Hei! I have been reading aal of your post and haven't contirbuted nothing. Here is my build for friend of mine. I made dining table and benches for him. Frame is made of 50*25*2 rectangular steel. Topa frame is made from l- shape 30*30*3. Table top I decided to make from pine instea of birch. Birch wood is more used in Scandinavia as it is quitw hard. Personally I like the look of pine more. Anyways Pine is waxed with Osmocolor white wax. It's quite fine looking stuff.