An old way of making fibreglass fins was to lay sheet upon sheet of glass cloth,o same as the glass used for boards, often with different coloured resin for layers. When the sheet was at a suitable thickness and dry the fin template was laid on the sheet, marker pen marking the shapes for minimum waste and cuts..
The fin is then shaped to correct template shape and the foiled. The layers were a good guide to correctness of foil.
The process is messy, resin drips, dusty and probably injurious to health unless you use dust protection.
Fibreglass dust can be toxic and possibly carcinogenic
microfibre hazardous.
Where to get Resin, glass, catalyst or products in Germany , it is certainly not the epicentre of the surf world.
I don' t know
You will certainly have an interesting time? Fun, as the surf factory step and fetch it apprentice I got to do laminating and jigsaw rough cuts, pre fin systems , sehr schrecklick!
it is no coincidence that FCS fins are owned by a huge Australian Investment bank as not many people are hand making fins anymore because of the labour, and the market is huge.
there are some master hand foilers out there, and there is a beginning to 3D printing of fins.
Keep,posting, I'm very interested!
I've taken up troll hunting just for fun, instead of a rifle I'll just use a pun! 冲浪爷爷
