Fig 1.
Schematic of the Binder Jetting (BJ) process.
Fig 2.
a) European house borer (Hylotrupes bajulus) full grown larva (top) and adult beetle (bottom); b) the sieved frass (in a particle size fraction of 45 to 100 μm) produced by larvae and used for 3D-printing.
Fig 3.
a) Drywood termites (Incisitermes marginipennis), soldier and worker with frass; b) SEM micrograph of single pellets of drywood termite frass.
Fig 4.
Rendered X-ray tomographic dataset of the termite pellets studied, 180 pellets (left). The length, breadth and width of each particle as determined from the 3D data (right). The average length of the pellets is around 1050 μm, its breath (or width) around 580 μm, yielding an aspect ratio of 1.8.
Fig 5.
Schematic drawing, including dimensions, of the specimens printed.
Fig 6.
Images of the manufactured specimens from European house borer (EHB) frass.
a) Photograph of a printed cubic sample. b) Light microscope image of the sample from a), showing the wooden chops and macroscopic channels.
Fig 7.
a) Binder jetting powder bed filled with drywood termite frass, b), c) part printed according to Fig 5B, d) printed part similar to the one shown in Fig 5A.