As all of you know, finding something that actually looks and works like duct tape in our scale has always been one of those "black holes" for which there was no good answer. Well, Greg Holland has solved that one! Notice the windshield on my recent Jody Ridley Falcon build. That is actually scale duct tape!
Greg has perfected this and you can now get a small sheet from him that has the right silverish colored sticky vinyl pre-cut into 3mm and 4mm strips. You simply peel, stick and trim like you would real duct tape (because it IS tape!) It is super thin, just right, and I imagine he can have the sheets cut into different widths if you prefer.
So when you have a build that needs duct tape, you now have the answer! I want to thank Greg for working with me on this thing and for coming up with the perfect solution.