dorsai3d wrote:Yes, if you change the default speed, you change the other speeds. Fortunately you have full control over those speeds as well!
The infill is generally the fastest part that is printed, so it makes sense to have that be the fastest speed in the print and slow everything else down from there. Might be nice to have defined speed values rather than percentages, but then you just have the opposite problem, where things don't automatically change when you change the default speed of the print, potentially ruining something like a TPU print when you turn down the main speed but forget to change, say, support speed or something.
Unfortunately with large diameter nozzles, the flow rate through during infill is too great when you consider it is essentially bridging most of the time, due to the way infill is printed in S3D (90 degrees alternate passes with each layer, so each pass has a one layer gap to the previous except where it passes a perpendicular line from the previous layer). I've also tried reducing the % width for infill but this is not as effective as controlling the speed at which it is printed. In fact it had very little effect on keeping the infill bead continuous, only slowing it down seems to work. Yet I can print perimeters and solid infill much faster. I'm sure this is due to full contact with the previous layer. Also printing a full infill on each layer (rather than alternating like standard infill) is not optimal due to the amount of plastic involved.
If I could slow down the non solid infill without effecting other print speeds I would have an ideal situation with the large diameter nozzle. I would maximize speed and minimize material. I realize there are workarounds but every alternative is worse.