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RepRapper rainbow & gradient filament, ranked by £/kg

Every listing of RepRapper rainbow & gradient filament we track on Amazon UK, ranked by £/kg.

5 listings tracked, 2 on offer right now.

Product	Material	Weight	Rating	Price	Per kg	Deal
Reprapper PLA Filament 1.75mm 1KG – Green/Blue/Rose Red Tri Colour Silk PLA Fi	PLA	1 kg	4.2 out of 5 (1,831 Amazon ratings)	£11.99	£11.99	—
RepRapper Forest Rainbow Silk PLA Filament 1.75mm, Shiny Gradient Multicolor 3	PLA	1 kg	4.2 out of 5 (1,809 Amazon ratings)	£14.99	£14.99	—
RepRapper Glow in The Dark PLA Filament 1.75mm (4×250g) – High-Brightness Lumi	PLA	1 kg	4.2 out of 5 (1,838 Amazon ratings)	£15.29	£15.29	15% below
RepRapper Glow in The Dark PLA Filament 1.75mm (4×250g) – 3D Printer Filament	PLA	1 kg	4.2 out of 5 (1,838 Amazon ratings)	£16.99	£16.99	—
RepRapper Glow in The Dark Rainbow PLA Filament 1.75mm – Phosphorescent Multic	PLA	1 kg	4.2 out of 5 (1,838 Amazon ratings)	£17.84	£17.84	15% below

Rainbow & gradient filament by brand

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.