Printer Filament Guide

Best Filament for the Anycubic Kobra 3

Anycubic's open-frame bed-slinger answer to multicolor, with a 300°C hotend and the ACE Pro drying box bolted on.

Last updated: June 2026

The Kobra 3 is an open-frame bed-slinger that punches above its sub-$350 price with a genuine 300°C all-metal hotend, a direct-drive extruder, and 600mm/s top speed backed by input shaping. It's Anycubic's first stab at affordable multicolor: pair it with the ACE Pro four-spool unit (the Combo) and you get four-color prints plus active filament drying. LeviQ 3.0 handles auto-leveling without a manual mesh dance.

What the Anycubic Kobra 3 prints well

Recommended materials for this printer:

PLA PLA+ PETG TPU

No enclosure, so ABS, ASA, PC and nylon will warp and crack. Stick to PLA, PLA+, PETG and TPU for reliable prints. Carbon- and glass-fibre composites also need a hardened nozzle first.

Cheapest filament for the Anycubic Kobra 3 right now
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On filament, the 300°C ceiling is what stands out. PLA, PETG, TPU, ABS and ASA all run fine, and 300°C opens the door to PC and PA blends that 260°C-class machines can't touch. It's an open frame with no chamber heat, though, so ABS/ASA/PC will warp and crack on anything but small parts unless you build an enclosure. The stock nozzle is brass, so carbon-fiber and glass-fiber filaments will chew it out fast.

Anycubic Kobra 3 specs that affect filament

Build volume
250 × 250 × 260 mm
Enclosure
Open frame
Heated chamber
No
Extruder
Direct drive
Max hotend temp
300°C
Stock nozzle
0.4 mm brass, all-metal hotend (tool-less swap)
Abrasive-ready (CF/GF)
Needs hardened nozzle
Multi-material
ACE Pro (sold standalone or as the Combo; 4-spool, dries to 55°C; chain two for 8 colors)

Best for someone who wants multicolor and engineering-temp materials on a budget, prints mostly PLA/PETG, and accepts that high-warp materials need an aftermarket enclosure. If you want abrasive composites or true high-temp printing out of the box, look at the enclosed Kobra S1 instead.

Filament notes for the Anycubic Kobra 3

  • PLA and PETG are the sweet spot: direct drive plus 600mm/s makes it a fast everyday workhorse.
  • TPU prints well thanks to the direct-drive extruder; keep speeds moderate (under ~30mm/s) for soft 95A.
  • 300°C hotend handles PC and PA, but the open frame means warping, so stick to small parts or add an enclosure.
  • ABS/ASA are 'supported' but the lack of a heated chamber causes layer cracking on larger prints; enclose it.
  • Stock brass nozzle is not abrasive-rated, so swap to a hardened steel nozzle before running any CF or GF filament.
  • The ACE Pro (Combo) dries PLA/PETG/TPU up to 55°C while printing, which helps PETG and TPU stringing.
  • Run carbon-fiber/glass-fiber only after the nozzle swap, and expect the brass-to-hardened change to slightly raise temps.
How SpoolHound tracks prices

The deals above are filtered to the materials the Anycubic Kobra 3 handles, aggregated from multiple retailers daily and normalised to cost per kg, so the cheapest in-stock option is always on top. Prices refresh every 24 hours and are region-aware, so switch your region in the nav. Click through to the retailer to confirm the live checkout price.

Frequently Asked Questions

Is the Anycubic Kobra 3 enclosed?
No. It's an open-frame bed-slinger with no enclosure or chamber heat. PLA and PETG are happy in open air, but ABS, ASA and PC will warp or crack unless you add an aftermarket enclosure. For an enclosed alternative in the same family, see the Kobra S1.
Can the Kobra 3 print carbon-fiber or glass-fiber filament?
Only after a nozzle swap. It ships with a brass 0.4mm nozzle, which abrasive CF/GF filaments grind out quickly. Install a hardened steel nozzle first. The 300°C hotend has the temperature headroom for most CF-PETG and CF-PA blends.
What's the difference between the Kobra 3 and the Kobra 3 Combo?
The Combo bundles the ACE Pro, a four-spool unit that enables four-color printing and dries filament to 55°C while you print. The base Kobra 3 prints a single color but can be upgraded with an ACE Pro later, since the unit is interchangeable across Kobra 3 and S1.
How hot does the Kobra 3 hotend get?
300°C max, which is enough for PLA, PETG, TPU, ABS, ASA, and PC/PA blends. The heated bed reaches 110°C. The real limit for high-temp materials isn't the hotend; it's the open frame, which can't hold chamber heat for warp-prone filaments.

Different printer? See filament by printer for the rest of the lineup, or browse cheapest filament by material.