Sign face
The face is the front panel of a sign: on a channel letter it is the letter-shaped piece of acrylic or other material that closes the front and shows the color and the light.
Faces on channel letters
A front-lit channel letter is a shallow box: the back at the bottom, the return around the sides, and the face on the front. The face is usually held in place by trim cap around its edge, and the light from the LEDs inside shines through it.
| Face material | Typical use |
|---|---|
| Acrylic, often 3/16 in (about 4.5 mm) | The most common face for lit channel letters; white or colored, often with translucent vinyl on top |
| Polycarbonate | Where impact resistance matters, for example low signs people can reach |
| Aluminum or ACM | Non-lit letters, or faces with push-through letters or routed openings |
These are typical choices; the right face depends on the lighting, the location and the look.
Sign cabinet faces
On a sign cabinet (a lightbox), the face is the large panel in front, often polycarbonate or flexible face material, with the graphics printed or applied in vinyl. Routed aluminum faces with push-through acrylic letters are another common build.
Cutting faces
Channel letter faces are cut to the letter outline on a CNC router or laser. With trim cap, the face is usually the same size as the outer edge of the return, so the trim cap wraps over both. Because each letter is a different shape, and acrylic is one of the costlier sign materials, nesting the faces tightly on the sheet saves real money on bigger jobs.
How NestSigns handles it
NestSigns nests letter faces from your design file onto full acrylic sheets and leftovers, keeps a separate stock list for each color and thickness, and numbers every part in the layout summary PDF so each face can be matched to its letter.
Related: Channel letters · Trim cap · Letter backs · Acrylic sheet nesting software · All glossary terms
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