An STL file describes the surface geometry of a 3D model as a mesh of triangles, and nothing else. It carries no orientation, supports, layer height, colour or material settings, so whoever slices it decides how it prints, and the same STL can print very differently from one bureau to the next.

What is Faithful 3MF Mode?

Faithful 3MF Mode is the Makr3D default for 3MF uploads: we reproduce the plan embedded in your Bambu or Orca project, including plates, orientation, supports, layer height, nozzle and colour mapping, rather than re-slicing a generic mesh. Print Intelligence, our AI pre-production inspector, flags print risk and a human signs off before production; we flag issues and work with you rather than silently changing your settings.

What is Recommended Mode?

Recommended Mode is the fallback for STL uploads, or for when you would rather we optimise. We slice your file against validated farm profiles tuned for our Bambu fleet, so beginners get a reliable result without learning to slice, while advanced users keep full 3MF control.

What is AMS in 3D printing?

AMS stands for Automatic Material System, the multi-spool filament unit made by Bambu Lab. It holds several spools and switches between them during a print, which is how a Bambu printer produces multi-colour parts in a single job. On Makr3D, the colour mapping in your 3MF is treated as intent and matched to approved, stocked filament: up to four colours auto-quote instantly, and five-plus routes to the team for review.

The quality wedge

What you approved in Bambu is what we print.

Most fulfilment platforms re-interpret a generic mesh. Makr3D’s default is Faithful 3MF Mode: we honour the project intent embedded in your Bambu or Orca slice, then a human checks it for print-safety before production.

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STL vs 3MF

The difference between a shape and a plan.

STL and 3MF are the two file formats most 3D-printed products start from. An STL file describes only the surface geometry of a model, a mesh of triangles with no material, colour or print settings. A 3MF file is the newer, richer format: one package carrying the model together with the print plan itself, exactly as you set it up in a slicer such as Bambu Studio or OrcaSlicer. Which one you upload decides who makes the printing decisions: you, or the platform printing it.

An STL is geometry

An STL describes a surface and nothing else. Whoever slices it decides orientation, supports, layer height, colour and profile, so the same file can print very differently from one bureau to the next.

That is fine when you want us to optimise. We slice STL files against validated farm profiles in Recommended Mode.

A 3MF is the plan

A Bambu or Orca 3MF carries the decisions with it: plates, orientation, supports, colour mapping, layer height, nozzle and filament. It is the slice you already dialled in and approved on your own machine.

Makr3D’s default Faithful 3MF Mode reproduces that plan, so production matches your intent rather than a fresh interpretation.

What we honour

Your project intent, carried through.

Plates & orientation

Your plate layout and part orientation come through as you arranged them, the choices that decide strength, surface finish and support placement.

Supports & layer height

Support intent and layer height carry over, so the trade-off you made between detail, speed and cleanup is the one we print.

Colour intent

Multi-colour mapping is treated as intent and matched to approved, stocked filament: instantly auto-quoted up to four colours, with five-plus routed to the team for review.

Nozzle & filament

Nozzle selection and filament mapping feed the quote and dispatch estimate, including the +1 working day for 0.2mm / 0.6mm or PETG.

Faithful, but never blind

Faithful does not mean unchecked. Print Intelligence, our AI pre-production inspector, reasons over your real geometry, overhangs and slice settings to flag print risk, then a human on the team signs off before production. It is a safety check, not a downgrade of your settings; we flag issues and work with you rather than silently re-slicing.

Recommended Mode fallback

No good 3MF, or you would rather we optimise? In Recommended Mode we slice your STL against validated farm profiles tuned for the Bambu fleet, so beginners get a reliable result without learning to slice, while advanced users keep full 3MF control.

Priced fast, kept safe

An instant quote, and your files stay yours.

Instant quote that fails safe

Upload your file and the same production slicer returns a real fulfilment price in seconds, no sales call. If a slice is ever uncertain, it routes to a person rather than guessing, so you are never silently under- or over-quoted.

Your files never leave us

Your production files are never downloadable by any other seller, hard-enforced at the schema, API and legal-terms level. You keep your IP; we only print from it.

Formats and modes

STL, 3MF and AMS, answered plainly

What is an STL file?: An STL file describes the surface geometry of a 3D model as a mesh of triangles, and nothing else. It carries no orientation, supports, layer height, colour or material settings, so whoever slices it decides how it prints, and the same STL can print very differently from one bureau to the next.
What is a 3MF file?: A 3MF file is a single package that carries the model together with the print plan: plates, orientation, supports, colour mapping, layer height, nozzle and filament. A Bambu Studio or OrcaSlicer 3MF is the slice you already dialled in and approved on your own machine.
What is Faithful 3MF Mode?: Faithful 3MF Mode is the Makr3D default for 3MF uploads: we reproduce the plan embedded in your Bambu or Orca project, including plates, orientation, supports, layer height, nozzle and colour mapping, rather than re-slicing a generic mesh. Print Intelligence, our AI pre-production inspector, flags print risk and a human signs off before production; we flag issues and work with you rather than silently changing your settings.
What is Recommended Mode?: Recommended Mode is the fallback for STL uploads, or for when you would rather we optimise. We slice your file against validated farm profiles tuned for our Bambu fleet, so beginners get a reliable result without learning to slice, while advanced users keep full 3MF control.
What is AMS in 3D printing?: AMS stands for Automatic Material System, the multi-spool filament unit made by Bambu Lab. It holds several spools and switches between them during a print, which is how a Bambu printer produces multi-colour parts in a single job. On Makr3D, the colour mapping in your 3MF is treated as intent and matched to approved, stocked filament: up to four colours auto-quote instantly, and five-plus routes to the team for review.

Who actually prints your orders

Makr3D is run by Yorkshire3D, a UK 3D-printing company, from an owned Bambu Lab farm of hundreds of printers in Huddersfield running 500+ plates a day. Every order gets a human quality check before it goes into production, so there is a named, accountable UK company (Yorkshire3D Limited, company no. 15466679) behind every parcel.

The print farm is run by Yorkshire3D. See how production works on the production hub page.

Upload your 3MF and see it honoured.

Get a fulfilment quote that reflects your real slice: plates, colour, nozzle and all.

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Founding sellers get discounted fulfilment for the first 60 to 90 days, free setup on your first three products and founder-led onboarding. No card, no monthly fee, pay only when you have orders.