Electronics enclosures with board mounting from 3D printing

A printed electronics enclosure has to hold the board mechanically secure without stressing it during assembly. We integrate standoffs directly into the enclosure wall, with a small gap to the board, so that manufacturing tolerances of the board itself do not cause stress. We plan connector cutouts with slight oversize, because real connectors often deviate somewhat from datasheet dimensions and a too-tight printed window makes assembly harder instead of easier.

Heat is a topic in electronics enclosures that often only becomes apparent after the first test. A closed plastic enclosure traps heat differently than an open sheet metal chassis, and at notable power dissipation, wall thickness alone is often not enough for cooling. We therefore plan vent slots so they allow convection while not becoming an unwanted opening for dust or debris, and for critical applications we discuss expected internal temperature beforehand so the chosen material safely withstands it.

For fire behavior, clarity matters more than marketing. ABS FR and PC FR are flame-retardant compounded raw materials with a UL94 rating, but that does not automatically mean the finished printed part is certified, because wall thickness, geometry and manufacturing process all factor into a genuine part certification. Where an application needs a tested certification of the finished part, we say so openly instead of selling the material property as a substitute for a test certificate. The same applies to ESD protection: standard filaments are not antistatic, and applications with a genuine ESD requirement need specially compounded materials outside our portfolio.