Today I worked on the rudder horn. Curtiss call for these part a 0.095 thick sheet, but i did it with my 0.100, i believe that adding "Knots" sometimes is safer and this will make my wife happy to! First of all i drew template and than drilled holes. Every time i make holes, first i use to mark the centre of a point with a center punch, than i drill a pilot hole with Center drill bits. thay are used to provide a starting hole for a larger-sized drill bit.Usually i use the #3.Traditional drill bits may tend to wander when started on an
unprepared surface. Once a bit wanders it is difficult to
bring it back on center. A center drill bit instead provides a
reasonable starting point as it is short and rigid therefore has a reduced
tendency to wander when drilling is started.
Piece almost done! ned to bend the two lugs, that i left a bit longer and stright. I'll give them the right shape after being bent.
