How we work out what fits

3D Printer Fits answers one question: will this part, upgrade or filament work with my printer? Here is where every answer comes from.

Printer specs

Build volume, motion system, extruder type and nozzle sizes come from the printer profiles bundled with OrcaSlicer, which printer makers and the community keep up to date. A new printer usually appears there around its launch, so we pick it up quickly.

Part compatibility

We read the public product listings of printer makers and parts stores and record which printers each listing names, including lists like “Neptune 3 Pro/Plus/Max” and ranges like “Centauri Series”. We skip vague claims such as “fits most printers”, and we drop printers a listing says are not compatible.

Every part on a printer page shows the listing's own wording, so you can see exactly what the seller claims. A part marked Listed as compatible is the seller's claim. A part marked Verified fit has been confirmed by an owner report.

Stores we currently read:

Filament

Print temperatures, diameters and colors come from SpoolmanDB, an open database of the values filament makers publish.

Freshness

The catalog was last rebuilt on October 16, 2026. Each rebuild re-reads every source, so parts a store stops selling drop off and new printers appear.

Something wrong?

Use the report form on any printer page, or email contact@3dprinterfits.com. Makers and stores can ask us to add or correct their listings the same way.

Who runs it

3D Printer Fits is built and operated by Jackalope Digital, LLC. We are independent of every printer maker and store listed here; see the affiliate disclosure for how the site is paid.