JFettig wrote:Infill extrusion width doesn't increase the width of infill except for where it crosses previous layers, it increases the depth - if you use only 2 orientations(45,-45) and 200%, it will make a relatively solid infill and not just be a pile of strings, it strengthens the part significantly, adding another angle to it negates that and the infill isn't stacked. Using random infill placement has no use, it only has negative effects.
Using sparse infill is also kind of pointless IMO - it extrudes more material per infill pass but only makes infill every so many layers specified - set to 2, every 2 layers of border, it'll infill once, but twice as much material, it'll be crude.
In my opinion, both angles the infill is laid, should be laid on the same layer to make solid infill and have to use the extrusion width at 100% like every other slicer does it, its stronger and more reliable, it only takes a little longer
Increasing infill extrusion width definitely helps increase the extrusion rate of infill. I've seen a couple pictures of a "whispy" infill vs one with increased extrusion width, and the width, solidarity, and rigidity were noticeably different. IMO, this is one of the most useful features I've seen added.
Sparse infill is not useless, and in most cases (at least when I last checked), many of lulzbot's company profiles (for a different slicer) use sparse infill. It helps save time by not having to do infill every layer. This way you can have a fine outer perimeter, yet have a coarse infill.
With an increase in my infill extrusion width, ive noticed much more strength in my parts.