I CA'd two fingers of my left hand way inside the fuselage of my Zero. About halfway between the wing saddle and the horizontal stab. I needed to glue a piece of thin plywood back there to strengthen a weak spot. Used a little more glue than really necessary! Nothing to do but carefully pry my fingertips off, leaving at least 3 layers of skin! But that wood stayed in there, by golly!
I really get into my models!