Tonight I only had to finish the aft rudder tube keel assembly, and then add Frame 0 to the forward keel piece. Easy jobs. In the picture below, you can barely see the hole for the rudder tube. The idea in this assembly is that the rudder tube fits in a gap created between "Keel piece #2" and "Keel piece #3". That gap is held open by two side pieces that are perfectly aligned by running 1/8" stock through the two alignment holes in back of the gap, and the three holes in front of the gap. In the picture below, you can see the stock protruding from the front alignment holes. Then frame 9 will slip into the slot you can see just in front of the assembly.  When planked, this rudder tube assembly will be extremely strong and yet relatively light. Much better than trying to carve a solid piece of wood and fit it to the bottom and then accurately drill a hole through it. Ugh... been there. This way, the hole is perfectly aligned, and perfectly straight. Tomorro...

This weekend I was able to get several small, but necessary, steps done on the full build of the Sun Wind II RC sailboat. The three double-frames are all laminated, and the remaining frames are clear-coated with epoxy. The fin was entirely laminated, shaped and fiberglassed. The rudder was laminated but still needs to be shaped. The aft rudder tube keel assembly was laminated. The three aft pieces are held in perfect alignment by two alignment holes that you stick 1/8" stock through and epoxy in place. I'll later sand them flush. The idea is that the keel piece that is just forward of this assembly will align to the forward three alignment holes and leave a 5/32" gap for the future rudder tube to go through. It's upside down on the table so that the flat top edges can be used to help keep it in alignment while it cures. Next, I still need to finish the aft keel glue-up, as well as gluing frame 0 to the forward keel piece. But then ...

Tada! Here's how my 6 laminations of 1/32" plywood turned out today when I took the clamps off... Here's how it looks mounted to the servo and servo tray. Yes, I have some work to do on the tray, and especially on putting down some velcro for the battery and receiver. And I'll need to ziptie the wires too, but you get the idea! Peace!

OK, so this is a total experiment and if it doesn't work I'll just make one out of aluminum. I laser cut 6 layers of 1/32" plywood and have laminated them together to make a crazy weird servo arm. This is how it looked in SketchUp Pro with the plastic arm underneath that came with the Hitec HS-815BB Sail Servo... Here are the laminations after the laser cutter finished: And here they are being laminated between two scrap pieces of 3/4" MDF: We'll see how the finished product looks tomorrow when I open it up! Aloha