If the printer doesn't extrude sufficient volume for the speed it's moving at, the layer lines become thin and leave gaps. It's more apparent in this picture: h

If the printer doesn't extrude sufficient volume for the speed it's moving at, the layer lines become thin and leave gaps. It's more apparent in this picture: https://qidi3d.com/cdn/shop/articles/under-extrusion.jpg https://qidi3d.com/cdn/shop/articles/under-extrusion.jpg