Tuesday, September 26, 2023

Estes Black Brant XII, Kit # 9723 Build, Part 12, Kit Tunnel Replacement



The kit directs you to glue two lengths of a balsa strip for the long length of the single tunnel. 
I didn't like the idea of forming a long, narrow butt-join piece. When sanding to shape, it could break at the small glue joint.



TIP: You might find it easier to shape a single piece tunnel. I cut a new one piece tunnel - 1/8" thick X 13 3/16"long.





Here are four new tunnels cut from 1/8" thick balsa.

I'm gang sanding all four at the same time for a consistent start shape.








Use the round end of the laser cut tunnel piece as a template to shape the replacement piece.

Rough cut with a knife, then round with your sanding block.

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