Either would work, the 3/16" might be better for small projects. But if you had both, you have a variety. You might decide to go to 3/8" later for larger ones. You can practice with the mortises with using a good brad point drill bit, or a forstner bit.I want too make my own loose tenon stock. So for 3/8" tenons will a 1/4" roundover be okay or should I buy a 3/16" roundover bit?
Thanks in sdvance, _Duane