Sigma D25 vs Sigma(x) R19

BCN3D Sigma D25 3D printer

Since 2019, the BCN3D company has been introducing many important changes in the design of the Epsilon series models. Many of these improvements are now being made to the Sigma series, mainly in the form of improved reliability and improved user experience.

One of the most important changes noticeable in Sigma D25 is the size of the working field and the printer itself. The new design eliminates the A4 worktable used in the Sigma R19 and replaces it with a more optimal work area of 420 x 300 x 200mm (similar to the Sigmax R19 model). The larger size of the working field allows you to use the potential of the IDEX system.

Sigma D25 is intended by the manufacturer to be a desktop printer that can work with the most frequently used, basic types materials, which are easy and safe to print at home or office. Embracing this assumption eliminated the need for specific components that are needed to support technical and composite materials, e.g. a closed housing. Supported materials in the new Sigma D25 are PLA, TPU, PVA, PET-G.

For customers who need technical and composite materials - the series is the right choice BCN3D Epsilon, which offers much greater opportunities to create high-quality parts from more industrial materials.

Major changes introduced to the Sigma D25 compared to the Sigma(x) R19:

• The work platform and Z-axis mounting- have been redesigned and include several improvements:
• Increased stiffness - More durable thanks to redesigned Z-shaft supports and a lower build platform.

Left: Sigma(x) R19 construction platform. Right: the improved Sigma D25 platform.

• Perfectly flat worktable surface - new, thicker, aluminum platform and worktable clamps instead of magnetic mounting.
• Better heat distribution on the glass surface - thanks to the use of a new silicone thermal pad instead of a PCB heater, elimination of the air gap and a new aluminum platform, the same as in the BCN3D Epsilon series. In the image below you can see the heat distribution with the new platform, with a slight difference of about 2ºC, compared to the 20ºC of the previous Sigmax R19.

• Improved table leveling procedure - with 30 micron adjustment accuracy and more ergonomic adjustment screws.
• Consolidated Parts - Same assembly and platform design as the BCN3D Epsilon series, as well as other elements of the overall architecture.
• Working area - 420 x 300 x 200 mm (25 liters).
• Funkcjonalność:
• Standard materials only - optimized to better support the most frequently used materials: PLA, PETG, TPU and PVA with BCN3D profiles. Still retained the open filament system to allow compatibility with third-party materials.
• Only 0.4 mm and 0.8 mm nozzles - according to statistics, these are the two hotends most frequently used by customers for working with basic materials.
• Maximum table temperature 80ºC - thanks to focusing on basic materials - it was possible to reduce the cost of some components, e.g. the work table compared to the Epsilon series, to meet less demanding standard materials.
• No additions required - thanks to changes in the material offer, it was possible to eliminate the need to use additional elements, such as a housing and a HEPA filter.
• The electronics have been modified to improve stability, functionality and UX to reflect the improvements made to BCN3D Epsilon:
• Larger 5-inch touch screen - for more convenient use, as in the BCN3D Epsilon series.
• Improved Menu UI - More intuitive menus and UX, with multi-language support like in the BCN3D Epsilon series.
• Added connectivity feature - Sigma D25 can now print over the network via WiFi or Ethernet, directly from BCN3D Cura or BCN3D Cloud</b >.
• BCN3D Cloud Integration - the user can now also manage multiple printers, print tasks and view statistics of completed prints.

• Software updates via the network - WiFi and LAN support.
• Optimized calibration process - new software algorithms.
• Cura Software /Printer Firmware - general improvements (mainly performance).
• Extruder system:
• Improved filament loading - the design of the filament sensor has been changed to eliminate problems during the loading process.
• Improved printing profiles - overall profile improvement and significant progress in printing with PLA.
• Easier maintenance - extruders have been moved to the back of the printer for easier maintenance.
• Improved X-axis assembly:
• Reinforced X-axis rail - now made of reinforced stainless steel instead of aluminum, the same as in the BCN3D Epsilon series.

• New motors - Changed to NEMA17 motors instead of NEMA14 which were prone to overheating.
• Estetyka:
• Aluminum frame - thanks to changes in electronics and a reinforced Z axis.
• New light gray look - to stand out from the growing BCN3D product portfolio and create a more unique look for the future of the Sigma line

New BCN3D Sigma D25 3D printer

The BCN3D Sigma D25 3D printer presents significant changes compared to its predecessor - Sigma/x R19, especially with a view to the reliability and repeatability of printed models.