  Neutrinoless double-beta (0$\nu\beta\beta$) decay is the most compelling
approach to determine the Majorana nature of neutrino and measure effective
Majorana neutrino mass. The LEGEND collaboration is aiming to look for
0$\nu\beta\beta$ decay of ${}^{76}$Ge with unprecedented sensitivity. If
underground-sourced argon is not available, the cosmogenically-induced isotope
${}^{42}$Ar and its decay progeny ${}^{42}$K in the liquid argon active veto
could create a challenging background for the 0$\nu\beta\beta$ signal. We are
studying methodologies to mitigate the ${}^{42}$K background. In order to
achieve this, encapsulation of germanium detectors with 3D-printed technologies
using low background material are currently under investigation. Simulation
results of Poly(ethylene 2,6- naphthalate) (PEN) encapsulation of germanium
detectors and plans to study other potential materials are presented.
