Can anyone explain to me how to do the Rigid Fin Method?
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...you're talking about a wall mount utilizing .020 mil plastic to back the fins?
Back fins as usual with 1/8" wire mesh and the .020 mil plastic on the show side. Once dry, remove everything and peel off the protective film on the plastic. Brush a thin coat of contact cement on fin and plastic. Wait ten minutes and press together. Trim plastic to the edges of fins/tail. Heat the edges (where it didn't stick) with a torch. To form a nice edge. But be careful to just wave the torch near the plastic edge until you can form it to the fin, smoothing with your fingers. Otherwise you can start the fins on fire! Be careful too, it can get hot. (I suppose a heat gun will work too).
In a nutshell, that's it!
There is a ridig setting epoxy from Newton Supply. Steve can tell you the item number.
Anywho, place a piece of masking tape on the FRONT SIDE of the fin. Mix the epoxy together, and apply it to the backside of the fin.
You will have to watch it and trowel it back on the fin.
Once it sets, remove the tape and trim the fin with sharp siccors.
Viola a perfect fin, you can even replace fin rays using extra fin rays from other fish. Makes a very tough and durable fin