Skinny Tools for Sinus

Here's the set of skinny hex wrenches I made for reaching inside the tubing on my Sinus. One is 5 mm, the other is 4 mm. The latter (smaller one) is for the nut, which is on the left side. Remember the old saying, taught me by my dad, "Nuts to the pilot!" These fasten together the flaperon control tubes, which meet in the upper center of the fuselage.

I sawed off two ordinary metric hex wrenches and epoxied them into lengths of tubing that I found at our local True Value hardware store. The one on the left may look hollow, but it isn't. I had filed off rough edges around the end.