Stop in for a cup of coffee

I sharpen my bits on the bench grinder. My magnifier/light set just right. Still a difficult thing.
I used my small grinder for lathe bits set at 10 degrees and it worked quite well.
Its in my other garage. So freehand is what i do now. Getting the rake right and making the leads the same length is critical.
Take 2 3/8” nuts and hold them together at the flats.this produces a perfect reference for your point and angle.
Larger bits, bigger nuts.