How to cut acrylic sheet
Updated: 23 October 2026
The sheet on the bench looks milky, or the first knife pass has already wandered into a crack. How to cut acrylic sheet starts with the film and the thickness, not with a brand of jigsaw. You are about to score, saw, or drill a pane you already have, or one of the sheets in our [acrylic glass pane comparison](/hub/diy-supplies/acrylic-glass-pane). Peter F. used Perspex's design guide, UK trade cutting notes, and amazon.co.uk review themes from 19 October 2026. We did not cut these twelve sheets in a lab.
The sheet on the bench looks milky, or the first knife pass has already wandered into a crack. How to cut acrylic sheet starts with the film and the thickness, not with a brand of jigsaw.
The sheet on the bench looks milky, or the first knife pass has already wandered into a crack. How to cut acrylic sheet starts with the film and the thickness, not with a brand of jigsaw. You are about to score, saw, or drill a pane you already have, or one of the sheets in our acrylic glass pane comparison. Peter F. used Perspex's design guide, UK trade cutting notes, and amazon.co.uk review themes from 19 October 2026. We did not cut these twelve sheets in a lab.
Our top picks
| Badge | Product | Thickness | Protective film | Nominal size | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  Sheetcuts Sheetcuts acrylic sheet, 610 × 610 mm, 3 mm | 3 mm | n/a | 610 × 610 mm | 8.4 | about £13.99 | View offer |
| Best value |  GSHUR GSHUR A4 acrylic sheets, 3 mm, pack of 2 | 3 mm | Both sides | 210 × 297 mm | 7.8 | about £6.99 | View offer |
| Alternative |  dabinzhijia dabinzhijia acrylic sheets, 20 × 30 cm, 2 mm, pack of 6 | 2 mm | Both sides | 20 × 30 cm | 6.8 | about £10.99 | View offer |
On this page
Peel the film before you decide the sheet is wrong
Most of these listings state protective film on both faces. That film is often frosted, so a clear PMMA sheet looks cloudy, semi-opaque, or even smoked until both sides are peeled. UK reviews on the GSHUR A4 pair, the PIANKEKE squares, and the dabinzhijia six-pack describe the same moment: the sheet turns clear after the film comes off. One buyer of a larger GSHUR sheet still called it smoked after peeling, so film explains the usual dull look and does not guarantee every sheet matches a catalogue photo.
Start a corner with a thumbnail or tape if the edge is tight. Peel both faces before you judge clarity, and leave the film on while you saw if you want it as a scratch guard. Perspex's cleaning note is cold water and a little detergent, and it warns against methylated spirits, white spirit, and wiping dry.
Score and snap a straight line in thin sheet
A score-and-snap cut is for a straight line in thin sheet. Gauge choice stays on the acrylic sheet buying guide. Perspex's design guide limits scribe-breaking to 4 mm: scribe with the line uppermost, clamp the sheet, and snap it over the edge of a bench. Simply Plastics describes score-and-break up to about 5 mm. Use the stricter 4 mm figure when the sheet might be Perspex-like cast, and treat about 5 mm as the upper end of a trade guide, not a promise for a marketplace pane whose grade is unstated.
A 2 mm sheet can be a knife job. A UK review cut the ASelected A2 pair, stated at 2 mm, with a Stanley knife for an aquarium lid. A 3 mm greenhouse pane is where that habit fails. On the Sheetcuts 610 mm square, a UK review calls a Stanley-knife claim misleading, and other buyers moved to a saw or a jigsaw. If the line is not straight, stop scoring. The crack will leave the groove.
Saw and drill the thicker pane
When the sheet is a 3 mm greenhouse or shed pane, use a fine-tooth saw or a jigsaw with the film left on. Support the sheet close to the cut so it cannot chatter. A UK review of the GSHUR 50 × 50 cm sheet reports a jigsaw cut and drilled holes for a temporary window. If the edge melts into a burr, the blade is dwelling.
A UK review of the Sheetcuts 610 × 457 mm sheet says the bit melts the hole if you rush it. Use a slow speed and scrap wood under the sheet so the exit side does not burst. Pixly's 5 mm A4 is thick enough that a knife is the wrong first tool. After the cut, wash with water and a drop of detergent. The best acrylic sheet UK page is where you choose the pane.
Laser cutting and when to hand the job over
Laser cutting appears in UK reviews of the dabinzhijia six-pack: a 10 W laser, a CO2 laser, and a Cricut Maker 4, on 2 mm sheet at about £10.99. The listing does not say cast or extruded. Perspex describes cast as the laser-friendlier grade and tells you to ventilate combustion vapour. We are not publishing power, speed, or passes. Those reviews show that some buyers cut that pack. They are not a setting sheet.
Do not point a laser at the Art3d five-pack because the title says acrylic. A bullet identifies PET, a verified UK review on 5 August 2026 says PET, and a reviewer said it was no good for laser cutting or printing. Do not laser PVC from a scrap box. Hand the job to a plastics cutter when the line is a curve, the edge must be polished, or the tolerance is tighter than a hand cut. UK trade pages quote about plus or minus 1 mm on their own cut-to-size acrylic. A qualifying purchase on amazon.co.uk can earn us a commission at no extra cost to you.
Common questions
Which side do I scribe?
Perspex says the scribed line should be uppermost when you snap the sheet over a bench. Clamp a straight edge and snap so the crack follows the groove. Scoring both sides, as Cut Plastic Sheeting suggests, can tidy a thin snap. It does not turn a 3 mm greenhouse pane into a knife job.
How do I drill without melting or bursting the sheet?
Slow the drill. A UK review of the Sheetcuts 610 × 457 mm sheet says a hurried bit melts the hole. Support the underside with scrap wood, keep the film on, and lift the bit so swarf can clear. A melted rim means you dwelt. A burst exit means there was no support behind the sheet.
Is a jigsaw acceptable?
For a straight or gently curved cut in 3 mm sheet, use a fine blade, leave the film on, and support the pane. A UK review used a jigsaw on the GSHUR 50 cm square for a temporary window. If the edge smears, change the feed. A polished show edge is a job for a plastics cutter.
Can I laser-cut any sheet titled acrylic?
Only if you have a reason to believe it is acrylic. dabinzhijia reviews include laser and Cricut use on 2 mm sheet, without a cast or extruded label. The Art3d five-pack is titled acrylic, sold as PET, and reported as poor for laser cutting. Ventilate the vapour. We have no tested power settings.
What should I not use to clean the cut pane?
Skip methylated spirits, white spirit, glass cleaner, and a dry cloth. Perspex specifies cold water and a little detergent, and it links solvents and plasticised PVC to crazing. Hand a curve, a polished edge, or a plus or minus 1 mm tolerance to a plastics cutter.
Related pages
Sources
Public UK sources and the amazon.co.uk listings compared on this page. Prices, sizes and stars were read on 19 October 2026.
- Perspex cell cast technical data sheet (2019) (retrieved 19.10.2026)
- Perspex design guide (retrieved 19.10.2026)
- Perspex tolerances via QD Plastics (retrieved 19.10.2026)
- Plastics Direct thickness guide (retrieved 19.10.2026)
- Plastic Sheets Direct greenhouse panels (retrieved 19.10.2026)
- Cut My shed and greenhouse windows (retrieved 19.10.2026)
- Simply Plastics cutting guide (retrieved 19.10.2026)
- London Fire, fire-resisting glazing note (retrieved 19.10.2026)