cheers dude :-)

printed three of the old style - all at 150mm/s and 50mm height :-)
I did have to adjust internal walls/dimensions by -0.1mm to get smoothly working boxes with no post processing.

There's something about that shape that refracts the light in a way that layer lines almost vanish.

I'll make a one of the new ones today :-)

Been using up old part rolls of filament lol