Alternating extrusion directionfor reduce warping.

[vovodroid]

What will be most effective pattern for reducing warping (which could be caused not only by thermal stress, but also by shrinking in nozzle?

Two perimeters:

• alternating both perimeters together every layer
  
  

• alternating each perimeter separately every layer
  
  

• each perimeter goes opposite direction
  

Several perimeters:

• all perimeters every layer
  
  

• each perimeter in opposite direction