Guide · October 2026
How to nest channel letters to save material
Acrylic, aluminum composite and PVC are some of the biggest costs on a channel letter job. How tightly the letters are packed on the sheet decides how many sheets you buy. Here is how to nest letters well, by hand or with software.
1. Set part spacing from your router bit
The gap between letters has to be at least the width of the cut. If your bit is 1/8 in (0.125 in), a gap of 0.125 in leaves no material between two letters, and one bad move ruins both. A safe rule is bit diameter + about 0.05 in:
| Bit diameter | Suggested gap |
|---|---|
| 1/8 in (0.125 in) | 0.175 to 0.2 in |
| 3/16 in (0.1875 in) | 0.24 to 0.25 in |
| 1/4 in (0.25 in) | 0.3 in |
Keep an edge margin too (0.1 in or more), so the outer letters do not run off a sheet that is slightly out of square.
2. Decide on rotation before you nest
Letting letters rotate to any angle packs the tightest, but it is not always allowed:
- Brushed or grained material (brushed aluminum, some trim caps and coated sheets): use 0° and 180° only, so the grain runs the same way on every letter.
- Printed or pre-masked faces with a direction: no rotation.
- Plain acrylic, PVC and ACM backs: any rotation. This is where most of the savings are.
3. Put small parts inside letter holes
The counters of O, A, B, D, P, Q, R and the numbers 0, 4, 6, 8, 9 are open material. Small letters, periods, hyphens and logo pieces can be cut inside them. On a job with a mix of large and small letters, this alone can save a sheet.
Watch one thing: the hole pieces of a letter (the center of an O, for example) must stay with that letter if you are cutting the letter as a frame. Treat a letter and its holes as one part.
4. Nest faces and backs from the same artwork
Faces and backs are usually the same outline on different materials. Nest each material on its own, but keep the same part numbers on both, so the face and back of each letter can be matched after cutting.
5. Use leftovers first
Most shops have a stack of leftover pieces from earlier jobs. Before opening a full sheet, check whether the small letters fit on a leftover. A simple stock list per material (size and count of full sheets and leftovers) makes this quick, and keeps you from buying sheets you already have.
6. Handle letters bigger than the sheet
A letter taller than the sheet has to be divided. Split it where the seam is easiest to hide, add a joining strip (about 1 in) on one side if the pieces will be glued or screwed together, and label the pieces (A1, A2…) so the installer knows which go together.
7. Number every part for sorting
The slowest part of a big letter job is often after the router stops: sorting dozens of loose letters into faces, backs and returns. Number every part on the cut sheet, and print a sheet that shows where each number belongs in the original layout.
Nesting by hand vs. nesting software
Nesting by hand in Illustrator or CorelDRAW works for a few letters. For a full storefront set it takes a long time, and it is easy to leave a gap smaller than the bit. General nesting tools pack rectangles or simple shapes well, but most do not put parts in letter holes, keep holes with their letter, or track leftovers.
NestSigns was made for this job. On a real channel letter order (72 faces on 46 × 46 in sheets, 0.2 in spacing, any rotation) it placed all 72 parts on 6 sheets in about 10 seconds. It reads AI, PDF, DXF, SVG and CDR files, and exports cut-ready PDF, AI and DXF with every part numbered.
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Quick checklist
- Gap = bit diameter + 0.05 in, edge margin 0.1 in or more
- Rotation: any for plain material, 0/180° for grain, none for printed faces
- Small parts in letter holes, holes kept with their letter
- Same part numbers on faces and backs
- Leftovers before full sheets
- Oversize letters divided, with joining strip and labels
More questions? Read the FAQ or see what NestSigns does.