Fully printable adjustable inline GT2 belt tensioner

This is an experimental GT2 belt tensioner that is entirely printed with 4 parts. Original idea behind was that the tensioner should be balanced and possible to install without removing belts, therefore the 2-piece adjustment nut. You might want to put a two zipties over the grooves on the static block and one ziptie over the adjustment nut once assembled, otherwise the belt or the adjustment nut might slip. Alternatively it's possible to use a metal M10x1.25 nut in place of the printed one, but