Cutting out the fins took practice and some wasted clear fin material.
This clear fin stock from Hobby Lobby is thicker and harder that the old Estes stock.
To start, the instructions were taped to my cutting board. The clear fin stock was taped over the fin drawing.
On the first attempt, I scored just one side of the fin stock using a sharp knife and straightedge. With the older Estes stock, you could simply score and crack it down the cut line.
Here's how the cut line broke.
The crack strayed off the score line.
I'll have to score the edge lines on both sides of the plastic.
To have better control cracking on the scored lines, cut your fins from a piece of plastic just a little larger than the pattern, maybe 1/4" clearance on all sides.
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