M300 Tool Steel Filamet™ | Sinterable Tool Steel Filament
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M300 Tool Steel Filamet™ gives you hard, wear-resistant tool-grade steel parts from an open-architecture FFF/FDM printer, in shapes that normally need expensive machining or casting. It prints like PLA and sinters to 90–95% of solid M300 density.
M300 parts cannot be handled in their brown (debound) state. Take extra care during debinding and follow The Virtual Foundry's debinding and sintering guide. Use a crucible rated for M300, such as the Refractory Cement Crucible, and a kiln such as the FireX, with Sintering Carbon.
Prefer a bundle? See the M300 Print and Sinter Kit.
This item ships within 48 hours of your order, directly from the brand, and shipping is free. You will get a tracking number by email as soon as it is on its way.
We accept all major credit cards, Shop Pay, and the accelerated checkout options shown at the top of the cart. Your card is charged when the order is placed.
Need to change or cancel an order? Email us right away and we'll do our best to help before it ships.
Unused parts can be returned within 30 days in their original packaging. A flat $4.99 return shipping fee applies — email us first and we'll send return instructions.
Received the wrong item or something arrived defective? Contact us right away and we'll make it right with a replacement or full refund, no return fee in that case. Full details on our return policy page.
A real person answers our support email — not a bot. If a part arrives faulty or doesn't fit as described, tell us what happened and we'll make it right.
