Naked edges novice question

 From:  Pirandos
11271.1 
Hi guys, I'm quite new to Moi, just firs week learning. Faced a problem - can't make solid from jointed surface
Found some posts about naked ages, defined them but what to do next? how to fix my model? trying to figure out but useless, scaled, redraw blah blah blah :( but same result
Hope somebody can show me the right pipeline :)
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