Teeth that you can silver soder on saw blade

You'd be better off replacing the entire blade with a new piece.
Silver solder is not really designed for attaching teeth to blades as they are normally machine welded into place.
Home repaired blades never last as well as a new piece, so in the long run it's actually better economy to purchase new.

Agree, this type of repair would never hold up to use.

Dangerous also. Remember what your mother told you about BB guns, "You'll put your eye out".