... , asolutely round shape, accurate diameter(2.94-2.98mm,1.7-1.74mm), no bubble,high tenacity and stable melting when ... , asolutely round shape, accurate diameter(2.94-2.98mm,1.7-1.74mm), no bubble,high tenacity and stable melting point ... 2009. Esun glow in dark PVA PLA ABS filament welding rod for 3D printer