Using pathfinder makes object slightly smaller

[kokosnaut]

When I use pathfinder to unite two shapes it makes the shape 0,0002 mm smaller... its so little it doesnt really matter, I know, but I'm doing a 3d-lasercuting job with a lot of rectangles and this little glitchy behaviour adds hours to my work.

It doesn't matter if theres a 0,0002mm gap when I glue the pieses together, but it's causing workflow problems.

[Monika Gause]

You could try and adjust precision in the pathfinder options.

There is no snapping turned on, right?

[kokosnaut]

Oh, never tried those settings! Thanks I'll check them. But it seems unlikely to me that pathfinder would change the object like that without there being a bug.

I found some threads on the forced pixel snap. Have tried toggling it on and of and restarting a couple of times and the problem seems to have gone away, or at least taken a break.

Yes, point snapping was on. Smart guides off I think.