- Laser cut sample
- Cut width tests. A safe cut width is 3mm
- Laser cut edge detail 20mm extruded acrylic
Clear extruded acrylic sheet Perspex™
|Our supply:||2mm, 3mm, 5mm, 10mm are generally a stock item at the Production Studio|
|Thickness:||Available in 2mm, 3mm, 4mm, 5mm, 5.8mm|
|Sheet sizes:||>2mm clear extruded acrylic is produced in 2440 × 1220mm sheets. The largest single piece that can be worked on ours lasers is 2400 × 1200mm. Any size below is available, so simply tell us what you need and we’ll price it for you!|
|Tolerance:||If sheet thickness tolerance is of importance for engineering applications, or for components to slot together, you may want to use extruded clear and not cast clear. The manufacturing process for extruded gives much tighter thickness tolerance (generally <10%), in comparison to cast acrylic manufacture. Ask for details if this is a concern.|
Manufactured by extrusion, extruded clear acrylic sheet is more suitable for laser cutting than cast acrylic. It laser cuts with a highly polished edge. Clear extruded acrylic sheet transmits 92% of light, which in many cases is a better light transmission than glass.
Acrylic sheet is supplied to us with a protective plastic film on both sides. When only laser cutting is required, we leave the plastic film on. This helps to reduce heat marks and protects the surface from scratches.
Cut widths & Kerf
As a benchmark, we recommend that minimum cut widths be no smaller than the corresponding thickness of the material. For example, if cutting from 3mm acrylic, its best not to allow anything less than 3mm in width. We can go smaller (see cut width image above) but this can make your components quite fragile which might not be suitable for the application. “See more on laser Kerf (how much the laser takes away.)”:
Acrylic laser cuts with a highly polished edge. We achieve this using a high laser frequency (ppi. pulses per inch ) that melts the edges as it cuts. If you look closely at the edge it is not entirely smooth and is made up of lots of tiny vertical lines. This is caused by the pulses of the laser which is more evident on thicker acrylic.
As with all materials thicker than 10mm we use a longer focus lens to help the laser maintain a clean cut. Thicker acrylic has a slightly different appearance than thinner acrylics where the pulsing of the laser is more evident. Read more about laser focal points and cut edge appearance.
For volume orders that require engraving from uniform sizes of rectangular or square acrylic sheets we also offer a diamond polishing service. Get in touch to find out more.
Extruded clear acrylic engraves with little contrast so is more suitable for cutting purposes only. If you require engraving also it is best to specify to use clear CAST acrylic which engraves with a white milky finish.