Ender 3 3d printer not sticking to bed July 8, 2019 16 32 64 128 Ender 3 3d printer filament not sticking to bed 3d print not sticking to bed ender 3 v3 se Ender 3 not printing correctly Ender 3 v2 prints not sticking to bed Ender 3 s1 pro clogged Ender 3 v2 stringing fix Ender 3 disassembly