PETG
PETG guides: print settings, stringing and blobs, layer separation, bed adhesion and drying. PETG is the usual next step after PLA when a part needs to be tougher or survive outdoors, but it wants warmer, slower printing and more patience with retraction.
Fix Layer Shifts Without Overtightening the Printer
Trace a sudden sideways offset to a collision, obstruction, loose drive component or motion demand in a safe order.
Fix Elephant Foot on 3D Prints
Reduce the swollen lower edge by correcting first-layer squish and heat before compensating in the model or slicer.