Should nut slots be cut V-shaped, or semi-circle?

Cutting Slots In A Guitar Nut The Oak Guitar Build Part 15 guitar nut slot This makes a lot of sense! I've decided I'm going to order the nut files I've been wanting to go up a string gauge on another one of my guitars guitar nut slot The perfect tool for filing string slots into nut and bridge Product Guitar nut slot polish

guitar nut slot files Maybe I'll have to replace the nut when I get the slot even but functionally the nut is performing better than any on this guitar so far,