The Otter is a pretty easy build. More parts than the usual for a FT plane, but still simpler than some of my own designs.
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I sealed all the seams inside the fuse by slathering hot glue into all the edges the same way I do my PBY. Should keep things perfectly sealed in case I didn't get the lower glue joints perfect.
This glue surprising doesn't add much weight. I removed some of the paper from inside the wing like I always do. I'm using C pack electronics, which are probably 30-40 grams heavier than a B pack. Between the paper removal saving, and the added weight from glue and bigger electronics I'm only 20 grams or so heavier than the specified B pack weight.
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