Today was finishing off the end pieces with hand tools and making a 1″ access hole at each end for wiring. I sealed the hole edges with epoxy. Too small for a flox corner and it is hard foam so I’m happy with it done simply for a change.

The pics show the spar still with all the peel ply on. It is very pretty underneath.

The completed CS Spar came in at 33.5lbs, Mike Melvilles was 29.5lbs. My spar tapes are 1000grams/sq meter Spruces were 746grams/sq meter or 29.5ozs/sq yard vs 22 ozs/sq yard. My tapes were 7.5 ounces denser for the same thickness. On this basis I have a good result.

The caps are 0.26sq yards per length. There were 19 and 14 plys, 33 in total but many were shorter although I added full length plies to top and bottom. CP’s have 30 plies total. Lets call it even overall 8.58 yds X 7.5 density difference = 64 ounces or 4lbs. Talk about rubbery figures!

Overall I am very happy with this part that I will be trusting my life to as the main load bearing section of the aircraft.

Access holes

Hard points

Completed