Welcome to the letter A in the Model Scenics & Modelling Materials glossary — your growing A to Z guide to the materials, tools, scenery items and modelling techniques used across model railways, dioramas and scale modelling. From acrylic paints and armature wire to air-drying clay and asphalt textures, this section is packed with beginner-friendly explanations to help you understand what each product is, what it’s used for, and how it can bring your miniature scenes to life.
Modelling Materials
- Abrasive paper — sandpaper used for smoothing plastic, wood, filler, resin, primer and painted surfaces.
- Abrasive pads — flexible sanding pads useful for curved surfaces, soft edges and delicate finishing work.
- ABS plastic sheet — a tough plastic sheet used for scratchbuilding structures, vehicle parts, industrial details and durable components.
- ABS plastic rod — solid plastic rod used for posts, pipework, railings, supports and scratchbuilt detail parts.
- ABS plastic tube — hollow plastic tube used for pipes, ducts, chimneys, sleeves and structural modelling.
- Acetate sheet — clear flexible plastic used for windows, glazing, windscreens, greenhouses and display screens.
- Acrylic caulk — flexible filler used for sealing gaps, blending terrain joins and creating rough scenic groundwork.
- Acrylic gel medium — a clear or textured medium used for water effects, surface texture, scenic bonding and paint effects.
- Acrylic inks — highly pigmented liquid colour used for washes, staining, tinting, weathering and translucent effects.
- Acrylic modelling paste — thick paste used for mud, rough ground, rendered walls, stucco, banks and textured surfaces.
- Acrylic paints — water-based paints used for basecoating, scenery, buildings, figures, terrain, rocks and detail work.
- Acrylic rod — clear or coloured plastic rod used for supports, pipework, signs, posts and light-effect modelling.
- Acrylic sheet — rigid clear or coloured plastic sheet used for windows, signs, glazing, display cases and modern structures.
- Acrylic tube — clear or coloured tube used for pipes, ducts, columns, display features and transparent effects.
- Acrylic varnish — protective clear finish used to seal paintwork in matt, satin or gloss finishes.
- Adhesive vinyl — self-adhesive film used for signs, stripes, masks, road markings and surface coverings.
- Aggregate — a general term for small stones, grit or mixed granular material used for ground texture, rubble and hardstanding.
- Air-drying clay — clay that dries naturally without baking, used for cobbles, walls, terrain, figures, rocks and scenic details.
- Air-dry filler — lightweight filler used for shaping ground, filling gaps, smoothing surfaces and building up scenic contours.
- Alcohol inks — translucent inks used for tinting resin, staining clear parts, colouring glass effects and creating rich weathering stains.
- Aliphatic resin glue — strong wood glue often used for timber, balsa, laser-cut kits and model aircraft construction.
- Alginate mould compound — flexible mould-making material used for taking quick impressions of textures, objects or scenic details.
- All-purpose filler — general filler used for gaps, terrain shaping, wall repairs, road surfaces and rough groundwork.
- Aluminium foil — thin metal foil used for tarpaulins, corrugated effects, metal sheeting, flashing and embossed surface texture.
- Aluminium mesh — fine metal mesh used for fences, grilles, vents, walkways, terrain support and industrial detail.
- Aluminium tape — self-adhesive metal tape used for cladding, ducting, flashing, metal panels and burnished surface effects.
- Aluminium rod — solid metal rod used for masts, poles, handrails, supports, pipework and scratchbuilt structures.
- Aluminium tube — hollow metal tube used for pipework, posts, ducts, chimneys, railings and structural details.
- Aniline dyes — strong wood dyes used for staining timber, veneer, stripwood and wooden scenic structures.
- Armature wire — bendable wire used to form trees, figures, vines, roots, pipework and other organic or shaped structures.
- Artist’s pigments — dry colour powders used for weathering, dust, rust, soot, earth tones and surface staining.
- Artist’s pastel dust — scraped pastel powder used for subtle weathering, grime, soot, dust and colour variation.
- Ash — fine dark scenic material used for cinders, burnt ground, industrial dirt, fire damage and ash ballast.
- Asphalt texture paste — ready-made paste used to create road surfaces, car parks, yards and hardstanding areas.
- Automotive body filler — strong two-part filler used for reshaping models, filling large gaps and creating durable scenic forms.
- Automotive primer — tough spray primer used on plastic, metal, resin and mixed-material models before painting.
- Artificial snow — scenic snow material used for winter layouts, frosted roofs, snowy roads and cold-weather dioramas.
Tools
- Airbrush — a spray tool used for smooth paint finishes, weathering, fading, shading and scenic colour blending.
- Airbrush compressor — the powered unit that supplies steady air pressure to an airbrush.
- Airbrush cleaning pot — a jar-like cleaning aid used when flushing paint and cleaner through an airbrush.
- Airbrush needle — the fine internal part of an airbrush that controls paint flow and spray pattern.
- Angle grinder — a rotary cutting or grinding tool occasionally used for heavy-duty baseboard, metal or workshop jobs, rather than fine modelling.
- Applicator bottle — a small bottle with a fine nozzle used for applying glue, scenic cement, washes or diluted paint.
- Awl — a pointed hand tool used for making pilot holes, marking positions and starting holes in card, plastic or timber.
Skills & Techniques
- Airbrushing — applying paint with an airbrush to create smooth coats, soft shading, weathering, fading and realistic colour transitions.
- Ageing — making models look older through paint, weathering, stains, wear, grime and subtle damage.
- Applying ballast — spreading, shaping and fixing ballast around model railway track to create a realistic track bed.
- Applying static grass — using glue and a static applicator to make grass fibres stand upright on fields, verges and embankments.
- Applying washes — using thin paint or ink to settle into detail, darken recesses and bring out surface texture.
- Assembly — joining model parts together accurately using suitable adhesives, alignment and test fitting.
- Air-dry clay sculpting — shaping air-drying clay into walls, cobbles, rocks, ground texture and small scenic features.
- Antiquing — adding darker tones, rubbed highlights and aged finishes to make surfaces look older or more worn.
- Ash weathering — using dark powders, greys and sooty tones to represent ash, cinders, fire damage or industrial dirt.
- Asphalt weathering — adding patches, cracks, stains, faded areas and road markings to make model roads look used.
Infrastructure
- Abutments — the support structures at the ends of bridges where the bridge meets the ground, road, railway or embankment.
- Access roads — minor roads leading to yards, farms, depots, industrial sites, stations or hidden service areas.
- Advertising hoardings — large signboards used beside roads, stations, factories, sports grounds and urban scenes.
- Aerials and antennas — rooftop or mast-mounted details used on houses, shops, signal boxes, offices and industrial buildings.
- Air-raid shelters — wartime or post-war structures used in historical layouts, military scenes, urban backyards and public spaces.
- Allotments — small garden plots often found near railway lines, housing estates or village edges, usually detailed with sheds, paths and vegetable rows.
- Alleyways — narrow passages between buildings, useful for urban scenes, terraces, yards and backstreet modelling.
- Animal pens — fenced enclosures for farms, markets, livestock yards and rural scenes.
- Aqueducts — bridge-like structures carrying canals or water channels over roads, railways, valleys or other waterways.
- Archways — curved openings in walls, bridges, viaducts, buildings and industrial structures.
- Ash pits — inspection or disposal pits used around steam locomotive depots and engine sheds.
- Avenue trees — lines of trees planted along roads, estate drives, parks or formal approaches.
- Awnings — projecting covers over shopfronts, station entrances, platforms, market stalls or doorways.
Details & Accessories
- Advertising signs — small signs used on shops, stations, walls, hoardings, vehicles and industrial buildings.
- A-boards — freestanding pavement signs used outside shops, cafés, pubs, stations and visitor attractions.
- Air vents — small ventilation details used on roofs, walls, industrial buildings, tunnels and service structures.
- Alarm boxes — small wall-mounted boxes used on shops, offices, factories, houses and public buildings.
- Animal figures — scale animals such as cows, sheep, horses, dogs, cats and wildlife used to bring rural and urban scenes to life.
- Ash bins — older-style bins or containers used in yards, industrial scenes, back alleys and steam-era settings.
- Axle boxes — mechanical detail parts found on wagons, carts, machinery and railway-related scenic clutter.