SainSmart - Lightweight Foaming LW-TPU Filament 1.75mm Matte

Customizable Structural Softness, All from One Filament Spool

Our premium active-foaming LW-TPU gives you complete, hardware-level control over your model's final material hardness—ranging dynamically from 77A to 93A on the Shore scale—simply by altering your hotend printing temperature and extrusion speed. Run your extruder at lower temperatures to produce denser, highly rigid structural elements, or increase the heat to activate the micro-foaming agents for a significantly lighter, softer elastomer. One filament unlocks a spectrum of tactile densities.

Ultra-Lightweight Part Production Without Sacrificing Elasticity

Powered by advanced heat-activated gas expansion technology, this specialized LW-TPU expands up to 172% in physical volume inside the nozzle while maintaining its chemical layer strength and springy elasticity. This internal foaming reaction reduces your final part weight by up to 50% compared to traditional, non-foaming TPU alternatives. In practice, a single 1 kg spool of this high-yield material allows you to output the equivalent physical volume of 2 kg of standard TPU—making it the ideal choice for massive models, drone components, functional wearables, and comfort-focused orthotic designs.

High Energy Resilience That Bounces Back Under Load

Engineered to perform under heavy, repetitive compression cycles, our foaming LW-TPU features a fast rebound rate, quickly springing back to its baseline molded shape after impact. This excellent dampening property makes it highly optimal for custom lifestyle footwear, shock-absorbing sports gear, athletic wristbands, and other mechanical applications where prolonged durability and long-term tactile comfort are paramount.

Premium Smooth Matte, Soft-Touch Surface Finish

Say goodbye to the glossy, plastic-looking layer lines characteristic of traditional flexible filaments. The active gas expansion leaves a stunning, uniform matte surface texture that naturally masks layer transitions and provides an ultra-premium, soft-touch tactile feel. It is perfectly tuned for ergonomic tool grips, custom device protective cases, and consumer electronics meant for direct skin contact.

Purpose-Built for Wearable Tech & Advanced Engineering

From shock-damped athletic protective components and medical orthopedic insoles to industrial handle grips, vibration mounts, lightweight scale-model tires, and prototyping concepts, this active-foaming LW-TPU offers flexible performance at half the weight. It stands as an indispensable tool for independent product developers, aerospace hobbyists, wearable tech designers, and commercial engineering labs alike.