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  • Bronze HTPLA Proto-Pasta

    Proto-Pasta

    New product

    21 Items

    19,95 €tax excl.
    24,14 €tax incl.

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    Filament composed of PLA and bronze powder recommended for printing heat sinks and bronze finishes.

    The HTPLA Bronze is composed of a polymer (PLA) and bronze powder, compatible with any desktop 3D printer FDM/FFF. 

    The bronce powder on one side offers more resistance to the filament than the standard PLA and on the other it gives a similar appearance and density to the bronze metal.

    The amount of bronze contained in this material is sufficient for transmission and heat dissipation applications, resistant parts or parts with a finish that need to simulate bronze in any of its states (bright, rusty, old ...). But this percentage of bronze isn't enough to be a conductor of electricity. In the case of searching for a conductive filament of electricity, the Conductive PLA filament or the Graphene filament should be chosen.

    Once the piece is printed, you can choose an infinite number of different finishes. Here are some of the Post-Processing techniques for this material:

    • Apply a heat treatment to the piece to make it more resistant to harsher environments and more resistant to wear.
    • With a wire brush expose the metal so that it rusts or get a glossy and satin finish.
    • Treat the surface with steel wool for a dark appearance, but at the same time smooth and shiny.
    • Paint the deeper areas with a dark color to highlight the contrast of colors.
    • Polish with a rotary machine with a cotton tip and a polishing compound on the high areas to achieve a high gloss.
    • Polish with sandpaper to obtain a smooth, shiny and light-colored surface finish.
    • Patina (oxidize) naturally or in an accelerated manner with hydrogen peroxide (apple cider vinegar) and salt (50/50). Heat can be applied to make the process even faster.

    Figures printed with Bronze HTPLA

    Image 1: Figures printed with Bronze HTPLA. Source: Proto Pasta

    The thermal treatment reinforces the structure of the Bronze HTPLA, giving it greater resistance to deformation at high temperatures, maintaining its shape up to 170ºC. The tempering process is very simple, you simply need a domestic oven at a temperature of 110ºC and introduce the piece about 10 minutes, having to adapt the time depending on the size of the piece, the larger, the longer the tempering must be.

    The Bronze HTPLA filament has an infinity of applications, among which are:

    • Pieces with appearance similar to brick or clay.
    • Accessories and hardware.
    • Simulation of old knobs and buttons.
    • Heat exchangers and heat sinks.
    • Elements of fine arts and sculptures.
    • Emblems and trophies.
    • Jewelry like rings, pendants or bracelets.
    • Game pieces or replicas of ancient figures.

    Different finish of Bronze HTPLA

    Image 2: Different finish of Bronze HTPLA. Source: Proto Pasta

    This material has been optimized to have a lower moisture absorption than conventional PLA and get a better flow to avoid clogging, something to which some Special PLA containing fibers or metal powders are prone.

    Softening temperature (ºC) 55
    Thermal conductivity Thermal conductivity
    Metallic content Metallic content
    Fiber reinforced Fiber reinforced
    Hide color variations (Hide color variations)

    The print is recommended to clean the nozzle by passing through it PLA or Smart Clean to avoid leaving traces of carbon fiber in it. Carbon Fiber PLA in filament state is more fragile than the standard PLA so must be handled carefully to avoid breakage. Optimum printing temperature can range between 185ºC and 215ºC according to each 3D printer. It's recommended to use hardened steel nozzles or the powerful Nozzle Olsson Ruby with a diameter equal to or greater than 0.5mm.

    Printing of this filament is just as easy to standard PLA. Although it is not necessary to have a warm bed to print this filament, if she have put it at 30-60 ° C it is recommended. The adhesion of the first layer is key and probably the most important factors for good impressions. so you can use Magigoo, DimaFixPrintaFix or BuildTak.

    General information
    Manufacturer Proto Pasta (USA)
    Material HTPLA + Bronze
    Format Roll of 125 g
    Spool of 500 g
    Density 2.5 g/cm3
    Filament diameter 1.75 or 2.85 mm
    Diameter tolerance ±0.05 mm
    Filament length ±20 m (Ø1.75 mm-125 g)
    ±80 m (Ø1.75 mm-500 g) 
    ±7 m (Ø 2.85 mm-125 g)
    ±28 m (Ø 2.85 mm-500 g)
    Color Bronze
    RAL/Pantone -
    Print settings
    Printing temperature 185-215ºC
    Print bed temperature 30-60ºC
    Chamber temperature Not necessary
    Cooling fan Recommended
    Recommended printing speed 20-80 mm/s
    Nozzle diameter >0.5 mm (Hardened steel or Olsson Ruby)
    Layer thickness >0.15 mm
    Mechanical properties
    Izod impact strength -
    Charpy impact strength -
    Elongation at break
    Tensile strength -
    Tensile Modulus -
    Flexural strength -
    Flexural modulus -
    Surface hardness -
    Thermal properties
    Softening temperature 55ºC
    Melting temperature 150ºC
    Specific properties
    Transparency  No
    Size of dust particles <0.25 mm
    Heat treatment 110ºC (10 minutes)
    Dimension variation (after heat treatment) 1.5% shrinkage on the X / Y axes
    1% growth on the Z axis
    Additional Information
    HS Code 3916.9
    Diameter coil (outer) 205 mm 
    Diameter coil (inner hole) 53 mm 
    Coil Width 55 mm 


    * The typical values detailed in this table should be considered as a reference. Actual values may vary depending on the 3D printer model used, part design and printing conditions. We recommend confirming the results and final properties with own tests. For more information you should consult the technical data sheet of the product.

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