RE: using expanding foam in built up wings
Hi it won't do any damage if you do it carefully.When you look inside the wingroot you know what you see in terms of structure.Insert the long nozzle and give it a 1/2 second squirt,watch and wait for a minute.It's infinately recoated as far as adhesion is concerned so be patient.Keep that up till eventually pops out at you and trim it off.It can't expand and trap itself in a cavity if you are carefull.