A double-sided practice train is not simply a flat sketch with a second blank page attached. The two painting surfaces belong to the same physical object, while printed windows, doors and other train details already divide the available space. The object can also be viewed from an angle or turned around on its stand. Those conditions make planning more important than trying to solve every decision with a marker in hand.
The Bangkok Graffiti Practice Train gives you several valid approaches. You can develop one visual system across both sides, use each side for a different lettering study, paint only one side, or leave the entire object in its original monochrome design. This guide explains how to choose between those approaches and turn a paper sketch into a composition that makes sense on the physical train.
What the Bangkok Practice Train Is Designed For
City Series 17 – Bangkok is a 3D-printed urban art object with direct UV-printed details. It measures approximately 20 × 10 cm, has paintable front and reverse sides, and is designed for use with acrylic paint markers. Its reduced black, grey and white appearance provides a structured base for lettering, characters, throw-ups, color studies and experimental pieces.
The important word is structured. Unlike plain paper, the train already has a visual identity. Windows, doors, panel divisions and other printed elements affect where letters can sit and how clearly they can be read. Fine layer lines and minor surface variations are also normal characteristics of 3D printing, so the physical surface should be inspected rather than treated as perfectly identical to a digital rectangle.
The object can serve three related purposes:
- Practice surface: use one or both sides to test lettering, characters, color relationships or composition.
- Finished urban art object: design the artwork with angled viewing and display in mind.
- Unpainted collectible: retain the original monochrome Bangkok-inspired design and place it on the included stand.
You do not need to force all three purposes into one project. A focused lettering study can be more useful than an overworked “finished” piece, while an unpainted side can provide deliberate contrast rather than looking incomplete.
What You Receive and What You Need Separately
The verified contents are:
- 1 × City Series 17 – Bangkok Graffiti Practice Train
- 1 × platform-style display stand
Acrylic paint markers and decorative items are not included. The train is designed for acrylic paint markers, but this guide concentrates on composition rather than marker selection or surface-finishing methods.
For the planning stage, a basic set of drawing materials is enough:
- plain paper or a sketchbook;
- a pencil and eraser;
- a dark pen for final outlines;
- colored pencils or other familiar sketching tools for rough color notes;
- small removable paper labels, if you want to identify Side A and Side B without marking the train.
Before sketching, look at both sides in normal room light. Note which printed divisions attract attention, where the longest uninterrupted areas appear and how the train sits on the stand. Do not assume the reverse side will feel compositionally identical to the front simply because the overall format is similar.
Choose a Two-Sided Concept Before You Start
The first useful decision is not the color of the fill. It is the relationship between the two sides.
Assign temporary roles such as Side A and Side B. Side A might be the side you expect to display most often, but it does not have to be. Then write one sentence describing the job of each side. For example:
- Side A: primary straight-letter piece with controlled color.
- Side B: looser version of the same name with a character.
Or:
- Side A: warm-color lettering study.
- Side B: cool-color lettering study using the same structure.
This simple statement prevents a common failure mode: finishing one side without leaving any visual or conceptual space for the second. If the first side uses every strong color, every effect and the most complicated letter structure, the reverse can feel like an afterthought.
Think of the project as one object, not two unrelated panels
Even when the sides are deliberately different, viewers understand them as parts of one train. Give the project at least one connecting element. That connection could be the same name, a repeated outline color, a shared character, a recurring symbol or a consistent level of complexity.
The connection does not need to be obvious from a distance. A small repeated detail can be enough to make the two sides feel intentional when the object is turned around.
Map Lettering Around Windows, Doors and Printed Details
Train details can be treated in three basic ways: respected, crossed or incorporated. None is automatically correct. The choice depends on whether you want the lettering to feel integrated with the object or imposed across it.
Respect the details
Place major letter bodies inside the larger available areas and allow windows, doors or panel divisions to remain readable. This approach usually produces a controlled result and preserves more of the original monochrome design.
It works well for compact straight letters, smaller names, character studies and compositions that use the train details as a grid. The risk is that the artwork can become fragmented if every printed division is treated as an absolute boundary.
Cross the details
Let the piece travel across windows, doors and printed divisions as a larger unified form. This gives the letters more visual scale and can make the artwork feel less constrained.
However, crossing a detail changes the readability of both the piece and the underlying train design. Thin letter sections may disappear into busy areas, while outlines can become difficult to follow where several printed elements meet. Test these intersections on paper before committing to them.
Incorporate the details
Use existing divisions as active parts of the composition. A door line might coincide with a letter break. A row of windows might run through the middle of a fill. A panel boundary might become the point where one color changes into another.
This method can look highly specific to the object because the artwork responds to what is already present. It also requires the most planning. If too many train details are assigned special roles, the composition can become mechanically divided rather than fluid.
Establish a hierarchy
Decide what viewers should notice first, second and third. A practical hierarchy might be:
- the overall word or character silhouette;
- the main fill and outline relationship;
- smaller interior effects and interactions with train details.
If the smallest effects are more visually aggressive than the letters, the piece may become difficult to read. Printed features already add information, so every extra arrow, highlight, cut or pattern needs a clear purpose.
Decide Between Matching, Contrasting or Experimental Sides
There is no requirement for both sides to use the same lettering style. The most useful choice depends on what you want to learn or display.
Matching sides
Use the same name, basic letter structure and color family on both sides. Change only selected variables, such as the background interaction, character placement or secondary color.
This is effective when you want the train to retain a consistent identity from either direction. It also lets you compare small composition changes without changing the entire visual system.
The main risk is repetition. If both sides are nearly identical, the second side may feel like a copy rather than a meaningful variation. Give it one clear difference: alternate letter connections, a reversed color order, a different shadow direction or a simplified treatment.
Contrasting sides
Give each side a distinct style or mood. One side could use disciplined straight letters while the other uses a loose throw-up. One could be dominated by warm colors and the other by cool colors. One might prioritize lettering while the other gives more space to a character.
Contrast makes full use of the double-sided format and is useful for practice. To keep the object coherent, repeat at least one element across both sides. A common keyline, accent color or tag treatment can provide enough continuity.
Experimental sides
Treat one side as the resolved composition and the other as a controlled test surface. The experimental side could explore cropped letters, unusual spacing, reduced color or a less familiar structure.
“Experimental” should not mean unplanned. Set a question for the side before beginning: Can the name remain readable when the letters are wider? Can one accent color connect separate forms? Can the windows divide the fill without breaking the word? A defined question turns the result into useful practice.
Build a Simple Color Plan for the Monochrome Base
The black, grey and white base can support bright color, limited color or mostly monochrome artwork. A useful plan assigns colors by function rather than collecting as many colors as possible.
Start with four possible roles:
- Main fill: the dominant color or color group inside the letters.
- Outline or keyline: the edge that separates the letters from the underlying details.
- Shadow or depth element: a supporting form that helps establish direction and weight.
- Accent: a limited color used for highlights, cuts, symbols or small repeated details.
You do not need all four. A fill and clear outline may be enough, particularly when printed train details remain visible around the piece.
Connect the sides through color
If the lettering styles differ, color can provide continuity. Options include:
- using the same outline color on both sides;
- repeating one accent color in different proportions;
- using related warm or cool families;
- reversing the fill and outline roles between the sides;
- keeping both sides mostly monochrome and assigning one accent to each.
Avoid choosing colors only as isolated swatches. Their positions matter. Two strong colors placed in equal amounts can compete, while one dominant color and one restricted accent usually create a clearer order.
Also consider the visible base. Leaving selected areas of black, grey and white unpainted can create contrast and preserve the object’s printed structure. Covering more of the side is a compositional choice, not a requirement.
Use Paper Sketches to Test Scale and Placement
A paper sketch does not need to reproduce the train perfectly. Its purpose is to expose spacing problems before they reach the physical surface.
- Draw a simple horizontal boundary. Mark approximate areas for the roof line, lower edge and major printed divisions.
- Block the word as a silhouette. Use simple boxes or broad shapes before drawing internal letter details.
- Check the first and last letters. These often become cramped when the middle of the word is designed first.
- Mark windows and doors over the sketch. Identify where they cut through important letter sections.
- Reduce the sketch. View it at a smaller size to see whether the overall rhythm survives without fine details.
- Create a second version. Change one major variable rather than redrawing the same idea repeatedly.
Plan the negative space
Do not evaluate only the letters. Look at the unpainted shapes around them. Narrow gaps trapped between letters and printed details can appear accidental. Larger, deliberate areas of visible monochrome base usually read more clearly.
Check the spaces above and below the word, at both ends, and between major letter masses. If one end is visually heavy, a small extension or secondary element on the opposite end may balance it. That does not mean every gap must be filled.
Separate scale from detail
Writers sometimes solve a weak silhouette by adding more internal effects. That rarely fixes the underlying problem. First make sure the word occupies the intended amount of space and has a clear rhythm. Add highlights, patterns and smaller cuts only after the large structure works.
Plan for the Train’s Three-Dimensional Edges
The main painting surfaces are the front and reverse sides, but the train is still a three-dimensional object. Its edges affect how a composition is perceived from an angle, even if your planned artwork remains on the two designated sides.
Before finalizing the sketch, place the train on the stand and view it from the left, right and slightly above. Ask:
- Does an important letter end too abruptly near an outer edge?
- Does the visual weight collect at only one end?
- Will the first readable element be the letter you intended?
- Does the upper silhouette remain clear when the object is viewed from above?
- Are small details positioned where they are likely to be visually compressed?
Avoid designing as though viewers will always look straight at the middle of the side. Angled viewing can make letters near the ends appear narrower. Give essential letter sections enough visual weight to remain understandable.
Do not automatically continue artwork around an edge just to connect the sides. The verified painting surfaces are the front and reverse sides. A visual connection can instead be created through repeated color, matching placement or related letter structure.
Consider the Display Stand While Composing the Artwork
The included platform-style stand changes the project from a loose practice surface into a freestanding display object. If you plan to display the finished train, compose it in the position in which it will normally be seen.
Choose a primary viewing side
Double-sided does not mean both sides must receive equal viewing time. Decide which side will usually face the room. That side can carry the more resolved composition, stronger title treatment or clearest color hierarchy. The reverse can function as a companion study.
If the display position may change regularly, design both sides to work independently. Avoid relying on a sequence that requires viewers to see Side A before Side B.
Check the lower area
When the train is placed on its stand, the lower part of the object participates in a wider silhouette. Examine whether low shadows, underlines or extensions become visually crowded near the platform-inspired base. A composition that looks open while the train is held in the hand may feel denser once displayed.
Use normal viewing distance
Set the train where it may eventually sit—a desk, studio surface or shelf—and step back. Fine effects that look important at close range may disappear, while the overall letter width, color balance and empty space remain visible. Make final planning decisions based on both close and normal display views.
When to Paint One Side and Leave the Other Clean
Painting only one side is a complete approach, not a compromise. The original monochrome side can act as a reference to the object before customization and create a strong contrast with the painted side.
This option makes particular sense when:
- you want one focused composition rather than two competing pieces;
- you value the original Bangkok-inspired design as part of the display;
- you want the option to rotate between a clean and customized presentation;
- your concept depends on a “before and after” relationship;
- you are satisfied with one side and do not have a strong reason to add another.
If one side will remain clean, plan the painted side with that contrast in mind. Repeating some of the original black, grey or white within the artwork can make the transition feel more deliberate. Alternatively, a highly colored painted side can emphasize the difference.
There is also no obligation to paint either side. The train can remain in its original monochrome design and be displayed on the included stand as an urban art object.
Final Checks Before Applying Acrylic Paint Markers
Once marker work begins, composition changes become more consequential. A short review can catch the problems most likely to weaken the finished piece.
- Confirm the role of each side. Can you describe Side A and Side B in one sentence each?
- Check the large silhouette. Does the word or character arrangement work before interior details are added?
- Review printed intersections. Know where letters cross windows, doors and other details, and whether each crossing is intentional.
- Check both ends. Make sure the first and last letters have enough room and do not appear accidentally cropped.
- Limit the palette by function. Identify the fill, outline, depth element and accent rather than improvising every color.
- Find the connection between sides. Repeat at least one structural, symbolic or color element unless total contrast is the explicit concept.
- Inspect the physical surface. Account for visible layer lines and minor variations instead of assuming a perfectly uniform plane.
- View the object on its stand. Check the primary display side, lower visual weight and angled readability.
- Decide what stays visible. Mark the monochrome areas you intend to preserve so they are not covered through momentum.
- Stop adding effects to solve structural problems. If the layout feels weak, revise scale or spacing on paper first.
A useful two-sided plan does not require maximum complexity. It requires clear decisions: what each side is for, how the lettering responds to the printed train details, which colors carry the composition and how the object will be viewed. Once those choices are settled, the physical train becomes less of an uncertain surface and more of a defined format for your own work.
