If you have your infill angles at 45 and -45, with an odd number of Bottom Solid Layers the first infill layer is parallel with the preceding solid layer. This does not provide optimal strength. Unfortunately, currently, the only way to avoid this is manually change the infill angles every time you adjust the Bottom Solid Layer count.
Since all of the data is known ahead of time (i.e. bottom layers, infill patterns, etc), the software should automatically avoid this. At the very least, we should get some kind of warning, with a checkbox to rotate one or the other if the first infill angle is positive with an odd Bottom Solid Layer setting.
Thanks.
Re: Automatic infill start angle
+1 this drives me nuts.
