# Polymaker 3 kg cardboard spool

> What are the dimensions of the Polymaker 3 kg spool?

- Category: 3D printers & filament › Filament spools
- Kind: Modern device
- Basis: Manufacturer specifications (Polymaker)
- Page: https://xemstudio.com/objects/polymaker-3-kg-cardboard-spool/ · JSON: https://xemstudio.com/api/geometry?object=polymaker-3-kg-cardboard-spool · Plain text: https://xemstudio.com/objects/polymaker-3-kg-cardboard-spool/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 250 | 250 | 117.2 |

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- The Polymaker 3 kg spool measures 250 mm across the flanges, 117.2 mm wide, with a 55 mm hub hole, as published by Polymaker.
- The file is a solid envelope cylinder at the outer diameter and width with the hub hole through it; flange thickness, core diameter, ribs and windows are not modelled.
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.

## Sizes

| dimension | value |
|---|---|
| Outer (flange) diameter | 250 mm (9.84 in) |
| Width | 117.2 mm (4.61 in) |
| Hub hole diameter | 55 mm (2.17 in) |
| Tolerances | Ø 250 ± 1 mm, width 117.2 ± 2 mm, hole 55 ± 1 mm |
| Spool material | Cardboard |
| Empty spool weight | 425 ± 21.3 g |
| Filament capacity | 3 kg |

## Where the files are

- Polymaker: [Polymaker FAQ (spool specifications)](https://wiki.polymaker.com/polymaker-products/about-polymaker/polymaker-faq) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/polymaker-3-kg-cardboard-spool/index.json

- polymaker-3-kg-cardboard-spool-spool: [STEP](https://xemstudio.com/files/hardware/polymaker-3-kg-cardboard-spool/polymaker-3-kg-cardboard-spool-spool.step) · [STL](https://xemstudio.com/files/hardware/polymaker-3-kg-cardboard-spool/polymaker-3-kg-cardboard-spool-spool.stl) — Spool envelope Ø250 × 117.2 mm with a Ø55 mm hub hole (flanges and core not modelled)

## Questions

**What size is the Polymaker 3 kg spool?**

250 mm outer diameter, 117.2 mm wide, 55 mm hub hole (9.84 × 4.61 in, 2.17 in hole).

**Does the Polymaker 3 kg spool fit a Bambu Lab AMS?**

Bambu Lab lists the AMS HT for spools 197–202 mm in diameter and 50–68 mm wide; at 250 × 117.2 mm this spool is outside that range on paper, so plan on an adapter or an external holder.

## Fits with

- [Polymaker 1 kg cardboard spool](https://xemstudio.com/objects/polymaker-1-kg-cardboard-spool/)
- [Filamentive 300–500 g cardboard spool](https://xemstudio.com/objects/filamentive-300-500-g-cardboard-spool/)
- [Filamentive 750 g cardboard spool](https://xemstudio.com/objects/filamentive-750-g-cardboard-spool/)
- [Filamentive 1 kg cardboard spool (narrow, from April 2025)](https://xemstudio.com/objects/filamentive-1-kg-cardboard-spool/)
- [Filamentive ReFill coil (for Bambu Lab reusable spool)](https://xemstudio.com/objects/filamentive-refill-coil/)