Hi Martin,

> I've tried a few values, but I wanted 0.2mm, just about the same as the other edges that are already done.

The previous v3 beta seems to have the same problem, so it does not seem to be a regression just from any changes in this most recently released beta.


There may be some kind of accuracy problem with some of the trimming boundaries in there, it may take me a while to be able to investigate it in detail.

In the meantime, in addition to Burr's workaround above, if you scale the object up by 10 times in size it seems that then a fillet of radius 2mm works ok, then scale it back down by 1/10 and you should have a completed 0.2mm fillet on it.

- Michael