In the current market, the price of desktop 3D printers is declining. Whether it is fused deposition molding (FDM) technology or light curing technology (SLA or DLP), there are very affordable entry-level devices. But when it comes to selective laser sintering (SLS) technology, the price is basically no less than $5,000.
However, it seems that a 17-year-old 3D printing enthusiast and Instructables user Vulcaman are trying to change the status quo. He is currently developing an SLS 3D printer costing around 400 Euros. Is it a bit unbelievable? And slowly questioned, although this SLS 3D printer is still in the early stages of development, it does not even have a formal name, but Vulcaman has successfully completed the proof of concept, and posted 3D printed on the Instructables website using SLS technology 3D. Object to prove his results.
According to Vulcaman, price and curiosity are the driving force behind his progress. He wrote: "Most of the current SLS 3D printers are very expensive and only suitable for industrial applications. So I built my own printer." It is understood that although this SLS 3D printer is not so mature, it has already It has basic functions, such as it uses a 1W 445nm laser diode, the maximum 3D print size is 8 × 8 × 8 inside, the current test 3D printing speed can reach 60 mm / sec, it is said to reach 300 mm / sec.
The following gear is said to have been printed using the 3D printer, which measures 3 x 3 x 0.5 cm and takes a total of one hour.
And with the tradition of the instructables site, Vulcaman posted a complete tutorial on the project, including a list of all the components and downloadable model files. Most of these components are common on general DIY 3D printers. From Nema17 stepper motors, Aruduino Mega 2560, Raspberry Pi to RAMPs control boards, these are the most common parts of friends who like DIY 3D printers. If you are interested in creating a 3D printer yourself, purchase these. Parts should be an easy task. Click here to enter the tutorial for this SLS 3D printer.
The STL file of the 3D printing unit looks very solid and does not require a support structure when printing. Vulcaman used a black PLA material at the time of the prototype and set it to a layer height of 0.2 mm and a fill rate of 25%, but you can also try other materials (such as ABS) and other print settings.
In addition, the frame of this 3D printer may require a little woodwork. If you have laser cutting or CNC equipment, Vulcaman also provides the corresponding CAD files for you to download.
In addition, Vulcaman gave a detailed description of the assembly process, which is still useful for this complex project, and will not be described here. It is worth mentioning that Vulcaman also made special modifications to the Gprints for printing objects using slic3r (popular 3D printing slicing software) for the necessary powder putters in SLS 3D printing.
As for 3D printed materials , Vulcaman does not use nylon 12, which is common in SLS technology, which he thinks is too expensive. To this end he tried sugar (unsuccessful) and finally chose a black powder called RAL9005 for testing.
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