Channel Letter 3D Generator

channel letter generator

initializing

v8.8

base body acrylic

project

save the current state (sliders, toggles, plate shape, hangers, LED colours, and any uploaded SVG/DXF) to a JSON file. load that file later to restore the exact configuration — useful for keeping a known-good baseline while you experiment. clear wipes the text, uploaded files, compose canvas, and 3D view back to an empty starting state.

input

sign type

height80 mm

choose font: Sans bold

System

Condensed

Sans display

Rounded

Slab / serif display

Script

Stencil

Specialty

smoothness1500

low = blocky / low-poly · high = ultra smooth (slower CSG)

plate shape

plate width

plate height

back features

wire holes (3mm per path) wire channels (5mm wide, 1mm deep) wire entries hanger loop(s)

tunnel width8 mm

wire entry positions

tap any combination to drill per-letter wire holes

external power rim tunnel

no external power tunnel

hanger width25 mm

hanger height15 mm

hanger thickness5 mm

hole dia6 mm

number of hangers

hanger side

wire holes pass through the plate at each path's start so LED leads can enter the channel from behind. wire channels are 5mm-wide grooves connecting all wire holes (minimum-spanning-tree). wire entries use the 3×3 compass picker to drill per-letter wire holes at the selected positions on each letter's outline — the picks REPLACE the legacy path-start holes when any are selected. hanger loop(s) extend from one edge of the plate with a hole for a nail or screw, centred in the loop.

bed chunking

bed X400 mm

bed Y400 mm

explode0 mm

show chunk boundaries

build a plate to see chunk count

splits the plate into bed-sized pieces for printing. set bed X/Y to your printer's usable area (Kobra 3 Max default is 400×400). drag explode to spread the pieces apart and inspect the cut lines. tap export chunks to download a zip of per-cell STLs (flat butt-joint faces — solvent-glue assembly).

channel-letter style

L1: closed cup + recessed lip pocket. acrylic seats in the pocket.

parameters

base growth5.0 mm

base floor thickness2.0 mm

wall thickness2.4 mm

letter depth (z)22 mm

acrylic thickness3.0 mm

lip depth4.0 mm

lip thickness1.5 mm

acrylic clearance0.4 mm

body floor1.0 mm

wire routing (LED)

hollow base (wire channel)

base wall3.0 mm

base top1.0 mm

wire holes (per letter)

hole diameter6.0 mm

hollow base creates a cavity (open at the back when mounted) for wires. wire holes pierce both base top and letter body floor, biased toward the bottom of each letter so they hide behind the mounting surface.

view

explode0 mm

geometry stats

contours— body volume— base volume— acrylic vol— est. PETG mass— triangles— cut joints— watertight—

export

STL for 3D print (base, body) · SVG for laser cut (acrylic). mm units.