Reasons to Invest


• The additive manufacturing market is currently valued at $12 billion dollars, and it is rapidly growing at a 27% compounded annual growth rate. By 2029 the additive manufacturing industry is projected to reach a value in excess of $100+ billion dollars

• Metallum3D Inc. has developed patent pending technologies that allow us to offer the fastest, most affordable, sinter based, multi-material additive manufacturing system in the market

• Metallum3D is the first and only company to develop a microwave sintering process suitable for commercial use in additive manufacturing applications


The Problem


Sinter based additive manufacturing is too slow


Sinter based additive manufacturing of metal and ceramic materials is composed of two processes, 3D printing and sintering. During sintering, metal or ceramic particles are fused together to create a solid object. The problem is that sintering takes up approximately 80% of the total processing time which is currently measured in days.

Limited material availability and variety

Sinter based additive manufacturing systems currently available have closed material platforms with a limited number of metal and/or ceramic materials available. Additionally, the 3D printers in these systems are not able to print with other materials such as plastics and flexibles.

High equipment costs


Sinter based additive manufacturing system currently available are priced in from $120K to $400K+. An article titled “Obstacles to the adoption of metal additive manufacturing by small and medium sized enterprises”, written by the principals of Wohlers Associates and published in the Spring 2021 edition of Metal Additive Manufacturing, identified costs as one of the main obstacles in the adoption of metal additive manufacturing technology by small and medium sized enterprises.

The Solution


Metallum3D Additive Manufacturing System

Faster sintering - from days to hours

Our additive manufacturing system uses microwave energy and a granular susceptor material to sinter parts in hours instead of days. Sintering time is reduced by up to 90%. An order of magnitude improvement over existing conventional sintering technology

Open materials platform – multi-material 3D printing


Our additive manufacturing systems uses materials in pellet form. Pelletized materials are the standard in the polymer industry. For plastic and flexible materials there are thousands of exiting suppliers worldwide that supply these materials providing users of our system with an almost unlimited choice of materials. For metal and ceramic materials, Metallum3D has developed a water/gelation material formulation in pellet form that is cost effective, safe to handle and environmentally friendly. In our system, metal and ceramic 3D printed parts go directly from the 3D printer  to the microwave sintering furnace without the need for a debinding step. Our multi-material 3D printing capability delivers an “All-In-One” system

Affordable System Price


Metallum3D is focused on providing our future customers with exceptional value. Our multi-material additive manufacturing system has been engineered to achieve a selling price point of $60K while still providing the company with robust gross margins

How It Works



Microwave Sintering and Granular Susceptor Material

Until now microwave sintering has not been commercially viable due to the

limitations of existing microwave multimode resonant heating technology. This is the same technology currently used in domestic microwave ovens.  When applied to microwave sintering this technology has two major limitations. The first limitation is uneven distribution of microwave energy which results in uneven heat distribution during sintering. The second limitation is a reverse part heating profile where the interior of the part is hotter than the exterior of the part, which also results in uneven heat distribution


After 4 years of research and development work, Metallum3D has developed a new, patent pending non-resonant, microwave sintering process that eliminates the limitations that have previously prevented the commercial use of microwave energy for sintering. Our microwave sintering process uses specially designed non-resonant slotted waveguides and a specially formulated granular susceptor material, in which the parts are embedded during sintering, to evenly distribute and absorb microwave energy resulting in even heat distributions throughout the sintering volume.

The energy distribution of our non-resonant slotted waveguides has been validated using CST Microwave Studio, which is a high-performance electromagnetic simulation software package. The animation below shows a cross section of the microwave energy distribution of our slotted waveguides.

Metallum3D has successfully conducted agglomeration tests on our granular susceptor material resulting in susceptor granules ranging from 3 to 5 mm  in diameter as shown in the image below

Pellet Extrusion


To provide an open materials platform with multi-material capabilities, Metallum3D has developed a patent pending melt pump pellet extruder that accepts material in pellet form. Our extruder combines a zero-compression feed screw with a miniature positive displacement gear pump and three independent heating zones, to precisely control the extrusion and retraction of melted material flowing through the nozzle. This melt pump extruder allows our system to 3D print parts with plastic and flexible materials and to 3D print and microwave sinter parts with metal and ceramic materials. The image below shows a CAD model of our melt pump pellet extruder

Market Opportunity



Multibillion Dollar Industry


The additive manufacturing  industry is projected to surpass $100 billion dollars by 2029

Strong Industry Growth


Over the last 20 years, the compounded annual growth rate (CAGR) of the additive manufacturing industry has exhibited strong growth. This growth is projected to continue over the next decade

New Opportunities


2020 was a challenging year that created new opportunities for additive manufacturing technologies as international supply chain disruptions necessitated localized production capabilities. Decentralized production is one the largest benefits of additive manufacturing.






Metallum3D is actively partnering with companies that need a faster and more

affordable solution for 3D printing with metal, ceramic, plastic and flexible materials


We are excited to partner with Electrawatch, a division of Austal USA to apply our

sinter based additive manufacturing technology to the development of naval



Metallum3D currently has 3 patents pending which cover all the critical aspects of our sinter based additive manufacturing technologies including a new type of microwave sintering process with a specially formulated granular susceptor material and an extrusion device for 3D printing parts with pelletized materials.

Grant Funding

Metallum3D is a recipient of research and development grant funding from the Virginia Center of Innovative Technology. This funding allowed us to build our first microwave sintering furnace prototype which led to the development of our new and innovative non-resonant microwave sintering technology

Accelerators and Raised Capital

Metallum3D is a proud alumnus of 757 Accelerate in Norfolk, VA and Catalyst Accelerator in Charlottesville VA. Both are highly selective accelerator programs that accept 6 companies into their cohorts each year


Since 2017 Metallum3D has raised over $500K in investment capital from the Charlottesville Angel Network, CIT Gap Funds, and private angel investors in Virginia, North Carolina and Nevada.

Market Capture Strategy



Small and medium sized enterprises (SMEs) are the backbone of the U.S

economy and are key contributors to economic growth. To acquire customers,

Metallum3D will establish a domestic and international network of independent

sales representatives and will concentrate its marketing and sales efforts on reaching small and medium enterprises(SMEs) across the following industry sectors

The Competition


Metallum3D is the first and only company to have developed new patent pending

technologies that make microwave sintering commercially possible for sinter based additive manufacturing. We reduce the sintering time from days to hours. An order of magnitude improvement over existing technologies at an affordable price

                                 Metallum3D vs. Competing Technologies


Nelson Zambrana


Nelson is an engineer with a passion for business. He started his career over 25 years ago at Hewlett Packard. He eventually transitioned into the medical device industry where he started to develop and apply additive manufacturing processes. Having seen and experienced firsthand the limitations of current sinter based additive manufacturing technologies, he founded Metallum3D in 2016 to develop the fastest and most affordable sinter based additive manufacturing system in the market

Metallum3D Inc.
Richmond, VA