I plan to rout a 1/4 inch groove halfway through the two vertical sides of a desk and put in a half shelf of 1/4 inch oak. I want to roundover the outer end to fit the rounded part of the routed groove instead of notching the end or squaring the end of the groove. What roundover bit should I use? I was told by one person to use a 1/4 " roundover and by another to use a 1/8". Which one? Or is there something else I need to use?
Thanks