HA! After reading my own stub wing website, I did say that about an airplane...Nemesis, and then recommended exactly what Pete mentioned...a simple micro fillet between the joints. It's a good thing I did this website...so I'd know how to build my next one the fast and "good enough for KR work" way...
http://www.n56ml.com/fillets.html Mark Langford ML at N56ML.com http://www.n56ml.com