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1.75mm Conductive PLA by Proto-Pasta 500gms

Product Code: CON-PLA-PASTA-1.75mm
  • Filament Brand: proto-pasta
  • Filament Type: PLA
  • Filament Colour: Black
  • Filament Diameter: 1.75mm
  • Filament Weight: 500gms
Proto-pasta Conductive PLA is a great choice for low-voltage circuitry applications, touch sensor projects, and using prints to interact with touch screens.
£52.80 Inc Vat
£44.00 Exc Vat


  • Availability: In Stock
  • You will earn 52 loyalty points with this purchase worth £0.52 that you can use on this order.

    More Details

    Have you ever wanted to create something with your 3D printer that includes electronics? Maybe an LED, touch sensor, or some other genius invention to solve the world’s problems? Then Proto-pasta Conductive PLA is the perfect material for you. 

    Take a look at what our friend Tony created using Proto Pasta Conductive PLA.

    Click on the picture below for more information.

    Checkout our conductive Buzz Trace

    You can read all the details on the Buzz Trace here.

    How Conductive Is It?
    The measure normally used to characterize a conductor is “volume resistivity” with the units of Ohm-cm. This can be confusing because it is not obvious what it means like “miles per hour.” It is simply the resistance through a 1cm X 1cm X 1cm cube of material, with full sheet contact at 2 opposing surfaces. It is often misprinted as ohm/cm which is not a common unit of measure.

    We measured the conductivity using a fixture we machined that clamps a sample between 2 sheet conductors and 1cm cubes printed on a Printrbot Simple Metal and machined from solid resin. Here are the results:
    Volume resistivity of molded resin (not 3D Printed): 15 ohm-cm
    Volume resistivity of 3D printed parts perpendicular to layers: 30 ohm-cm
    Volume resistivity of 3D printed parts through layers (along Z axis): 115 ohm-cm
    Resistance of a 10cm length of 1.75mm filament: 1.8Kohm
    Resistance of a 10cm length of 2.85mm filament: 600ohm
    Link to original kickstarter for more information:

    Suggested Applications
    Proto-pasta Conductive PLA is a great choice for low-voltage circuitry applications, touch sensor projects, and using prints to interact with touch screens (which require low conductivity, that's why you can't use your smart phone screen with gloves on). As a general rule, anything you can run through a 1K resistor should be doable with our material (if you design the conductors to be the right size). This will easily run a low current Arduino, if you are not powering much with it. Also, experiment with ESD or 3D printed bearings!
    Here is a link to some projects:

    What is it made out of?
    Proto-pasta Conductive PLA is a compound of Natureworks 4043D PLA, a dispersant and conductive carbon black. In filament form, it is quite flexible, and is compatable with any PLA printing printer.

    Strength and Performance
    We have not done substantial mechanical testing on this product but have some subjective parameters that should be useful in comparing this material with others:
    Strength: Fair strength. More flexible than PLA, but less layer adhesion
    Stiffness: Low, semi-flexible
    Heat Resistance: Similar to PLA, use below 50C
    Layer Adhesion: Fair layer adhesion. Not as good as normal PLA
    Flexibility: Filament is quite flexible but will break if bent repeatedly (particularly 2.85mm). Printed parts are rigid if more than a mm or two thick. Thin sections are somewhat flexible but fail along layer lines if flexed more than a few times.
    Failure Mode: If flexed to breakage, failure will be along layer lines.
    Warping: Very low warping
    Dual-Head compatibility: Compatible with (sticks to) PLA in dual material prints

    Print Settings
    Proto-pasta Conductive PLA is quite easy to print and is compatible with most printers that can print PLA.
    1.15 g/cm3 (1500 kg/m3)
    Bed Temp (if available, is not required): 50° C
    Hot End Temp: 215 – 230° C (we run it on the hotter side to encourage layer adhesion)