Let's see ... where did I leave off ... oh ya ... now it's time to make the vent tubes. Again, you can't just run to the store so we'll be making them. I need a 4.6 inch inside diameter tube so the cowl attachment ring will fit inside. The closest thing I can find is 4 inch PVC pipe. So, I bought a roll of brown floor covering paper and wrapped the PVC until it got to 4.6 inches, then I tacked the edge down with 3M-77 spray adhesive. ... but resin will be absorbed by the paper ... ok, let's spray the paper with PVA mold release ... about 5 coats.
Sorry, I don't have a picture of the tube once the paper and PVC was removed from inside.
Here's how it all goes together, though. I cut a hole in the cabin top, glass the tube through the hole, and set the vent box over the hole ... well, kinda ... there's a little more to it than that but that's the general idea.
There ... now just do this 6 more times.
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