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Single-spool filament, ranked by £/kg — on offer now, page 7

One spool per listing, with bundles and multipacks left out. Bundles take the top of any ranking by cost per kilogram, so this is the list to use when you want the cheapest single spool: to try a brand, to match a colour, or for a first order. Pick a weight below to compare like with like.

670 currently discounted.

Product	Material	Weight	Rating	Price	Per kg	Deal
Polymaker PolySonic High Speed PLA PRO - 1 kg - Black	PLA	1 kg	★★★★½ 4.7 out of 5 (98 Amazon ratings)	£23.07	£23.07	43% below
YUANEANG Rainbow PLA 3D Printer Filament, 1KG Spool(2.2lbs) 1.75mm 3D Printing	PLA	1 kg	★★★★☆ 4.1 out of 5 (472 Amazon ratings)	£23.22	£23.22	—
Stronghero3D PLA 3D Printer Filament 1.75mm Vertigo Galaxy Rainbow Multicolors	PLA	1 kg	★★★★☆ 4.2 out of 5 (3,557 Amazon ratings)	£23.43	£23.43	—
AMOLEN Silk PLA 3D Printer Filament, Shiny Multicolor Nebula Ribbon Rainbow PL	PLA	1 kg	★★★½☆ 3.7 out of 5 (8 Amazon ratings)	£23.48	£23.48	48% below
extrudr PLA NX2 Matte 1.75 mm 1 kg Yellow	PLA	1 kg	★★★★½ 4.4 out of 5 (117 Amazon ratings)	£23.50	£23.50	10% below
ERYONE TPU Filament 1.75mm, 3D Printer Filament,Flexible 95A TPU, +/-0.03mm, 0	TPU	0.5 kg	★★★★½ 4.5 out of 5 (2,364 Amazon ratings)	£11.75	£23.50	Warehouse · 30% under new
IEMAI PETG Filament 1.75mm 1KG, Pink PETG 3D Printer Filament, Compatible with	PETG	1 kg	★★★★½ 4.5 out of 5 (30 Amazon ratings)	£23.63	£23.63	—
Kingroon High Speed PLA 3D Printer Filament 1.75mm, 3D Printer Rapid Filament	PLA	1 kg	★★★★½ 4.6 out of 5 (219 Amazon ratings)	£23.70	£23.70	33% below
JUSTMAKER PETG Glass Fiber 3D Printer Filament, Updated Stronger Impact Resist	PETG	1 kg	★★★★☆ 4.0 out of 5 (70 Amazon ratings)	£23.70	£23.70	48% below
TINMORRY PLA Filament 1.75 mm for 3D Printers, 1 kg, Matt White	PLA	1 kg	★★★★½ 4.6 out of 5 (139 Amazon ratings)	£23.77	£23.77	9% below
Carbon Fiber Polypropylene Filament 1.75mm, No Warping & Moisture Free Filamen	PP	0.7 kg	★★★★½ 4.4 out of 5 (10 Amazon ratings)	£16.72	£23.89	Warehouse
HATCHBOX 1.75mm Cool Gray PLA 3D Printer Filament, 1 KG Spool, Dimensional Acc	PLA	1 kg	★★★★½ 4.6 out of 5 (39,444 Amazon ratings)	£24.00	£24.00	—
GIANTARM PLA Filament 1.75 mm Skin Colour, 3D Printer Filament PLA, Accuracy +	PLA	1 kg	★★★★½ 4.3 out of 5 (24 Amazon ratings)	£24.04	£24.04	7% below
TINMORRY PLA Filament 1.75 mm for 3D Printers, 1 kg, Matt Black	PLA	1 kg	★★★★½ 4.6 out of 5 (139 Amazon ratings)	£24.15	£24.15	5% below
AMOLEN 3D Printer Filament Trip-Color Silk PLA Filament 1.75mm,Black Blue Purp	PLA	1 kg	★★★★½ 4.7 out of 5 (66 Amazon ratings)	£24.16	£24.16	48% below
colorFabb PLA High Speed Pro Iron Grey 3D Print Filament,1.75mm,1000g	PLA	1 kg	—	£24.26	£24.26	42% below
SUNLU Easy PA Filament 1.75mm 1KG, Nylon 6+66 3D Printer Filament, Polyamide (	Nylon	1 kg	★★★★½ 4.4 out of 5 (31 Amazon ratings)	£24.30	£24.30	Warehouse · 2% under new
AMOLEN Silk PLA 3D Printer Filament, Shiny Multicolor Kingfisher Rainbow PLA F	PLA	1 kg	★★★★½ 4.4 out of 5 (211 Amazon ratings)	£24.32	£24.32	47% below
iBOSS Gradient PLA Plus 3D Printer Filament 1.75 +/- 0.02 mm, 1 kg Spool (2.2	PLA+	1 kg	★★★★☆ 4.0 out of 5 (21 Amazon ratings)	£24.36	£24.36	5% below
OVERTURE PLA Filament 1.75mm, Polylactic Acid 3D Printer Filament, 4kg Cardboa	PLA	4 kg	★★★★½ 4.3 out of 5 (128 Amazon ratings)	£97.43	£24.36	—
GIANTARM Matte PLA Filament, 1.75 mm Filament for 3D Printers, 1 kg Spool, Mat	PLA	1 kg	★★★★½ 4.3 out of 5 (230 Amazon ratings)	£24.47	£24.47	8% below
GIANTARM PLA Silk Filament 1.75 mm, 3D Printer Filament, PLA 1 kg Spool, Diame	PLA	1 kg	★★★★½ 4.6 out of 5 (71 Amazon ratings)	£24.48	£24.48	5% below
SainSmart TPU Filament 1.75mm, Upgrade 1KG (2.2 lbs) 95A Flexible TPU, ±0.05mm	TPU	1 kg	★★★★½ 4.6 out of 5 (35 Amazon ratings)	£24.48	£24.48	13% below
TINMORRY PLA Filament 1.75 mm, Fast PLA 3D Printing Filament, Compatible with	PLA	1 kg	—	£24.54	£24.54	9% below
TINMORRY PLA Filament 1.75 mm, Fast PLA 3D Printing Filament, Compatible with	PLA	1 kg	—	£24.59	£24.59	—
TINMORRY PLA Filament 1.75 mm, Fast PLA 3D Printing Filament, Compatible with	PLA	1 kg	—	£24.72	£24.72	—
GIANTARM PLA Filament 1.75 mm, Less Stretching Good Layer Adhesion High Tenaci	PLA	1 kg	★★★★☆ 3.9 out of 5 (4 Amazon ratings)	£24.76	£24.76	—
Semdon 3D Printer Filament PLA Silk 1kg 1.75mm Rainbow Candy	PLA	1 kg	★★★★½ 4.6 out of 5 (21 Amazon ratings)	£24.77	£24.77	41% below
PETG Filament 1.75mm 1kg, TINMORRY 3D Printer Filament PETG-Eco Tangle-Free 3D	PETG	1 kg	★★★★½ 4.5 out of 5 (53 Amazon ratings)	£24.79	£24.79	10% below
AMOLEN Silk PLA 3D Printer Filament, Dual Color Black Silver PLA 1.75mm, Shiny	PLA	1 kg	★★★★☆ 4.1 out of 5 (22 Amazon ratings)	£24.79	£24.79	47% below
TINMORRY PLA Filament 1.75 mm, Fast PLA 3D Printing Filament, Compatible with	PLA	1 kg	—	£24.85	£24.85	—
AMOLEN PLA 3D Printer Filament PLA Filament 1.75mm,Color Change Multicolor Fil	PLA	1 kg	★★★★½ 4.4 out of 5 (159 Amazon ratings)	£24.98	£24.98	47% below
Winkle PLA HD Filament 1.75 mm Devil Red, 1 kg Spool, 3D Printer Filament	PLA	1 kg	★★★★☆ 4.2 out of 5 (203 Amazon ratings)	£24.99	£24.99	—
Ultra Silk+ PLA Filament 1.75 mm, TINMORRY 3D Printer Filament, 1 kg, 1 Spool,	PLA	1 kg	★★★★½ 4.7 out of 5 (89 Amazon ratings)	£25.01	£25.01	8% below
iBOSS PLA+ Filament 1.75 mm Black 1 kg, PLA Plus 3D Printer Filament	PLA+	1 kg	★★★★½ 4.4 out of 5 (779 Amazon ratings)	£25.08	£25.08	—
iBOSS Silk PLA Filament 1.75 mm Two-Tone Black/Gold High Gloss Coextruded 3D P	PLA	1 kg	★★★★½ 4.5 out of 5 (18 Amazon ratings)	£25.15	£25.20	10% below
GIANTARM PLA Filament 1.75 mm Blue, 3D Printer Filament PLA, Dimensional Accur	PLA	1 kg	★★★★½ 4.3 out of 5 (24 Amazon ratings)	£25.27	£25.27	7% below
Winkle Petg Filament 1.75mm Jet Black 3D Printing Filament 1000kg Spool	PETG	1 kg	★★★★☆ 4.0 out of 5 (57 Amazon ratings)	£25.30	£25.30	—
iBOSS Tri-color PLA+ Silk Filament 1.75mm 3D Printer Filament PLA Plus+/-0.02m	PLA+	1 kg	★★★★½ 4.3 out of 5 (10 Amazon ratings)	£25.39	£25.39	8% below
Winkle PLA Filament | PLA 1.75 mm | 3D Printer Filament | Fluorescent Pink | 1	PLA	1 kg	★★★★☆ 4.2 out of 5 (530 Amazon ratings)	£25.42	£25.42	8% below
IEMAI PETG Filament 1.75 mm, 3D Printer Filament PETG, Flash Point Transparent	PETG	1 kg	★★★★½ 4.3 out of 5 (25 Amazon ratings)	£25.50	£25.50	—
Filament TPU (Thermoplastic Polyurethane) 1.75 mm, TINMORRY 3D Printing Materi	TPU	1 kg	★★★★½ 4.7 out of 5 (16 Amazon ratings)	£25.54	£25.54	12% below
iBOSS Silk PLA Filament 1.75 mm Two-Tone Red Gold High Gloss Coextruded 3D Pri	PLA	1 kg	★★★★½ 4.4 out of 5 (13 Amazon ratings)	£25.59	£25.64	—
Bambu Lab 3D Printer Filament, PLA Basic 1.75mm, Precise Diameter +/- 0.02mm,	PLA	1 kg	★★★★½ 4.4 out of 5 (79 Amazon ratings)	£25.71	£25.71	Warehouse
TINMORRY PLA Filament 1.75 mm for 3D Printers, 1 kg, Matte Skin	PLA	1 kg	★★★★½ 4.6 out of 5 (139 Amazon ratings)	£25.74	£25.74	6% below
Filament TPU 1.75 mm, TINMORRY TPU Filament 3D Printing Materials for 3D Print	TPU	1 kg	★★★★½ 4.3 out of 5 (54 Amazon ratings)	£25.84	£25.84	13% below
TINMORRY TPU 95A Filament 1.75 mm for 3D Printers, 1 kg, Transparent Green	TPU	1 kg	★★★★★ 4.8 out of 5 (12 Amazon ratings)	£25.91	£25.91	13% below
Creality PETG Filament Refill Filament for 3D Printers, 1 kg 1.75 mm (2.2 lb)	PETG	1 kg	★★★★☆ 4.1 out of 5 (193 Amazon ratings)	£25.92	£25.92	—
Bambu Lab PLA Matte 3D Printer Filament 1.75mm RFID 1kg, Ivory White-Refill	PLA	1 kg	★★★★½ 4.5 out of 5 (99 Amazon ratings)	£25.93	£25.93	10% below
Bambu Lab PLA Matte 3D Printer Filament 1.75mm RFID 1kg with Spool, Marine Blu	PLA	1 kg	★★★★½ 4.7 out of 5 (506 Amazon ratings)	£25.97	£25.97	45% below
kexcelled Silk PLA Filament 1.75 mm +/- 0.03 mm, 3D Printer Filament, Shiny Gl	PLA	1 kg	★★★★½ 4.6 out of 5 (1,002 Amazon ratings)	£25.97	£25.97	—
Inslogic Pre-Dried ABS-GF Filament 1.75mm, Natural White, 1KG	ABS	1 kg	★★★★★ 5.0 out of 5 (4 Amazon ratings)	£25.99	£25.99	—
ugee PLA Filament 1.75mm for 3D Printer, 1kg/2.2lb Single Spool, White	PLA	1 kg	★★★★★ 5.0 out of 5 (2 Amazon ratings)	£25.99	£25.99	—
Winkle PLA Filament | PLA 2.85 mm | Printing Filament | 3D Printer | 3D Filame	PLA	1 kg	★★★★☆ 4.1 out of 5 (146 Amazon ratings)	£26.03	£26.03	—
IEMAI ASA Filament 1.75mm 1KG, Camel ASA 3D Printer Filament, Heat & Weather R	ASA	1 kg	★★★★½ 4.3 out of 5 (157 Amazon ratings)	£26.27	£26.27	—
iBOSS PETG Filament 1.75 mm Rainbow, Colour Gradient 3D Printer Filament, 1 kg	PETG	1 kg	—	£26.55	£26.55	—
Winkle Petg Filament 2.85mm Clear 3D Printing Filament 1000kg Spool	PETG	1 kg	★★★★½ 4.5 out of 5 (37 Amazon ratings)	£26.56	£26.56	—
GIANTARM PETG Filament 1.75 mm Grey for 3D Printers 1 kg Spool	PETG	1 kg	★★★★½ 4.4 out of 5 (42 Amazon ratings)	£26.58	£26.58	—
HATCHBOX PLA MAX V2 Black 3D Printer Filament Made in The USA, 1.75mm Diameter	PLA	1 kg	★★★★½ 4.4 out of 5 (190 Amazon ratings)	£26.67	£26.67	44% below
Bambu Lab 3D Printer Filament, PLA Basic 1.75mm, Precise Diameter +/- 0.02mm,	PLA	1 kg	★★★★½ 4.6 out of 5 (36 Amazon ratings)	£26.80	£26.80	20% below

Guides

• Bed adhesion: what actually works
  Glue sticks, hairspray, rafts, brims and expensive surfaces — an honest ranking of what fixes prints coming loose, starting with the free fix that solves most cases.
• Do you need a filament dryer?
  Wet filament is real and ruins prints, but a dedicated dryer is not the only answer. How to tell if moisture is your problem, and what to do about it.
• Filament storage: dry boxes, vacuum bags and desiccant
  Keeping filament dry is cheaper than drying it out. What actually works, what desiccant to use, and why the little sachet in the bag is already spent.
• First layer calibration, properly
  Nearly every adhesion problem and half of all print failures start in the first layer. How to set Z offset by eye, and what a good first layer actually looks like.

Best-selling Filament by year — which actually sold best, going back several years, ranked by sales position rather than opinion.