Create real metal parts using any open-architecture FFF/FDM 3D printer—or even a 3D printing pen.
Estimated back in stock - March 2026
Product Specifications
Available Formats:
Spools: 1.75mm and 2.85mm (0.5kg and 1kg)
Pellets: 1kg jars
Filament Density: 3.50g/cc – 3.65g/cc
Metal Content: 85.0% – 88.0% M300 Tool Steel
Industrial Grade Performance
M300 Tool Steel (Maraging Steel) is known for its superior strength, hardness, and resistance to wear. It is an ideal material for high-performance industrial components that require extreme durability after sintering.
Printing Experience
Print with a 0.6mm hardened steel nozzle.
Prints similar to PLA with minimal to no warping.
Works with virtually any open-architecture 3D printer (no proprietary hardware required).
Ensure the filament feeds straight into the extruder.
Important: Less hygroscopic than PLA. Do not dry this filament—drying will degrade the binder.
Sintering & Applications
Fully Sinterable: After printing, your part can be fired in a furnace to become 100% metal. M300 is particularly valued in tool-making and high-stress engineering.
Functional prototyping and tool-making
Wear-resistant industrial parts
Aerospace and automotive research
One-off and short-run manufacturing
Reducing or eliminating tooling and machining costs
All formats print just like PLA on most open-architecture 3D printers. Large orders may be subject to longer lead times.
