PVC and Plastic Sheets

PVC and plastic sheets are a staple for model makers building structures, dioramas and terrain from scratch, and are also used for cosplay and lighting projects. Find out what each plastic is suited to, how to cut it and what to glue it with. Foamed PVC is lightweight and moisture-resistant; HIPS is thin polystyrene for details; ABS is tougher; PET is clear or milky white; and mirrored polystyrene replaces glass mirrors where glass might break. See how to combine plastics with foam board and EVA foam on our diorama and model making materials page.

PVC and plastic sheets for models, dioramas and crafts

Architectural models

Cut facades with window openings and crisp white walls for a 1 : 100 scale model from 1 mm HIPS. Foamed PVC or Celuka, 5–10 mm thick, makes a sturdy baseboard and ceilings that will not sag. Celuka has a hard surface that takes paint well. Clear PET works as glazing; milky PET makes frosted glass or a translucent wall.

Pick: For facades, use white 1 mm HIPS sheet; for the base, use 10 mm PVC Celuka or 5 mm foamed PVC; for glazing, use clear 1 mm PET sheet.

Dioramas and tabletop terrain

Build sci-fi panels, industrial walls, bunkers and containers from 1 mm HIPS, and scribe bricks or panel joints into it. Make load-bearing walls from 3 mm foamed PVC and glue HIPS on as cladding; you can also cut figure bases from 3 mm PVC. Clear PET works as water, ice, glass or a display cover.

Pick: For details and dark interiors, use black 1 mm HIPS sheet; for walls, use 3 mm foamed PVC.

Model railways and scratch-building

Build station buildings, platforms, retaining walls and bridge parts with 1 mm HIPS for details and 3 mm foamed PVC for the structure. Use 3 mm PVC for low-relief background buildings and the front panels of layout modules, too. Glaze station and signal-box windows with clear PET.

Pick: Use 3 mm foamed PVC for the structure, white 1 mm HIPS sheet for facades and clear 1 mm PET sheet for windows.

Cosplay and vacuum forming

Shape armour plates, helmets and bracers with a heat gun or vacuum former. 3 mm ABS is tougher and more impact-resistant; 1 mm HIPS is easier to work and suits details, overlays and first-time vacuum forming for masks, covers or terrain tiles. Make sturdy props and bases from 5–10 mm PVC Celuka.

Pick: For sturdy plates, use black 3 mm ABS sheet; for details and vacuum forming, use 1 mm HIPS.

Lighting and photography

Milky PET diffuses light evenly in front of an LED strip, making it useful for light boxes, lanterns and illuminated model displays. Silver or gold mirrored polystyrene works as a reflective surface for product photography.

Pick: For diffusing light, use milky white 1 mm PET sheet; for reflections, use silver 1 mm mirrored PS sheet or gold.

Home and decorations

Cut shatter-resistant mirrors for a child's bedroom and mirrored wall shapes from mirrored polystyrene: gold has a warm look, while silver is neutral. 3–5 mm foamed PVC suits house numbers, door signs and waterproof plant-pot labels. It withstands moisture, so you can also use it in a bathroom or on a balcony.

Pick: For mirrored shapes, use gold 1 mm mirrored PS sheet; for labels, use 3 or 5 mm foamed PVC.

PVC and plastic sheets: which plastic to choose and how to work with it

How to score and snap thin plastic (HIPS, PET and mirrored PS)

Do not cut all the way through 1 mm sheets. Score a line and snap the sheet for a straight break and a clean edge.

You will need:

cutting mat · steel ruler · sharp modelling knife or plastic scriber · fine marker · sanding stick or fine file

1. Leave the protective film on the sheet, especially on PET and mirrored polystyrene.
2. Mark the line with a fine marker on the back. Mark and score mirrored polystyrene on its white backing: a score on the mirrored face will scratch it and the break will not be straight.
3. Hold the steel ruler firmly, keep your fingers flat and well away from its edge, and run the knife along the line 2–3 times. Score only; do not cut through.
4. Place the score over the edge of a table and bend the sheet away from the score; it will snap along the line.
5. Smooth the edge with a sanding stick or the back of a blade. Use a file to even up thicker parts.
6. For curves, score lightly several times and snap in short sections. You can also cut 1 mm PET with curved scissors.

How to cut and drill foamed PVC, Celuka and ABS

Cut foamed PVC up to 3 mm thick with a knife; use a saw for thicker sheets, Celuka and ABS. Chips fly when sawing and drilling, so wear safety glasses.

You will need:

cutting mat · steel ruler · snap-off knife · fine-toothed saw or jigsaw with a plastic-cutting blade · clamps · twist drill bit · file or sanding block · safety glasses and dust protection

1. Cut foamed PVC up to 3 mm thick with a knife along a steel ruler secured with a clamp, using several light passes. This gives a better result than one heavy cut.
2. Cut 5–10 mm sheets and ABS with a jigsaw fitted with a blade marked for plastic, or with a fine-toothed saw: use a high speed and feed slowly.
3. Clamp the sheet close to the cut line so it does not vibrate. Wear safety glasses whenever your work creates chips.
4. Celuka and ABS are harder: expect to make several passes and keep a new blade to hand.
5. A standard twist drill bit is enough for holes. For deep holes, withdraw the bit regularly to prevent the material overheating; do not use coolant.
6. Smooth the edge with a file or sanding block. The open cells show on the edge of thick foamed PVC – fill them with filler and sand smooth.

Which adhesive to use for each plastic

Solvent adhesives weld only plastics of the same type. Choose your adhesive to suit both materials being joined.

Tips for working with PVC and plastic sheets

• Score HIPS with the back of a modelling blade or a scriber; this removes a thin strip of material instead of pushing it upwards.
• Use black HIPS for interiors and to block out light behind windows; use white where you plan to paint the part.
• Milky PET and an LED strip make an evenly lit panel for a light box or model display.
• Staples hold in foamed PVC, even close to the edge, without cracking it.
• When shaping with heat, monitor the sheet temperature, not the heat gun setting: foamed PVC about 120–130 °C, HIPS 150–175 °C, ABS 150–180 °C, PET 120–160 °C. If possible, measure with an infrared thermometer.
• For hot bending, use a radius of at least twice the thickness of the foamed PVC. Cold bending is only for sheets up to 6 mm thick, at a temperature of at least 20 °C, and with a radius of at least 100 times the thickness – 300 mm for a 3 mm sheet.
• Before vacuum forming PET or ABS, make a test piece; both have a narrower temperature range than HIPS.
• Wipe static dust off with a damp anti-static cloth before painting – only after all gluing is done, as anti-static products reduce adhesive grip.

Handling and storing plastic sheets

Store sheets flat and horizontal, without tension, in a dry place at around 20 °C, not outdoors. Carry large, thin sheets by both long edges, never by one corner – they could break. Plastics are more brittle when cold, so let them warm to room temperature before cutting. Keep PET and mirrored polystyrene in their protective film until installation, and clean them with a soft cloth, water and mild soap, without abrasive products. Foamed PVC expands by about 0.07 mm per metre per degree, so drill larger mounting holes for outdoor signs.

Frequently asked questions

What is the difference between foamed PVC and PVC Celuka?

Both are foamed PVC. Celuka has a dense surface layer formed in the same process as its core, so it is harder, smoother and more resistant to dents, but heavier. Standard foamed PVC is lighter and has an even matt surface.

Can you cut 3 mm PVC sheet with a knife?

Yes. Place it on a cutting mat, position a steel ruler and run a sharp knife along it with several light passes. Cut 5 and 10 mm sheets with a fine-toothed saw or a jigsaw with a plastic-cutting blade.

What should you use to glue HIPS (polystyrene sheet)?

Liquid plastic model glue: it softens both surfaces and welds them together. For HIPS joined to another material, use cyanoacrylate adhesive and test it on a scrap first.

How do you glue PET sheet?

PET is difficult to glue because it has low surface energy. Use strong double-sided tape, cyanoacrylate with primer for hard-to-bond plastics, or structural acrylic adhesive, and always test first. Polystyrene glue will not bond PET.

Can you bend PVC sheet with a hairdryer?

A hairdryer is not powerful enough; use a heat gun or strip heater. Foamed PVC is shaped at a sheet temperature of about 120–130 °C. A change in colour or bubbles means it has overheated; white marks and cracking mean the temperature is too low or the material is overstressed.

ABS or HIPS for cosplay armour?

ABS is tougher and more impact-resistant, so it suits sturdy plates. HIPS is easier to cut and glue, and is suitable for details and overlays. Both can be shaped with heat.

Which plastic is suitable for home vacuum forming?

1 mm HIPS – it forms at 150–175 °C, is forgiving to work with and does not need drying. For clear parts, use PET (120–160 °C; overheating makes it cloudy and brittle); for hard shells, use ABS, which must be dried before forming.