jimmybuckets wrote:It is a function of just about every CAM software I have ever used. If the tool size it too large then the CAM software won't touch it. You wouldn't want a 1/4" bit cutting out an 1/8" hole. Same thing applies here.
It really is not quite the same--more like the exact opposite. CAM programs leave the part "material safe" without a workaround. OTOH, S3d leaves the part with no material...and it is not a default, because you have no option to fudge it through S3d.
With CAM, you have several options; mine, for instance, you can tell it your tool is 1/8, even if it is not. That lets you get the job done if there is flexibility to vary the finished part slightly. It also let you leave a negative amount of material on the wall.
So, maybe S3d has a workaround that lets you fudge it...can you tell it the nozzle is undersized, then tell it to do a stepover distance that matches the actual nozzle size? I don't know if that would work or not, but it might be worth trying when the issue presents itself. You'd probably end up with the outer perimeter of the part being the wrong size, though, since telling it the nozzle size is different would effect that outer path.