On Fri, 28 Apr 2017 06:48:15 -0700 (PDT), Ivan Vegvary
wrote:

Making railings out of 2x6 stock, 122 in long. The center will be dadoed for the pickets. The flat faces will have slopes near the edges created by table saw.
Is there any way to slightly round off the corner where the sloping top face meets the remaining (about 3/4 in.) vertical edge. Other than sand paper.
Think homemade threshold where the slight top slope meets the edge.
Thank you!

Block plane and sand paper or router and sanding, me I would go with a
1/4" round over bit.