Ender 3 v3 recommended print speed July 8, 2019 16 32 64 128 Ender 3 v3 se recommended print speed Ender 3 v3 ke recommended print speed Ender 3 pro speed upgrade Ender 3 s1 printing speed Ender 3 s1 max print speed Ender 3 pro faster printing Ender 3 faster print