I'm building a Graupner Extra 300s and it's my 16th airplane. Been flying for 8 years. Never heard the term negative dihedral though. Thought mostly every plane was positve just second guessing myself and wanted to be reassured. Thanks.

Poor pics in the manual and it's rather vague. It says: "The two wing panels are joined with positive dihedral, that is, there should be about 6mm clearance at the center of the joined wing when it is laid down on the workbench inverted."

The 'inverted' part is what threw me for a loop causing the confusion.

Negative dihedral would be something like an Air Force C-5. Right?