Mitre or Butt joint?

[AllanKP69]

Sorry Karl, my mistake, don't know where I came up with Kurt..... getting older &c. seems to have its encumbrances. Many thanks for posting the drawings.
Allan

 

[Derek Payne]

From a Wood working view, a plain mitre joint offer little or not rigidity in any direction other that the fixing method be t it screws,nails or glue.
To ensure and rigidity in these drection the minimum would be a simple halving joint.Beyond that a dovetail joint would be better, but more expensive and time consumming to make. Thus, I suspect that a simple halving joint with maybe a dowel or "treenail" fixing would be the prefered method.

 

[RogerD]

Roger,
Beautiful work. Your joints are perfect especially when zoomed in like that. I can only aspire to that level. At normal viewing, and my age, my eyes can't see that close.

My apologies Russ, I meant to thank you for your kind supportive words from over a week ago.