eSUN PLA Filament - 1.75mm Colour Change UV Red Expand

eSUN PLA Filament - 1.75mm Colour Change (UV) Red 0.5kg




0.5kg spools of eSUN 1.75mm Colour Changing Filament, which becomes Red under UV light and then changes back to white in the shade.

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If you’re a fan of PLA filament but have been looking for a truly unique 3D Printer Filament to experiment with, these spools of 1.75mm Colour Change (UV) Red by eSUN are just the answer you’ve been waiting for. These spools have photosensitive particles embedded within the plastic, which become charged and change colour under UV light. This makes for a really interesting plastic to 3D print with, and allows you to make signs that change colour throughout the day, objects that react to UV radiation, or even models that look like they become sunburnt when sitting in the sunlight.

Note: Although it is labelled as red, some customers feel that the colour it becomes is slightly pink, rather than a true red.


Advantages Of PLA

PLA is an ideal type of plastic for beginners, as it is both safer and easier to use than a majority of other plastics. This, however, doesn’t mean it’s not appropriate for advanced projects, as veterans also utilize PLA for a wide variety of applications. What it does mean is that PLA is a great starting point before trying out more difficult plastics like ABS and PETG, as it allows more margin for error, with wider temperature ranges and an easier-to-manage Melt Flow Index. This directly translates to smoother and more stable prints, with very little testing and learning required beforehand.

For basic applications like printing figurines or small objects, PLA also offers a more visually attractive finish and, due to the less malleable nature, offers a shinier, smoother appearance than ABS. The only downfall of PLA is that it has a lower melting point, meaning that it can’t be utilized for printing parts that will be exposed to high temperatures – as it will likely melt, warp or distort. With that said, however, PLA tends to warp less during printing, since the differences in printing and cooling temperatures are less extreme.

Available in a wide range of translucencies and colour saturations, PLA is a great plastic for 3D printing almost any object that will not be exposed to heat. With all of the benefits mentioned above, as well as higher printing speeds and lower layer heights, there is good reason why it’s one of the most popular and commonly available 3D printer materials throughout the world.


eSUN Photochromatic (UV) Red Colour Change PLA  -  Technical Specifications:

  • Plastic Type

– PLA                                                                                 

  • Plastic Colour

– White / Red

  • Plastic Diameter

– 1.75mm

  • Total Weight

– 0.5kg

  • Print Temp (°C)

– 190 to 220

  • Bed Temp (°C)

– 60 to 80

  • Density (g/cm3)

– 1.24

  • Distortion Temp (°C, 0.45MPa)

– 56

  • Melt Flow Index (g/10min)

– 5(190°C/2.16kg)

  • Tensile Strength (MPa)

– 65

  • Elongation at Break (%)

– 8

  • Bending Strength (MPa)

– 97

  • IZOD Impact Strength (kJ/m2)

– 4


Typical Applications for eSUN 1.75mm Colour Change (UV) Red PLA Filament:

These spools of eSUN 1.75mm Red UV Colour Change PLA Filament offer hours of experimentation and fun with its unique colour-changing characteristics. And while the concept of changing colours in UV light may seem simple, the following projects that some customers have done enjoyed may certainly change your mind. These projects include:

  • Creating semi-permanent displays that change under UV light, or only become visible when in direct sunlight or shade.
  • Printing models that get “sunburnt” when left in the sun, adding a touch of fun to what could be a standard print.
  • Making a sundial that changes colours as the sun travels overhead, making it easy to read and far more exciting than a normal sundial.
  • Build a custom UV sensor, that lightens when exposed to UV radiation – which can be particularly useful for projects involving UV-sensitive components.

Of course, the possibilities of this filament are only limited by your imagination, so consider getting yourself a spool or two if you have a great idea you’ve always wanted to try out. Alternatively, if you are looking for a new or unique type of filament to play with, consider visiting our Exotic Filaments category to find out what’s available in the world of unique polymers and plastics.


Colour Red
Special Colour Change
Plastic Type PLA
Plastic Diameter 1.75mm
Plastic Weight 0.5kg

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eSUN PLA Filament - 1.75mm Colour Change (UV) Red 0.5kg

eSUN PLA Filament - 1.75mm Colour Change (UV) Red 0.5kg

Shenzhen eSUN Industrial Co., Ltd was established in 2002 in Shenzhen Special Economic Zone and has rapidly become one of the leading international suppliers of 3D Printing Filament. They specialise in research, development and production of degradable polymer materials, and have grown their catalogue of filaments to include PLA, ABS, PC, PVA, and a wide range of other polymers and copolymers.

Their list of exclusive filament formulas include unique materials like wood, aluminium, bronze and other materials to create highly specialised filaments that can stretch, bend, be moulded or otherwise behave in very unique ways. Their filaments are also commonly characterised by their absolutely round shape, extremely low diameter tolerance, uniform colours and impressively stable melting points. These characteristics, in combination with their long-term insistent policy of “Best Quality, Reasonable Price” has garnered them a large share of the market, with their reputation commonly preceding them within knowledgeable online and offline 3D Printing communities.

eSUN’s popularity in the industry has also helped to produce sustainable partnerships with many internationally famous 3D Printer manufacturers and distributors, with DIYElectronics having sole distributorship rights to provide their 3D Printing Filaments to South Africa and neighbouring African countries.