On Wednesday, January 23, 2019 at 8:10:57 AM UTC-8, k wrote:
Hi I need to cut a 3/4" wide slot 5" long through my piece of wood. The wood I am cutting is 8"x 8"s x 3/4".
I have roughed out a 1/2" slot.

If you have a small-diameter circular saw blade, two plunge cuts can define the
sides of the slot; then a short bit of router work can trim the ends.

Turning the whole slot into sawdust seems a waste of time and energy.
Starting with a half-inch slot is definitely wasting energy.