Rapid 3DShield Tungsten Filament

Rapid 3DShield Tungsten Filament | Radiation Shielding

$716.99

SKU FTU175500G

Good for

Metal & Sinter →

Size 1.75mm 2.85mm Pellets

Weight 0.5kg 1kg 3kg (Ships in ~3 weeks) 5kg (Ships in ~3 weeks)

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Easy Returns 30 days from delivery
Ships in 48 Hours Dispatched within 48 hours of your order

Rapid 3DShield Tungsten is a printable, non-toxic alternative to lead for radiation shielding. At 93.6% tungsten it is used straight off the printer in its green state: no debinding and no sintering.

Specifications

Tungsten content: 93.6% ± 1.1%
Filament density: 8.00–9.20 g/cc
Formats: 1.75mm and 2.85mm spools in 0.5kg to 5kg, and pellets (pick in the variant selector; 3kg and 5kg ship in about 3 weeks)
Nozzle: 0.8mm hardened steel, standard flow

Printing

Prints similar to PLA with minimal to no warping
Feed the filament straight into the extruder
Do not dry it: drying degrades the binder
To confirm you are getting full density, print the manufacturer's test model: it should weigh 5.5 g or more

Why it matters

Custom geometries that are impossible to machine from solid tungsten can be printed to fit your source, detector or housing, without handling lead.

Prefer to pair it with copper? See the Shielding Combo.

About this product

Can I sinter Rapid 3DShield Tungsten?

No. Tungsten sinters at about 2734C (4953F), beyond most furnaces. It is meant to be used as printed, and all its radiation data comes from green-state testing.

How does it compare with lead shielding?

Solid tungsten (19.3 g/cc) is denser than lead (11.3 g/cc), but printed Rapid 3DShield Tungsten is 7.8-9.2 g/cc, so a printed wall needs somewhat more thickness than solid lead for the same attenuation. In exchange it is lead-free and printable in any shape.

Which nozzle does it need, and how do I check density?

A 0.8mm hardened steel standard-flow nozzle. To confirm you are getting full density, print The Virtual Foundry's test model: it should weigh 5.5 g or more.

Will it print on my printer?

Filamet works on nearly all open-architecture FFF/FDM printers. Swap in a hardened steel nozzle (the size is in the specifications above) and print it like PLA. Not sure about your model? Email us the printer name and we'll check before you buy.

Filament questions

Ordering & Shipping

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.

Payments & Billing

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.

Returns & Refunds

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.

Support

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.