paint both sides, complete your design decisions before starting the second. Handling, supporting and turning an already painted object requires care. Follow the marker manufacturer’s instructions, including any stated drying guidance, rather than assuming that a surface is ready to touch based only on appearance.
Do not treat the second side as a guaranteed correction surface. The product is intended for acrylic paint marker use, but it is not described as erasable, washable or designed for repeated repainting. A considered first pass is more appropriate than relying on removal or cleanup later.
What to Inspect Before You Start Painting
A short inspection helps separate intentional product characteristics from areas that may affect your artwork. Do this in good light and before making the first mark.
- Look at both paintable sides. Decide which side has the layout you want for your primary piece and whether the reverse will be painted or preserved.
- Identify layer lines and minor surface variations. These are normal characteristics of additive manufacturing and may not appear identically on every object.
- Study the UV-printed details. Mark out which windows, doors and other visual references you want to retain, partially cover or integrate.
- Check the edges and silhouette. Notice where your marker tip may need to change direction or where a line could run into a boundary.
- Dry-plan the composition. Hold a sketch nearby or map the placement mentally without pressing an unverified drawing tool onto the surface.
- Review your marker instructions. Use acrylic paint markers as specified by their manufacturer and prepare them away from the object if their instructions require priming or pumping the tip.
- Decide how the object will be supported. Use a stable working arrangement that does not force you to grip the area being painted.
Preparing a paint marker directly over the train can create an avoidable blob if the marker releases more paint than expected. Follow the marker’s own activation procedure on a separate suitable surface. This is a workflow precaution, not a claim about any particular marker brand.
If preserving one side is important, establish that rule before work begins. Repeatedly turning the object with wet paint or painted fingers is an easy way to mark an area you intended to keep clean.
What to Expect from a 3D-Printed and UV-Printed Surface
The train combines two production stages: the physical form is 3D printed, and visual details are added through direct UV printing. These processes contribute different qualities to the final object.
Fine layer lines and minor surface variations are normal characteristics of additive manufacturing. They are part of how a 3D-printed object is built and can make individual pieces slightly different. They should not automatically be interpreted as damage or as evidence that the object is a conventional smooth, mass-moulded model.
For an artist, these characteristics matter because the surface is not simply a sheet of paper. Slow, controlled strokes are more useful than assuming every line will behave exactly as it would on a flat sketch. Marker tip shape, pressure and the direction of a stroke can influence how neatly you negotiate visible layer lines or changes in the form.
The direct UV printing supplies the existing train details. If you cover those details with artwork, the result becomes part of your design decision. If you want selected information to remain visible, leave space for it from the beginning rather than trying to reconstruct it afterward.
No claim is made here that the object can be cleaned back to its original state, repeatedly repainted or safely treated with solvents, primers, varnishes or other coatings. Those uses are not part of the verified specification. The confirmed painting recommendation is acrylic paint markers.
Using the Platform-Inspired Stand for Display
The included stand turns the train into a freestanding display object. That supports three distinct presentations:
- Unpainted display: present the supplied monochrome design and printed details.
- Finished artwork display: use the stand after completing your chosen side or sides.
- Alternating display: change which side faces outward when you want a different view.
Before choosing the outward-facing side, look at the object from the distance at which it will usually be seen. Fine marker details that work during close-up painting may have less impact on a shelf than a strong silhouette, readable letter structure and clear color separation.
The setting can also influence the decision to paint. In a collection focused on urban railway forms or the City Series, the untouched object may provide useful consistency. In an artist’s studio, a painted version may better represent an individual body of work. Neither use is more complete than the other.
Use the stand as supplied and place the object on a stable indoor display surface. The verified product information does not describe the train as weatherproof, UV-resistant, scratch-resistant or intended for outdoor installation.
Understanding the German Graffiti Heritage Positioning
The ET420 became a familiar feature of German metropolitan railway landscapes over several decades. Its characteristic three-car form, repeated doors and windows, and recognizable silhouette also became connected with train-writing and graffiti photography culture. Within parts of the scene, the train is affectionately known as “Plochi.”
City Series 25 uses that cultural reference as the finale of the first CHROMATICA City Series. Its positioning as a German Graffiti Heritage Edition is intentionally broader than one local transit system or one city. It is not assigned to a specific German city.
This matters when interpreting the object. It is not presented as a route-specific replica or as documentation of one operator. Its role is closer to an urban art object: a recognizable train-inspired form that can carry original artwork or remain as a reference to German train and graffiti culture.
Independent Artwork and Railway-Affiliation Limits
The ET420 “Plochi” Practice Train is an independent artistic interpretation inspired by the ET420 and German urban railway culture. It is not affiliated with, licensed by or endorsed by any railway operator or transport association.
The design contains no official operator logos, route numbers, destination displays or line identifiers. Those omissions are relevant for both collectors and artists. The object should not be described as official railway merchandise, an operator-authorized model or a route-accurate reproduction.
No verified model scale is stated. Its approximate 20 × 10 cm format should therefore be understood as the size of the practice object, not as evidence of a particular railway modelling scale.
Who This Practice Object Is Likely to Suit
The format is likely to suit people who want a train-shaped surface rather than a blank page or flat panel. That includes graffiti writers developing lettering, acrylic marker artists exploring compact compositions, train-culture collectors, urban art collectors and creative studios looking for a physical display object.
It may suit you if:
- you want to practise on a three-dimensional train-inspired object;
- you work with acrylic paint markers;
- you want two available sides for different ideas;
- you value the option to leave one or both sides unpainted;
- you want an included stand for freestanding display;
- you are interested in German graffiti heritage and urban railway culture;
- you accept fine layer lines and minor variations as normal features of 3D printing.
It may not be the right format if:
- you need a verified scale model;
- you want official operator branding or route-specific details;
- you require a completely flat practice surface;
- you need markers to be included;
- you expect an erasable surface or repeated repainting;
- you require confirmed compatibility with paints, solvents, primers or coatings other than acrylic paint markers;
- you need a product specified for outdoor display.
Quick Decision Checklist Before Painting or Displaying
- Do I primarily want an art surface or an untouched collectible?
- Will I paint both sides, one side or neither side?
- Which printed details should remain visible?
- Does my sketch account for the doors, windows and train silhouette?
- Have I inspected the normal 3D-print layer lines and surface variations?
- Am I using acrylic paint markers and following their instructions?
- Have I prepared the marker away from the object?
- Can I support and turn the train without touching fresh artwork?
- Which side should face outward on the included stand?
- Do I understand that City Series 25 is a series number, not a stated edition quantity?
- Do I understand that this is independent artwork rather than an official or operator-licensed model?
The simplest answer is that the ET420 “Plochi” is made for both painting and display. Paint both sides if you want the maximum creative surface, preserve it if the original presentation matters most, or use one side for each purpose. The best choice depends less on a fixed “correct” use than on what you want the object to record: the supplied City Series design, your own piece, or the relationship between the two.
