Masking canopies, even 109 canopies, is a pain in the butt to me. Thank God that Eduard sees fit to make canopy masking sets. This latest one is designed for their Bf-109F-2.
Cut out of Kabuki tape, the masks are able to conform to the curves of the canopy. There are masks for the inside framework on the aft canopy, like the real thing, as well as, the external framework. This set also contains masks for the wheels and the wing tip lights.
All is not perfect though. The center canopy framing should be a single piece instead of the two piece per facet. It is easy to add the center piece of the canopy so it still saves you time. Eduard insists that there should be framework on the center canopy but that is not on the Friedrich. Strangely Eduard provides masks for painting the wingtip lights. These should be clear pieces but Eduard has molded them with the wing in grey plastic. You are supposed to paint them silver and then with the appropriate clear green and red.