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We track 2 SainSmart Support listings, with prices checked every 4 hours and normalized to a true cost per kilogram. Below is every listing, sorted by price per kg.
Support filaments are a category, not one material: water-soluble PVA and BVOH dissolve away cleanly for complex overhangs, HIPS can be dissolved with limonene as a support for ABS, and a PETG-as-interface trick lets plain PLA supports peel away from a PLA print by hand. Which one makes sense depends entirely on what you're printing and what your printer setup can dissolve or peel.
We compare Support filament from 19 brands. Read the full Support guide → Filament Cost Calculator →
SainSmart is a long-standing electronics and maker retailer that also sells 3D printers and a filament range covering PLA, PETG, and other common materials.
SainSmart filament by material:
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