I have several box joint router templates for ½ - ¾ and 1” joints. I use the ½ with 5/8 collars and spiral down cut bit mostly because less blow out as apposed to straight bits. I was thinking about doing box joint on router table and didn’t want to use 1” straight bit but after looking at the prices of spiral bits, I guess I’ll stick to ½” spiral bits.
Thanks for the inputs.