Raised Panel clearance

[Jim Willi]

I am building my first raised panel cabinet doors. I have completed the stiles and rails. My next step is the panels. How much clearance is needed between the tongue on the panel and the groove in the stile/rail? I am talking thickness clearance. I am using spaceballs and have left the clearance stated for the height and width. The material is red oak. I notice my cabinets in my house have a visible clearance which is at least 1/32". I was planning on making it just so the panel would clear and slide in the groove. Any suggestions?

[Rob Cunningham]

Jim,
My rail and stile router bits cut a .250" groove and the panel raising bit with back cutter leaves a .248" tounge. After sanding there might be about .010" clearance. 1/32" sounds like a lot to me.