This is CS4 the top or lid as I’m calling it of the spar box. This step should have been done earlier however it suited me to leave it until I was ready for the part.

Its just 1 ply of BID on the three pieces that close off the box. I use weights and things to hold down the thin pieces.

Its the standard microslurry first then 1 ply on top. Surprising how long something pretty straight forward like this takes.

After cure it needed a trim. I haven’t done the knife trim thing as the plans say. I just let it cure then cut with power tools and finish off with permagrit files. I feel in control this way even if it takes longer. The knife trim always has me worried about disturbing the layup and of course timing it perfectly.

Lid foam held

Ends laid up

Middle of the lid