deliA CLI-first slicer front end for 3D printing

A print is a deli.toml in a folder, sliced in-process by PrusaSlicer's engine with OrcaSlicer's printer profiles, neither slicer installed. Plain text and --json out, so it is simple to use directly or through an AI. A small web view for what needs seeing.

Install GitHub Guide FAQ The story

deli setup                # once: tab completion, your printer, and how to reach it
deli add 3DBenchy.stl
deli slice                # how long it will take, and how much filament
deli view                 # the sliced Benchy in your browser, layer by layer
deli send --print         # to the printer, and start it

What it is

Lives in your shell
Each command does one thing to the print in the current directory and exits. No REPL, no TUI, no window to keep open.
A print is a text file
deli.toml holds the parts, the profiles and only the settings you changed. Come back months later and deli send --print prints the same thing.
No slicer to install
PrusaSlicer's libslic3r is compiled in, and the printer profiles are converted from OrcaSlicer's repository. The printers Orca knows are a deli setup away.
Settings by name
deli set infill 20%. When the name is not quite right, deli suggests the ones that are close. Defaults never get in the way.
Simple directly or through an AI
Plain text and --json out, exit codes you can branch on, and a skill that briefs an assistant. Nothing in deli calls a model or needs one.
Your printer, not a cloud
Sends to Klipper's Moonraker, Elegoo's and OctoPrint's own interfaces on your network. No account, no telemetry.

Install

On Linux, in WSL on Windows, or on macOS. deli is on PyPI as deli-slicer, with the engine inside, so uv (or pipx) installs it:

uv tool install deli-slicer

Without uv, one line installs it first, then deli:

curl -LsSf https://raw.githubusercontent.com/dcruver/deli-slicer/main/install.sh | sh

Then deli setup. The same wheels are on each release.

Update

deli updates itself. deli status mentions a newer release when there is one.

deli update --check       # what the latest release is, and whether you have it
deli update               # install it over the deli you are running

A print is a text file you can read

Everything about the print is here, and nothing that stayed at its default. Edit it, comment it, commit it.

# deli.toml
[printer]
name = "voron-2.4-350-0.4-nozzle"

[[part]]
file = "3DBenchy.stl"
scale = [1.5, 1.5, 1.5]
rotate = [0, 0, 45]
at = [60, 80]

[settings]
fill_density = "20%"
support_material = 1
support_material_style = "organic"

Models from the web, and what needs seeing

deli add given a Printables model's address lists its two files, fetches the one named with --file, then deli supports organic, deli slice and deli view — `deli add` takes a model's address: a file, a zip, a page linking to files, or a Printables model, whose files it lists and fetches through the site's own API.

deli view in a browser: a sliced model with organic supports building up layer by layer, coloured by what each extrusion is for; the supports hidden and shown again from the legend; then one layer at a time — `deli view` shows the sliced G-code in your browser: every move coloured by what it is for, a slider through the layers, and tools that write the deli command you could have typed.

Where it stands

Early. Everything above works. deli converts and slices for most of the printers OrcaSlicer knows, but has printed on two so far: a Voron 2.4 and an Elegoo Centauri Carbon. The README's Not done yet says what is missing, and an issue about your printer is welcome.