COMMERCIAL SIGNMAKING & CNC FABRICATION

Channel Letter Depth, LED Pitch & Stroke Width Calculator

Compute aluminum return depth, LED module pitch spacing to eliminate hot-spot zebra striping ($S = 1.4 - 1.6 \times D$), minimum stroke width for module fit, acrylic face expansion gaps, and Class 2 power supply wattage.

1. Letter Can & Return Geometry

Return Can Depth (mm / Inches)

Acrylic Face Material & Thickness

Trim Cap & Edge Retainer

2. LED Optical Specs & Sign Run

LED Lens Beam Angle

LED Module Wattage & Lumens

Total Linear Stroke Run of Sign (Meters)

Combined length of all letter centerlines in the sign set.

Engineering & Electrical Output

Max LED Pitch Spacing

190 mm

Center-to-center module spacing

Min Stroke Width

38.0 mm

Narrowest vector stroke allowed

Total LED Module Count

29 pcs

Based on sign stroke length

Class 2 PSU Wattage

42 W

12V DC (+20% safety headroom)

CHANNEL LETTER CROSS-SECTION & LIGHT CONE:

CNC Routing & Expansion Specs:

                            Face Route: 4mm single flute carbide upcut @ 18,000 RPM. Acrylic expansion clearance: 1.2mm perimeter deduction.
                        

Order Channel Letter DXF / SVG Vector Sets

SpotItLive converts logos and fonts into ready-to-cut vector packs: router face cutpaths with expansion offsets, aluminum back DXFs with weep drain holes, and centerline LED layout guides.

Order Channel Letter Vectors (29 DKK)