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BCN3D Sigma D25 3D printer

SKU: 3601000003

Price: £ 3778.8 (£3149.00 + £629.8 VAT)

BCN3D Sigma D25 is a professional dual extruder 3D printer using an innovative hotend system to give unparalleled efficient, high precision, 3D printing

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The BCN3D Sigma D25 is the latest re-imagining of the highly acclaimed BCN3D sigma series. The Sigma D25 features the same independent dual extruder system but with a greatly increased build volume to an impressive 42 x 30 x 20 cm.

The D25 has been designed for professionals. The with its IDEX system, multiple print mode options, large build size and hassle-free workflow it is designed to allow you to speedily manage any design or build project from start to finish.

The BCN3D Sigma in the office


Sigma D25 features

Independent dual extruder technology (IDEX system)

The advantages of a dual extruder are not limited to simply printing in 2 different colours on the same model. The great advantage of Independent extruders is that you can print multiple versions of the same model at the same time.

  • Duplication Mode – Print identical models simultaneously. You can double up the number of models you print at the same time, halving your print time.
  • Mirror Mode – Print left and right hand versions of an object at the same time
  • Soluble support Mode – If you have a complex model you can use a soluble infill material on one head to add washable support structures to your print
  • Multimaterial Mode – Combine different material properties within the same print, add flexible sections for example by using a TPU filament

Professional grade extruders

The D25 utilises  hotends  optimised by e3D and are powered by Bondtech extruders. BCN3D partnered with e3D to utilise their know how in the design and development of high performance hotends to produce the range of sigma e3D hotends. The new e3D hotends are also backward compatible with the previous version of the Sigma. With the Sigma full metal hotends you can print any material you need to fit your requirements, from common PLA to the most advanced technical plastics like Nylon or PC, independent of the filament manufacturer.

The Extruder drive system features BondTech dual drive technology to give greater control and superior performance of the extrusion process. The extruder is made with a aluminum CNC machined body and hardened steel drive gears powered by Bondtech. It provides an incredible grip thanks to its high-tech dual drive gears that have proved to be the best feeding extrusion system, getting rid of grinding issues, no matter the filament used.

The Sigma also features a filament run out sensor to helping you manage your printing.

IDEX swappable Hotends

The IDEX system uses a series of swappable hotends with different nozzle diameters and nozzle characteristics. This means you can select the right hotend for the job, saving both time and money, making your 3D printing workflow more efficient. For example you can print your perimeters with a 0.3mm hotend and the infill with a 0.8mm hotend, or, print your model with 0.8mm and detailed PVA supports with 0.4mm. Print up to three times faster without giving up quality: finer outlines and coarser infills.

the sigma R19 uses e3d optimised swappable hotends

BCN3D Sigma IDEX hotends come in:

  • 0.3mm

  • 0.4mm

  • 0.5mm - Hardened Stainless Steel, ideal for carbon fibre filament like ColorFabb XT CF-20

  • 0.6mm

  • 0.8mm

  • 1.0mm

BCN3D hotends are available as either the Idex Hotend Family Pack or buy your BCNozzle Hotend separately. Or follow the link for a full listing of our BCN3D 3D printer products.

Heated Bed

The aluminium heated build plate with its silicone thermal pad help to distribute heat evenly throughout the print chamber, reducing environmental fluctuations that can lead to warping and reduced print quality.

The firmware algorithm used to for automatic bed leveling have also been refined to improve the accuracy of the level adjustment making bed leveling even more precise.

Build Quality

In general BCN3D machines are well known for their build quality, which is why they are such a work-horse of the 3D printing world. The D25 features a number of enhancements on it’s predecessors. It has had the extrusion system repositioned to the rear of the printer to improve heat dissipation. Both the X and Z axis have been reinforced. The X axis is now made from Stainless steel.

It is of a strong robust design that helps to reduce both the effects of vibration on the print quality and also reduces noise.

Sigma  dual extrusion 3D Printer Resources

BCN3D Sigma D25 User Guide

User Guide

BCN3D Sigma specifications

  • Weight & dimensions

    • dimensions: 69 x 53 x 55 cm (including cables)
    • weight: 30kg (without filament spool)
  • Print properties

    • Technology: FDM
    • Print heads: IDEX Dual Extruder
    • Extruder: Bondtech with E3D hotends
    • Print Modes: Single, Duplication mode, Mirror Mode, Multi-material Mode, Soluble Support Mode
    • Maximum creation size: 42 x 30 x 20 cm
    • Nozzle diameter: 0.4mm (standard) & 0.3mm, 0.5mm, 0.6mm, 0.8mm, 1.0mm
    • Compatible material: PLA, ABS, PVA, TPU, HIPS, Specials
    • Filament diameter: 2.85mm
    • Max Printing temperature: 300°C
    • Heated Print surface: yes (max. temp 80°C)
    • Positioning Resolution (x/y/z): 12.5 µm (0.0125mm) / 12.5 µm (0.0125mm) / 1 µm (0.001mm)
    • Layer thickness: 0.05 – 0.5mm (depending upon nozzle diameter)
    • Touch Screen: 5″ full colour
  • Connectivity

    • Wired: SD card also WiFi, Ethernet (through BCN3D Cloud)
  • Software

    • Description: Cura-BCN3D
    • File Types: STL, .OBJ, .AMF, .3MF
    • System Requirements: Windows, Mac or Liinux
  • Warranty

    • 1 year Manufacturers Warranty

Additional information

Weight 38 kg
Dimensions 80 × 60 × 73 cm

Printer resolution


Filament Diameter

Print heads

File Type

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Nozzle Diameter

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Enclosed Print Area

Heated Bed




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UK Shipping

  1. Free UK Mainland Shipping on orders over £100 (incl. VAT); Free Highlands & Channel Islands on orders over £100 (incl. VAT).
  2. Free UK shipping on 3D printer filament samples.
  3. £5.40 (incl. VAT) flat rate for all UK Mainland orders under £100 (incl. VAT); Flat rate of £15.00 (incl. VAT) on Highlands & Channel Islands on orders below £100 (incl. VAT).

Orders over 2kg in weight are shipped via DHL Express orders under 2kg are shipped via Royal Mail 48hrs Tracked. The advantage of flat rate Postage and Packaging to our customers are that if you order 1, 2, 3, 4 or 5 spools of filament the price is the same. p.s. Were sorry about the Highland & Islands shipping costs, it’s a reflection on the increased shipping charges we have to pay.

International Shipping

We do ship internationally but ask if you can contact us to arrange an order as shipping costs can vary greatly depending upon destination and weight. Please see or International orders page for more information.

Returns & Refunds

Firstly, if you want to return a product or you have a faulty product please get in touch as soon as possible! To prevent ordering incorrect items, if you are unsure just ask and we can offer some guidance. However, bear in mind that we cannot say whether a particular product will be right for the purpose that you intend to use it for. You can return your goods to iDig3Dprinting for any reason within 14 business days following receipt at your delivery address as long as they are in a re-saleable condition. Filaments & resins cannot be returned once opened as once exposed to air these items perish. Downloadable goods and 3D print samples cannot be returned and no refund will be issued. Shipping costs of returned items are paid by the customer A full refund will be issued for unopened items that are returned in their original packaging that are in a "as new" re-saleable condition minus additional costs that are incurred by iDig3Dprinting like payment processing fees, custom duties or charges. We are afraid we cannot issue refunds for products that have been defaced, altered, used, or damaged in any way. All requests for refunds are subject to inspection by iDig3DPrinting of the returned item. We are not a charity or a lending library. Refunds and returns for faulty items works a bit differently. Faulty goods can be accepted for return upto 60 days from receipt of the goods (However we prefer to offer diagnostics and repair solutions prior to an actual return, its better for the environment). After this time you will need to contact the Manufacturer. A repair or replacement will be issued for faulty goods once they have passed inspection and been found by iDig3Dprinting to be faulty. This is a brief account of our returns policy. For the full terms please see our Terms and conditions page. Content on the Terms and Conditions page supersedes this content.

How to raise a return request

  • email idig3dprinting at and we will issue a Return Authorization Number (RAN).
  • send the goods back in their original packaging.
  • Once we receive the goods back we will then check them and if everything is as it should be be will issue a refund.
  • If appropriate Refunded payments will then be issued using the original payment option. The time it takes to land in your bank account is determined by the payment gateway used not us.

The main thing is please communicate with us. We are not omnipotent! We can be quite flexible but this is built upon a foundation of mutual respect between our customers and iDig3Dprinting.

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Fantastic service. Goods received within 24 hours of placing order. Will be purchasing more stuff. Would definitely recommend.
Great service, very quick to answer queries and resolve any problems. Reliable and affordable.
First class service and support, purchased some spare parts for my printer and they were glad to help with an unrelated problem I was having with the printer, even though it was not supplied by iDig , I would recommend them without hesitation.
Have had a lot a of problems setting up a 3d printer at our school, idig3d printing contacted me through a forum and have been brilliant ,giving advice and guidance. Thank you