Recommended for built-in calibration tools and Marlin/Klipper/RepRap firmware
Setting Up a New FDM Printer: OrcaSlicer vs Cura
Both OrcaSlicer and UltiMaker Cura are free, open-source slicers that turn a model into G-code for an FDM printer. For a new machine, the practical split is this: OrcaSlicer lists calibration tools inside the app and states support for Marlin, Klipper and RepRap firmware, while Cura centers on a large settings surface plus an optional cloud workspace. This guide helps you pick one for your first setup and tuning pass.
Resource Guide2 picks
Say your new printer runs Klipper and you want to settle temperature and flow before committing to a long print. OrcaSlicer fits that sequence more directly. Its site lists printer auto-calibration tools including a temperature tower test, tolerance test, flow calibration and retraction test, and states support for Marlin, Klipper and RepRap firmware. The workflow is: install the slicer, run one listed calibration print, then change the matching setting and slice again. One boundary worth noting: OrcaSlicer states its only official platforms are the OrcaSlicer GitHub project page and the official Discord channel, and the site lists v2.4.2 for download — so get the installer there rather than from a mirror.
Now the other case. You want a wide settings surface and profile coverage for a printer that already has a community profile, and you would rather not run calibration tests first. Cura fits that. UltiMaker describes it as free and open-source, with a slicing engine, recommended profiles, a Custom mode giving over 400 settings, and STEP and IGES file support. The download page lists Cura 5.13 as the latest stable release, with installers for Windows (.exe, .msi), macOS Intel and Apple Silicon (.dmg, .pkg) and Linux (.AppImage), plus a 'Find previous versions' link. The trade-off runs the other way here: you get breadth of settings and profile coverage, but if you want a guided tuning sequence you will need to source those steps separately.
If you want to manage prints away from the machine, UltiMaker Digital Factory is an optional cloud workspace with a free tier (Printers Unlimited, Seats 2, Projects Max 5, Print Job History 20 jobs) and a Cura-powered cloud slicer that runs in the browser. UltiMaker states that from September 15, 2026 it is removing printer limits across all accounts and tiers. Treat this as a later decision, not a first step — local setup and tuning happen in the desktop slicer either way.
Whichever you choose, the first calibration print is a starting point, not a finished result. Both slicers are free and open source, so installing both and slicing the same model in each is a legitimate way to compare how they handle your machine before you commit to one workflow.
Two slicers for a new FDM printer 2
Pick based on your firmware and whether you want calibration tools inside the slicer.
Useful for a wide settings surface and an optional cloud workflow
Ultimaker Cura
What to check before you install
These questions point to the slicer that fits your setup, not a ranking.
Which firmware does your printer run?
OrcaSlicer states support for Marlin, Klipper and RepRap firmware. If your machine uses one of these, that support is documented; if it runs something else, check the project's own documentation before assuming the same workflow applies.
Do you want calibration tools built in?
OrcaSlicer lists a temperature tower test, tolerance test, flow calibration and retraction test. If you prefer to tune inside the slicer rather than sourcing steps elsewhere, that matters.
How much settings control do you need?
Cura's Custom mode exposes over 400 settings and its download page lists Cura 5.13 for Windows, macOS and Linux. Choose it if you want a wide settings surface and profile coverage.
Do you need to manage prints remotely?
UltiMaker Digital Factory offers a free tier and states that printer limits are removed from September 15, 2026. This is optional and separate from local setup.
A small adoption check
Run this once after installing either slicer, before longer prints.
Install from the official source
OrcaSlicer states its only official platforms are the OrcaSlicer GitHub project page and the official Discord channel; its site lists v2.4.2. Cura is downloaded from the UltiMaker Cura page, which lists Cura 5.13 with Windows, macOS and Linux installers and a 'Find previous versions' link.
Run one calibration print, then re-slice
In OrcaSlicer, start with a listed calibration tool such as the temperature tower test or flow calibration. After the print, change the matching setting and slice again. The observable result: the change you made shows up in the next print, or the setting value differs from your starting value when you reopen the profile.
Frequently asked questions
Can I use both OrcaSlicer and Cura with the same printer?
Yes. Both are free, open-source slicers that prepare models for FDM printers, so you can install both and slice the same model in each to compare results. Keep your calibration notes separate so you know which setting belongs to which slicer.
Where should I download each slicer?
OrcaSlicer states its only official platforms are the OrcaSlicer GitHub project page and the official Discord channel. Cura is downloaded from the UltiMaker Cura page, which lists Cura 5.13 installers for Windows, macOS and Linux, plus a 'Find previous versions' link.