The oldest set of wings still with me that I have silkspanned (now retired) were built in 2000. They have between 2400 and 2700 flights on them with at least 5 different powerplants (all IC) hauling the plane. That wing was foam cored and since it was protected in its husks and its own case, it is still like new.
Silkspan builds in robustness no different than glass and epoxy, except much lighter but also less ding resistant. The thickness is less. Wings, stabs require more care to keep hanger rash at bay.
Portlandflyer I opened the photos earlier in the thread. I love the art of the overlays. Your work reminds me of Bryan Hebert's and Raiko Potter's. Just beautiful!
Thanks Matt. I use very high quality catalyzed clear that helps create a hard shell so I find my silkspan finishes to be virtually the same as glass, which isn't saying much. I too am extremely careful with them. I use high dollar wing bags which helps.