DIYers making edges at home

I’ve made a few hang boards and a small training edge inspired off the tension block. One question I have is what tools to use/how to put a radius on a shallow edge? I can use a router bit down to about 20mm depth but any shallower and there isn’t room for the bearing. So far just hand sanding them but I’d like to figure out a tool solution for consistency. Any suggestions?

Not sure I am visualizing what you mean, and don't know what tools are at your disposal, but if you want a router round over profile, do that before ripping the board to thickness in order to have more than 20mm depth for the round over bit bearing. It wastes more wood unless you can use the off cut. Perhaps a double thick piece of wood, plus kerf thickness, round over opposite edges and rip to form two pieces.

Usually for making hangboard edges I would just use a router. If you want a big radius on a thin piece the easiest thing to do would be to make a thicker edge then put a thin piece of wood above it to limit the edge depth. You could also potentially cut a thin piece safely and accurately on a router table with the right fence set up. I also make edges by hand using either a block plane (good for straight edges) or a slojd knife (less accurate but fast and good for curves) although neither of those methods are as precise as a router. 

Ah those are all good ideas. I’ve typically been doing glue up Baltic birch to form the block, then use a straight router bit to cut the depth, followed by a pass on the edges with a round over bit to give a uniform edge. I hadn’t even thought to get the final depth last. I could do this with my router or use my hand planer. Mind = blown. Also could do it as a glue up too. Thanks!