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Rainbow & gradient filament, 4 kg, new, rated 4.5 stars and up, ranked by £/kg

Every listing we track on Amazon UK that matches all of these filters, ranked by £/kg. Remove a filter with its "All" chip to widen the list.

Silk, dual colour and gradient filament explained →

2 listings tracked, 1 on offer right now.

Product	Material	Weight	Rating	Price	Per kg	Deal
RAMBERY 4 Colors Matte Rainbow PLA 3D Printer Filament Bundle Fast Color Chang	PLA	4 kg	★★★★★ 4.8 out of 5 (16 Amazon ratings)	£44.59	£11.15	—
RAMBERY 4 Colors Rainbow Silk PLA Filament Bundle Fast Color Change 3D PLA Fil	PLA	4 kg	★★★★½ 4.5 out of 5 (149 Amazon ratings)	£46.34	£11.59	—

Rainbow & gradient filament by brand

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.