Material properties
     1) 3D printed parts:
     The 3D printer (Stratasys) uses a 2-component nozzle, and the
     (liquid) components are polimerized at the nozzle. We have no MSDS
     for the finished plastic components, but here are MSDSs for white and
     black liquid source material:
     Reading the MSDS, major ingredients are (oligo-)acrylates, which
     makes me suspect that the final plastic is a polyacrylate.
     Plexiglas is such a polyacrylate, and here is a reference to the
     fire behavior of Plexiglas:
     Approvals - PEXIGLAS