Why is layers 3D model so peeling?

Layer peeling in 3D models usually stems from poor adhesion between printed layers, often due to incorrect printing parameters or material issues. Common causes include low extruder temperature (filament doesn’t melt enough to bond with the previous layer), too-fast print speed (layers don’t fuse before the next is added), or low-adhesion materials (like some flexible filaments). To fix it, try increasing the extruder temperature by 5–10°C, slowing the print speed, or using a heated bed for flexible materials to improve layer bonding.