Cüneyt Aytaç, Chief Technical Officer (CTO) of GTOT Technology, which operates within the TTAF group of companies, said in his statement that they operate in the field of metal additive manufacturing.

Stating that they aim to fill a large gap in this sector in Turkey, Aytaç explained that they are working to develop domestic machines and additional equipment in the field of metal additive manufacturing, which will be used in areas such as the defense industry and the Automotive industry is needed to develop from scratch and biomedically.

Aytaç pointed out that they have been working in this area for about two and a half years and emphasized that their goal is to bring technologies that are openly or secretly embargoed to the country.

In this regard, Aytaç stated that they have started developing the GOLYAT 500 SLM-IB large-format 3D metal printer machine, which can produce parts by applying metal powder to a surface and applying laser beams to it using SLM (Selective Laser Melting ). technology and said:

“The most important feature of this technology is that it consists of machines and equipment that can process all kinds of parts that you dream of in parts production, many metals and metal alloys such as titanium, copper, aluminum, steel, Inconel (a nickel Superalloy based on superalloys). First of all, the Federal Office of Economics and Export Control (BAFA) “We have started using large 3D metal printing machines installed in 3D metal printers. Because small machines can be imported into Turkey and used there on a large scale. However, in the dental and automotive sectors, classes that can produce parts with a diameter of 500 millimeters and more are subject to special permits from the countries.


Parts produced in 16 months

Aytaç explained that producing a large-scale metal 3D printer machine is a very laborious and long path and requires a lot of work, technology, finance and patience:


“We made the first design decision 2.5 years ago. The design phase lasted about 14 months. After the first design phase, we made our first partial samples from Styrofoam and evaluated the results with our team. We revised the identified wishes and deficiencies.” in Styrofoam and began with the metal processing phase. It’s been a big job for about 16 months. We manufacture the parts of the full-scale 3D metal printer machine.


There are 3 main modules in the 3D metal printer machine. The weight of a module is approx. 2.5 tonnes, excluding dust and storage areas. When we looked at the system, we started by developing an 11-ton giant. The length of the 3D metal printer machine is 5 meters, the width is 2 meters and the height is 4.5 meters. First we start with a 1000 watt laser. Then we will increase to 4000 watt laser. Within this facility we have the ability to produce parts in any desired alloy with a diameter of 500 millimeters and a height of 1000 millimeters.


We didn’t stop there but developed a system called adaptive cylinder system, which doesn’t exist in the world yet as high volume parts will not always be available in the industry. With this system we are also introducing a methodology to produce smaller parts, more and in mass production. We have submitted our patent application for this. We also designed a mass production campaign in which we created production islands with a diameter of over 500 millimeters on our 3D metal printer machine, which can be dismantled in a short time, new panels placed and production continued. In this context, our 3D metal printer machine will have a structure that enables mass production of small parts in the defense industry, automotive industry and biomedicine.”


Products that can be removed from the machine

Pointing out that the cost of metal powder used in such machines worldwide is very high, Cüneyt Aytaç continued as follows:


“In one of the metal powder producing countries the price per kilogram of titanium powder is $245, in the other it is $135. The metal powder storage capacity of the 3D metal printer machine is 3 tons of titanium. When you hit the numbers, huge numbers come out. Since metal powder is the crucial component here, we have made significant progress in this regard. “With the production of our 3D metal printer machine, we have started producing metal powders and high entropy alloys. “Our goal is to protect our country from foreign dependence in this regard.”

Aytaç said that using a 3D metal printing machine, they can produce heavy weapons parts for the defense industry, casing parts for helicopter engines, parts called fins or blades used in jet turbine engines and many other similar parts.

Aytaç pointed out that many orthopedic implants that are inserted into the body in the medical field can be made with a 3D metal printer machine, and explained that it is possible to produce any imaginable material in the automotive field.


I’m counting down the days until my first laser shot

Aytaç provided information about the next roadmap and said: “Our goal is to produce the first part on October 29th. We will start the mechanical assembly of the 3D metal printer machine from next month. We therefore went through a somewhat laborious production process.” contains quite heavy parts. It’s a large metal 3D printing machine.” “We’re putting it out there to do great things. Hopefully we will be firing lasers on October 29,” he said.

Cüneyt Aytaç emphasized that the most important feature of such 3D metal printers abroad is that their parameters are closed and do not allow changes in the process. Aytaç noted that they were worried about this situation and that they left the parameters on their machines open and users could make any changes they wanted.


Türkiye will be one of the few producers

Aytaç pointed out that there are few manufacturers in this area and continued his words as follows:


“There are three countries in the world that produce metal 3D printers on this scale: the USA, Germany and China. These countries are incredibly adamant about moving large metal 3D printers to Turkey for strategic reasons. In addition, these countries do not accept the metal 3D printers they produce. They compulsorily supply metal powder compatible with the machines along with the machine. This is why you need to use the metal powder that is compatible with the 3D metal printer machine they make. On the other hand, it happened that you bought the 3D metal printer from the corresponding country, for some reason it did not meet your metal powder requirements or did not ship it. Now your 3D metal printer is in the scrapyard.


It’s no use at all. To eliminate such problems, we also carry out very serious work in the field of metal powder production. “Our goal is to completely eliminate dependence on foreign countries by producing metal powder in all alloys that we have identified with our 3D metal printer machine and with our 3D metal printer machines we will produce to meet the prototype and mass production requirements to do justice to, to offer added value to many industries in our country.”

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