Proto Pasta Magnetic Iron PLA


PLA that is magnetic and rustable!

Only 1 left in stock

SKU: PLA Magnetic Iron proto pasta 500g Categories: , Tags: , , , , , , , , , , ,


Prints like PLA, behaves like metal!

Proto-pasta Rustable Magnetic Iron Metal PLA Composite is actually ferromagnetic.  It responds to magnets and behaves similarly to pure iron!  Encapsulated in plastic, the iron maintains a stable matte, cast metal finish as printed, but can be rusted when desired.  Here is why Proto-pasta Iron PLA is so interesting:

  • Weighted feel with 1.5x the density of standard PLA
  • Rustable to create modern artifacts in a few easy steps – instruction here
  • Attracts magnets (neodymium type recommended for strongest attraction)
    • Induction at magnetic saturation about 0.15 Tesla
    • Relative (to air) Permeability – between 5 and 8 independent of frequency up to 1 MHz
    • Permeability – between 62E-7 and 100E-7 H/m independent of frequency up to 1 MHz
  • More thermally conductive than standard plastic
  • Prints easily like PLA with less nozzle wear than Steel or Carbon Fiber
  • More filament for your money – 2x the length of Bronzefill (500g Iron =1kg Bronzefill)

We recommend experimenting with creating a rusty patina like this:

**This filament is more abrasive than standard PLA. Be prepared to replace your nozzle and do 1st layer adjustment. Try a wear resistant and/or larger diameter nozzle for increased service intervals.

In filament form, FEPLA is slightly more brittle than standard PLA, and requires extra care when handling. 

190-210C (standard PLA or a bit cooler) for the best experience. .5 of .6 mm nozzles reccomended

Additional information

Weight 1.6 lbs
Dimensions 8 x 8 x 2 in




Filament weight

500 grams


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