Reply by doordude

i won’t coment too much cuz you’re getting alot of ideas. i sell and build doors for a living. interior doors are 1-3/8 thick,at finish. panels are 1-1/8” thick, floating,you could get by with 1”,but never GLUE or nail in place.mortice and tenon is best, but if used stricktly for interior, you can dowel the stile and rail. don’t use your three part finish.use either laquer or brush on poly by minwax,exterior finish.the 1-1/2” thickness was used pre 1950; when lumber was very straight grained.