Here the pieces are sprayed with filler/primer.
Two of the smaller fins, there are four in total. These are glued as ribs over the open area on the wing.
Before with filler/primer sprayed on the left,
On the right, sanded to surface leaving a bit of the filler/primer in the remaining balsa grain pores.
The Kevlar line is tied around the top of the tube.
A great feature of recent New Way kits is a heat shrink tube to protect the the Kevlar line from the ejection charge heat.
For all the "newbies" - Kevlar is flame resistant, not flameproof. It can deteriorate and fail after 10 (or so) flights.
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