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Atomic Filament 3.5 kg spool

What are the dimensions of the Atomic Filament 3.5 kg spool? · Modern device · basis: Manufacturer specifications (Atomic Filament)

Also called: Atomic Filament 3.5 kg spool dimensions, Atomic Filament 3.5 kg spool size, Atomic Filament 3.5 kg spool hub hole diameter, Atomic Filament 3.5 kg spool spool holder, Atomic Filament 3.5 kg spool AMS fit, Atomic Filament 3.5 kg spool spool width, Atomic Filament 3.5 kg spool outer diameter, medidas carrete Atomic Filament 3.5 kg spool, Spule Maße Atomic Filament 3.5 kg spool, dimensões carretel At

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

length
304.8 mm
width
304.8 mm
height
95.25 mm

Notes

  • The Atomic Filament 3.5 kg spool measures 304.8 mm across the flanges, 95.25 mm wide, with a 50.8 mm hub hole, as published by Atomic Filament.
  • Atomic lists this spool as 12 × 3.75 in with a 2 in hole without labelling which figure is which; following its 1 kg wording (diameter × thickness), 12 in is taken as the diameter.
  • 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.

Atomic Filament 3.5 kg spool size chart

dimensionvalue
Outer (flange) diameter304.8 mm (12 in)
Width95.25 mm (3.75 in)
Hub hole diameter50.8 mm (2 in)
Published size12 in × 3.75 in × 2 in hole
Empty spool weight936 g
Filament capacity3.5 kg

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Atomic FilamentFAQ - Atomic FilamentwebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

atomic-filament-3-5-kg-spool-spoolSpool envelope Ø304.8 × 95.25 mm with a Ø50.8 mm hub hole (flanges and core not modelled)STEP · STL
Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
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Plain text: sheet.txt · JSON: /api/geometry?object=atomic-filament-3-5-kg-spool

Atomic Filament 3.5 kg spool, isometric render of a generated part
Render of atomic-filament-3-5-kg-spool-spool from the free STEP; not to scale.

Fits with

Filamentive 300–500 g cardboard spool, isometric render of a generated part
Filamentive 300–500 g cardboard spool200×200×40 mm★ 1 file
Filamentive 750 g cardboard spool, isometric render of a generated part
Filamentive 750 g cardboard spool200×200×56 mm★ 1 file
Filamentive 1 kg cardboard spool (narrow, from April 2025), isometric render of a generated part
Filamentive 1 kg cardboard spool (narrow, from April 2025)200×200×68 mm★ 1 file
Filamentive ReFill coil (for Bambu Lab reusable spool), isometric render of a generated part
Filamentive ReFill coil (for Bambu Lab reusable spool)185×185×60 mm★ 1 file

Questions

What size is the Atomic Filament 3.5 kg spool?

304.8 mm outer diameter, 95.25 mm wide, 50.8 mm hub hole (12 × 3.75 in, 2 in hole).

Does the Atomic Filament 3.5 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 304.8 × 95.25 mm this spool is outside that range on paper, so plan on an adapter or an external holder.