Quote Originally Posted by xayoz View Post
As has been stated, many things could cause this. Start by releveling your bed, the enclosure idea is a good one, any draft can cause issues. My Ender 3 Pro is in one of these https://www.creality3dofficial.com/p...y-installation, https://www.seeklamp.com/
PLA plastic is used in many industries from food packaging (like the pictured water bottles) to biodegradable medical implants such as sutures, tissue screws, and tacks. PLA comes in a number of grades; scientific, medical, food safe, and then to the type of PLA used in consumer 3D printing. PLA's natural melting temperature is around 80C but it is mixed with other plastics to make it suitable for 3D printing.