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Filamet™ comes in both 1.75mm and 2.85mm and print on any FDM/FFF 3D printer that accepts any brand of filament.

Material Load by MassRecommended Nozzle SizeRecommended nozzle materialSinter TemperatureSintering RefractoryDensity (g/cc)Filawarmer Recommended
Aluminum 606165.0 – 68.5%Start with 0.6mm and move to smaller nozzles with practice.Either stainless steel or hardened steel620°C (1148°F) UntestedUntested1.50 – 1.54No
Bronze88.0 – 90.0%885°C (1625°F)AL203, Magnesium Silicate and Sintering Carbon4.29 – 4.50Yes
Copper87.0 – 90.0%1052°C (1925°F)4.50 – 4.70
H13 Tool Steel86.8%Hardened steel1260°C (2300°F)Steel Blend and Sintering Carbon3.56No
High Carbon Iron75.0 – 80.0%0.8mm1300°C (2372°F) UntestedUntested2.75
Inconel® 71882.0 – 85.0%Start with 0.6mm and move to smaller nozzles with practice.1260°C (2300°F)Steel Blend and Sintering Carbon3.23Yes
Pure Iron80.0 – 82.0%1300°C (2372°F) UntestedUntested2.81
SS17-480.0 – 85.0%1232°C (2250°F)Steel Blend and Sintering Carbon3.0
SS316L80.0 – 85.0%1260°C (2300°F)3.5
Tungsten88.0 – 94.0%2200°C (3992°F) UntestedUntested7.8Do not use
Titanium 64-578.0 – 82.0%1350°C (2462°F) Untested2.46Yes
Pyrex® (Borosilicate)66.0 – 72.0%843°C (1550°F)AL203 or Magnesium Silicater1.5No
Amaco 46-D32.0 – 40.0%1232°C (2250°F)Any material that is refractory at the sinter temperature1.44Yes
Amaco White 25-D (Discontinued)40.0%1232°C (2250°F)1.5
Silicon Carbide67.6%1860°C (3380°F) UntestedUntested1.90
Zirconium Silicate64.0 – 69.0%1500°C (2732°F) Untested Any material that is refractory at the sinter temperature2.11

Aluminum’s Oxides pose a challenge in the sintering process and it needs more than just an oxygen-free environment. Aluminum and its alloys can only be effectively sintered in pure nitrogen or in a vacuum. Argon has been used in the past, but can create some bonding issues between particles. There are conditions that aluminum requires depending on the alloy and geometry. Simple aluminum alloys such as 2014 can be sintered in dry nitrogen, but the furnace needs to be tight (-50 dewpoint) and uniform (±1°F) temperature control.
Oxygen is damaging to the metal sintering process. Sintering Carbon is used to combat this. Titanium is extra troublesome because it absorbs oxygen like crazy. It will pull oxygen out of a standard kiln’s insulation. Compounding the issue is titanium’s reactivity in the presence of oxygen and heat. The solution that we understand today is to use an all-metal kiln and a chamber thoroughly flooded with ultra high-purity argon.




The Virtual Foundry can covert nearly any material into 3D printing filament. If you don’t see your preferred material here, contact us to ask about custom material development.


The Virtual Foundry Metal 3D Printer is specifically built and optimized for printing Filamet™. It has a Micro Swiss all metal direct drive hotend and a BL Touch probe for automatic bilinear compensation.

This system allows users to print all of The Virtual Foundry’s 3D printing materials including Ceramics, Bronze, Copper, 316L Stainless Steel, Inconel 718, and Pyrex.

The Virtual Foundry Metal 3D Printer

TVF Metal 3D Printer

Price: $2495*

Printing Technology: Fused Filament Fabrication
Connectivity: USB/SD Card (8GB SD Card included)
Screen: 7” Touchscreen
Extrusion Setup: Direct Drive
Nozzle Diameter: 0.6mm
Filament Diameter: 1.75mm
Nozzle Material: Hardened Steel
Build Plate Material: Powder Coated Spring Steel
Build Area: 220x220x300mm (8.66×8.66×11.81in)
Material Compatibility: Filamet™, PLA, PETG, TPU, and more

Unit Weight: 10.75kg (23.7lbs)
Dimensions: 509x476x570mm (20.04×18.74×22.44in)

Power Requirements: 110-230VAC
Output: 24VDC, 14.6A, 350.4W

*Prices do not include shipping.
Current Lead Time: 3 Weeks


Sinter printed metal and ceramic objects with the click of a button.

These systems allow Partner Innovators to sinter a number of The Virtual Foundry 3D printed materials including Ceramics, Bronze, Copper, 316L Stainless Steel, 17-4PH Stainless Steel, Inconel 718, and more in development!

How it works: 3D Print, Pack, Sinter, Metal! You “pack” the printed part in a Sintering Refractory Ballast and load the part in the Kiln. Select the parameters for sintering, click start and your parts will soon turn to functional metal objects! Follow the sintering instructions included with the kiln to turn your printed parts into metal. This kiln allows for your choice of inert gas or open environment sintering.

The Virtual Foundry Sintering Kiln

Price: $2980*

120v, 12A , 1440w
Max. Temperature: 1288°C / 2350°F
Controller: TAP control, touchscreen. Program and monitor with your phone or computer.
Solid State output
CE : Yes has CE Designation

Sintering Area / Chamber Volume:
7.5″ Width x 7.5″ Depth x 7.5″ Height / 
191mm Width x 191mm Depth x 191mm Height

Kiln Outer Dimensions:
22.25″ Width x 18″ Depth x 21.25″ Height /
565mm Width x 457mm Depth x 540mm Height

Compatible Materials:
Bronze, Copper, Pyrex® (Borosilicate), Amaco 46-D

This Kiln Ships via Freight
Shipping Weight:  50lbs

Current Lead Time: 14 Weeks
*Prices do not include shipping. Contact us for a shipping quote.

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