Fusion boxes are meant to have fiberglass over them. I would have done this glassing first and then just left the paint alone or tried touching up the paint later. This is more work but it is a better repair, less likely to leak or fail.
Be safe, have fun. -J
I understand that, but i dont think my repair will leak. Its fully filled with resin and i add a hotcoat over everything. The fcs fin pflugs also have no glas over them and they are strong too. To add glas now will be difficult because i grinded down the box. Is there a technic to do it nevertheless now?
Yes, just put some good tape (3M 233+ or similar) or the stickers that come with the boxes over the holes and laminate fiberglass cloth and resin.
If the stickers are gone just cut the tape so there is almost 1/16" ( 1 to 1.5mm) larger each side of hole.
After the resin is half cured (not sticky but not hard) you can cut through the cloth and resin with a razor blade down to the tape and pick out the small piece of tape+glass+resin..
This is the same for capping a longboard 'Bahne' type box after the first grind flush with the bottom of the board.
There is also a trick about putting flour in the hole to catch any resin leaks.
Very good tips jrandy and wrcsixeight. Flour i never have seen in any video. Did you try it even for the screwholes? Does it work well? What about dough? Maybee it could work too? I think i will try to laminate it. But i have to wait some days to get warmer temperatures. I found out its much much better for the viscosity of the resin when its warm enough.
A warm workshop and right ratio is needed for good working resin. Until now i am very happy with the repair. I hope i will not mess it up.
Usually the tape is enough for both kinds of holes without the extras. The flour trick was from someone here so I remember it just in case, especially for a long box. I have also used a little surf wax in the grub screw holes. Some people use modelling clay.
I did it. I choosed the modelling clay.
I am ready. Everything looks good. Thank you everyone for your help.
See you on the water. Hang loose.
The repair looks nice and you can be proud of doing all the steps. Enjoy!