/diy/ - Do It Yourself

Do slicers take into account the nozzle size of printers or is that something I have to figure out when modeling? I've printed parts in the past which were supposed to be flush/fit together easily but they just wouldn't fit. Trimming to fit seems to take off more material than the width of the nozzle, though, but my printer should be calibrated - but if the calibration's off, both parts should be "wrong-sized" together.

I don't know where the issue could be.