AVI Nike Tomahawk Build Part 24, Upper Fin masking

My first attempt at masking the Tomahawk fin can was a disaster!
That's one of the reasons it took so long to finish this one up. I was frustrated and set it aside for two years.
It finally came to me how to pull off the mask around the raised fin attachments -
Cut a small half circle with my rotary punch!

I chose a punch about the same size as the fin attachment nub.

Scotch tape was marked while still on the dispenser.

Slip the punch base under the sticky side of the tape and punch out a circle. Pull out some tape, mark and punch three more holes.

Now the punched tape is set on my patio glass.

Look close and you can see the "wedge" pieces cut around the holes.
Just under half a hole is used on each side of the fin.






The first picture shows the wedge pieces around the attachment lug.
The inset picture has the additional Scotch tape pieces set on the top and bottom of the lug masks.




After pulling up the masks, here's the finished piece.

It looks like the mask was placed too high outside the root edge area. Actually, it's in the center. The "root" edge is a bit rounded, not a tight sharp corner.