colorFabb Steel Filled 3D Printer Filament – 1.75mm / 750g Spool

Start printing with real steel metal! This filament contains at least 20% fine steel powder by volume. With post processing sanding and polishing, you can make printed objects look and feel like metal.



In stock

Material: colorFabb PLA/PHA + Fine Steel powder
Actual Weight of Filament: 750g (approximate length on the spool is 125 meters)
Diameter Tolerance: ± 0.05 mm
Density: 3.13 g/cm3
Glass Transition Temperature: 55°C

Suggested printing temperature: 215°C – 235°C*
Suggested print speed: 35 – 100 mm/s
Suggested heated bed temperature: 50-60°C

Build platform: colorFabb’s metal filled filaments (Brass, Copper, Bronze, and Steel) adhere well to both heated and non-heated build platforms. We recommend using BuildTak as your bed’s printing surface.

If printing on a glass bed, apply glue-stick. A very thin layer of glue will be sufficient to keep your print nicely in place. Another gluing method is dissolving PVA glue in water. The consistency of the mixture can be quite thin, like skim milk. By applying just a few drops and smearing the mixture out before you start printing will create a very thin layer which will hold the filament down.

TIP! Depending on your set-up, 3D printer and slice software, you might see that metal filled filaments need a bit more flow compared to your normal PLA settings. Most plastics will show die swell when coming out of the nozzle tip, this is counteracted with specific slicer settings. Since metal filled filament does not show a die swell, you might need to increase your flow rate by 4% to 8%.

TIP! Sanding and polishing your parts will make the metal particles shine. Start sanding with 100 to 180 grit and make sure all the printed lines vanish. You’ll notice that softer metals (like bronze fill) is easy to sand down, so be careful you do not lose too much detail. After layer lines have been removed, start working with higher grit sandpaper, such as, 240 to 320 grit. Finally, finish detailing your model with 600 grit – or finer sandpaper. Finally used a clean soft cloth and some metal polish (cleaner) to really get all of the shine out of the metal particles.

PLA/PHA and Warping: PLA/PHA has very minimal warping tendencies, however if you are printing parts which take up the maximum area of your build space you might see some warping. If it is important that your part is perfectly flat, than we suggest slowing the fan that is cooling your part. This allows the material to slowly get rid of heat without warping. After a few centimeters of layers have been printed, you can turn on the cooling fan if the part needs it

In-house testing
STACKER is continually testing our filaments to ensures the best quality possible. If you are not sure how to print with any material, please contact us at

Spool Size:
Outer Diameter: 200mm
Thickness: 70mm
Inner Diameter: 53mm

Tech Downloads: Technical data and MSDS sheets are available from colorFabb,

*3D printers have a wide variety of hot-ends which makes it extremely difficult to provide a universal printing temperature. The provided temperature range should be considered a starting point to help you find a temperature that works for your print. Please refer back to your printer’s operating manual for safety and temperature specifics.