Quick answer: acrylic letters for signs
- What they are. Acrylic letters are individual letter shapes cut from sheets of PMMA (polymethyl methacrylate), the plastic also sold as Perspex, Plexiglas or Lucite (Wikipedia: Poly(methyl methacrylate)).
- Thickness. Sheet comes in a range of thicknesses, for example 3mm, 5mm, 10mm or 20mm.
- Finish. Clear, opaque in a wide range of colours, frosted/opal for even light diffusion, and mirror or metallic-effect sheet.
- Mounting. Adhesive pads for light indoor use, threaded studs into the wall for a flush fit, or standoffs that hold the letters away from the surface for a shadow effect.
- Where they’re used. Reception and office signage, retail storefronts, restaurant and hotel signage, wayfinding, and as the acrylic face on illuminated channel letters.
What are acrylic letters?
Acrylic letters are individual letterforms cut from sheet PMMA, the transparent plastic behind trade names such as Perspex, Plexiglas and Lucite. Acrylic (PMMA) transmits up to 92% of visible light at 3mm thickness, weighs roughly half as much as glass of the same size, and breaks into dull pieces instead of sharp shards if it fails (Wikipedia: Poly(methyl methacrylate)). Those properties are why it suits both illuminated and non-illuminated signage.
Shops cut acrylic letters with laser cutters, CNC routers, or for example a jigsaw or bandsaw for thin material. Thicker sheet holds its shape and takes fixings better; thinner sheet keeps weight down.
Understanding acrylic material
Cast vs extruded acrylic
Two manufacturing methods produce the acrylic sheet a shop works with. Cast acrylic is poured as liquid monomer into a mould and cured; extruded acrylic is made continuously from pellets that are heated and forced through a die, then polished rollers (Wikipedia: Cast acrylic). Cast sheet has better optical properties, machines more predictably, and resists solvent crazing better. Extruded sheet is more prone to melting at the cut edge. For sign work that involves machining, cast acrylic tends to give the cleaner result.
Transparency options
- Transparent/clear acrylic lets light pass straight through, which suits edge-lit letters where the glow travels through the material.
- Translucent/opal acrylic diffuses light evenly which suits backlit or channel-letter faces.
- Opaque acrylic blocks light and suits flat-cut, non-illuminated letters, available in a wide range of colours including metallics.
Types of acrylic letter signs
Flat-cut letters are the simplest type. A single sheet of acrylic is cut to the letter outline and mounted flush or on studs. They suit reception signs, office branding and retail wayfinding.
3D acrylic letters stack two or more layers, or mount a single letter on standoffs, to create depth and a shadow line. They give more depth than flat-cut letters for the same text.
Image source: surreyshopsigns.co.uk
Moulded acrylic letters are heated and shaped over a mould to make curved, dimensional shapes. Consider this for many identical letters, such as a logo repeated across several stores.
Acrylic channel letters are a 3D box construction: an acrylic face, metal or plastic sides (“returns”), and internal LED illumination. They suit storefront signage that needs to stay visible after dark.
Illumination options
Backlit (halo-lit) letters mount on standoffs with LEDs behind them, so light spills onto the wall and creates a glow around each letter’s edge.
Front-lit letters have LEDs illuminating the face directly, either through translucent acrylic or from external spotlights. Marquee letters, like the “Cosmopolitan” example below, use exposed bulbs set into the letter face instead.
Image source: cleveridaho.com
Edge-lit letters have LEDs positioned at the letter’s edge, so light travels through clear acrylic and the letter appears to glow from within. As a rule of thumb, this works best with thicker clear or lightly frosted acrylic; opaque colours won’t transmit light this way.
Image source: artsigns.com
Font selection for acrylic letters
Not every font cuts cleanly in acrylic. Thin strokes can snap during handling, and letters set with tight kerning can leave a weak connection between them.
Work well: sans-serif fonts (Helvetica, Arial, Montserrat), geometric fonts (Futura, Proxima Nova) and slab serifs (Rockwell, Roboto Slab). All three have fairly even stroke weights with few hairline details, which survive cutting and handling.
Image source: seizsigns.com
Need care: thin scripts and hairline weights, where very thin strokes can break. Enlarge the design, move to thicker material, or ask for bridges connecting loose elements such as the dot on an “i”. Letters set close together benefit from extra spacing to avoid a weak join.
Image source: pinterest.com
How to make acrylic letter signs?
Production follows a consistent sequence regardless of scale. A design is set in the chosen font and sized to the space it needs to fill. The file is then cut. Laser cutting is precise, holding close tolerances and a fine surface finish (Wikipedia: Laser cutting). For 3D or channel-letter builds, layers or returns are then assembled with acrylic cement or fixings, and any LEDs and wiring are fitted before the sign leaves for site.
Installation tips and best practices
Flat letters can go up with either adhesive pads (fast, indoor use, smooth clean surfaces only) or threaded studs set into pre-drilled holes in the wall. Studs are the more secure method for anything above a small desktop sign. Standoff mounts add a visible gap between the letter and the wall for a floating or shadowed look, and need slightly longer fixings and a level surface to look right. Whichever method, a printed or plotted template keeps multi-letter signs straight and evenly spaced, and a spirit level at the fixing stage saves a re-drill later. Illuminated signs get one extra step: test the lighting before final fixing, since a wiring fault is much easier to fix with the letters still on the bench.
Image source: signkiosk.com
Maintenance and care
Clean acrylic with a soft, non-abrasive cloth and mild soap and water. Many organic solvents can swell or dissolve acrylic, so avoid solvent-based cleaners (Wikipedia: Poly(methyl methacrylate)). Avoid abrasive pads. Outdoor signs benefit from a periodic check of fixings. Ask your supplier about repair or replacement for a damaged letter.
Selling acrylic letters at your sign shop
Who buys acrylic letter signs
Acrylic letters suit a wide range of a sign shop’s customers. Retailers and hospitality businesses buy them for storefront and reception signage. Offices and corporate clients buy them for reception walls and directory boards, for example in the 3D or moulded styles for a premium look. Other buyers can include, for example, property developers who need building identification. The same material and cutting process work for a single small letter or a full storefront run.
Pricing acrylic letter signs
Instead of quoting every job by email, a live customiser lets a shopper type their text, pick a font and colour, choose a size, and see a price update as they build the sign. Sign Customiser is built for this: a sign shop configures its fonts, colours or finishes, sizes and mounting add-ons once, and customers design their acrylic letter sign on the shop’s own website.
The FIXED_WIDTH (“Simple Letter”) pricing model prices a line as base price + (character count × price per letter), where spaces aren’t counted. The numbers below are illustrative only. A merchant sets their own rates in the admin.
| Sign | Characters | Price per letter (example rate) | Base price (example rate) | Illustrative total |
|---|---|---|---|---|
| ”OPEN” (small, flat-cut) | 4 | $6 | $20 | $44 |
| ”WELCOME” (medium, flat-cut) | 7 | $6 | $20 | $62 |
A mounting option, such as standoffs instead of adhesive pads, or an illumination upgrade, can add a further base price or a price multiplier on top of that total. The merchant controls what each selection costs.
Production and material notes
Cast acrylic suits cut sign work that involves machining, because it machines more cleanly than extruded sheet (Wikipedia: Cast acrylic). Illuminated letters add LEDs, which have long service lives. One report estimates 35,000 to 50,000 hours of useful life for white LEDs (Wikipedia: Light-emitting diode). When vector output is turned on, the order email links to the design file (SVG, and optionally EPS or AI), so a shop’s own workshop or trade supplier gets order-ready specifications without a back-and-forth.
Get started
Sign Customiser works with Shopify, WooCommerce, Wix, Webflow, Squarespace and Etsy. Plans run from $29 to $299 a month, and every plan starts with a 7-day free trial. Start your free trial, or see full pricing.
Frequently asked questions
What’s the difference between acrylic letters and channel letters?
Flat-cut acrylic letters are a single layer of sheet material, with optional lighting behind or around them. Channel letters are a 3D box construction with an acrylic face and metal or plastic sides housing internal LEDs, and can be lit from inside.
What mounting works best for acrylic letters?
Adhesive pads for quick indoor fixing on a smooth surface, threaded studs for a secure flush mount, or standoffs for a floating look with a visible gap behind the letter.
Can any font be cut in acrylic?
Many fonts work. As a rule of thumb, avoid very thin strokes in thin acrylic; they can break during handling. Give tightly-kerned or script fonts extra spacing or a bridge between loose elements.
How do I clean acrylic letter signs?
A damp microfibre cloth with mild soap. Skip solvent-based cleaners and abrasive pads.
