Another acceleration bug

Quote
dc42
I believe that the correct approach is the following, for a combined XYZE move (it's a little different for extruder-only moves):

[...]

One consequence of using this approach instead of the current one is that the maximum velocity and acceleration will be the same as for the current approach for moves along the X or the Y axis, but higher for diagonal moves. So rotating a print by 45 degrees could affect the print time and quality.

[...]

I have been thinking about this point, since I have been recently doing some batches of fairly large prints, each taking up to 6 hours or more. By my calculations, by informed choice of infill direction, the time taken for infill for given speed and acceleration settings would be reduced to just over 2/3 of the time of that for a printer that moved at the same rate in all directions, a considerable saving!

My hunch is that as time goes on printing speed will be come more and more important figure of merit. It is starting to be so for me at least!

regards
Andy

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Ormerod #318
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