The hold down tics on the die cut balsa sheet were pretty wide. You'll definitely need a sharp knife to separate the pieces off the sheet.
Here's the back of the sheet. You can't see the die cuts meaning the blades didn't go all the way through the sheet. It took a lot of work to cut and free the fin pieces.
With old-school die cuts, there will be some variance between the pieces.
You'll have to stack and gang sand them using a sanding block with 220 grit.
After sanding, the forward fin fairing tips ended up uneven.
Line up the backs and trim the front tips even.
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