(2020-02-19, 0:48)Orion Pobursky Wrote: I've noticed that sometime when I snap something (especially a bunch of things at once) to grid or reset the orientation that it doesn't snap all the way but instead gets very close (the largest error I've seen is 0.01 on position, the matrix is usually super close like 0.0001)
Precision has always been an issue even while using all double precision variables.
The main reason is the mutation is applied as a 'difference' to all the parts in the selection.
So if the main part in the selection has been mutated a lot (or is read from low decimal count file) the rounding errors will be amplified.
Alternative might be to use 'snap all to edit grid plane' from the placement menu.