But Never be dismayed by this alphabet soup. Just a few varieties are in daily use. Also, manufacturers are inclined to prevent these extremely geeky monikers in favor of far more descriptive names alluding to A necessary quality of the filament, like versatility (NinjaTek's Ninjaflex and Polymaker's Polyflex, For illustration) https://beckettgfinq.wizzardsblog.com/33065461/esun-abs-filament-fundamentals-explained