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Fin fairing compound
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tcevans



Joined: 16 Jul 2002
Posts: 72

PostPosted: Thu May 20, 2021 9:13 pm    Post subject: Fin fairing compound Reply with quote

Want to smooth out minor nicks & scratches in MFC RTM waves fins

Looking for recommendation on a fairing compound:
- auto body filler (bondo)
- auto body scratch filler
- epoxy filled w/ micro balloons
- others?

Thanks in advance!
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isobars



Joined: 12 Dec 1999
Posts: 20285

PostPosted: Thu May 20, 2021 11:41 pm    Post subject: Reply with quote

I just coarse-sand away the nicks and scratches, trying by eye and feel to stick to the original planform and edge. I then use ever-finer wet-sand paper until I can feel absolutely no irregularities. Takes just minutes in the kitchen sink, and I haven't lost one international competition yet doing that. Smile
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swchandler



Joined: 08 Nov 1993
Posts: 10102

PostPosted: Fri May 21, 2021 1:27 am    Post subject: Reply with quote

I have used Marine Tex in the past with good results. It's pretty tough stuff, but not always the easiest to use. Also, being white in color, its not going to be an invisible repair.

1/21 - If the MFC fin is made from injected plastic, it's my bad for my earlier comments. I was thinking G10 or similar laminated fins.


Last edited by swchandler on Fri May 21, 2021 7:00 pm; edited 1 time in total
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grantmac017



Joined: 04 Aug 2016
Posts: 938

PostPosted: Fri May 21, 2021 10:59 am    Post subject: Reply with quote

Nothing really sticks to RTM in my experience. Better to just sand it back.
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isobars



Joined: 12 Dec 1999
Posts: 20285

PostPosted: Fri May 21, 2021 4:11 pm    Post subject: Reply with quote

I should add that, if nicks on the edges are deep enough that sanding them smooth alters the outline/planform of the fin enough to feel it with a finger or fingernail, I just blend the nick in above and below it until it's no longer detectable except maybe with a straightedge. Since a wave fin has no straight edges anyway, what's another millimeter of curvature? If the board still turns and points like before and doesn't spin out, and you haven't been featured on a windsurfing magazine cover, WTH?

A bonus: the fin usually looks new again, rather than like a patchwork repair job on its last legs.
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ctuna



Joined: 27 Jun 1995
Posts: 1050
Location: Santa Cruz Ca

PostPosted: Fri May 21, 2021 7:17 pm    Post subject: Reply with quote

Put the fin in a bench press gently(use a soft material so no direct contact
with the bench press) such that the divet is at the lowest
point then put epoxy on it to build up a drop of epoxy to cover the divet.
Let it dry then sand it to shape, being careful to get it equal sanding on both sides.
Also you can use tape around the divet after applying the epoxy to kind of shape it
so it requires less sanding afterward.
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kevwe09



Joined: 14 Aug 2016
Posts: 1

PostPosted: Tue Jun 01, 2021 7:36 am    Post subject: Fzmovies Reply with quote

How can I access Hollywood movies in Hindi on Fzmovies or is it safe to download from Fzmovies
https://tecvase.com/fzmovies-hollywood-and-bollywood-movies-www-fzmovies-net/
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ctuna



Joined: 27 Jun 1995
Posts: 1050
Location: Santa Cruz Ca

PostPosted: Fri Jun 04, 2021 10:54 am    Post subject: kevwe09 all of your posts have been reported Reply with quote

kevwe09 all of your posts have been reported
Go sell you stuff on some other site
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JamesHardy



Joined: 29 Mar 2002
Posts: 154

PostPosted: Fri Jun 04, 2021 11:44 am    Post subject: Reply with quote

I have use Solarrez epoxy ding repair to fix my RTM fins. Some of the dings have been upwards of 1/4 inch deep. It has chopped fiber reinforcement mixed into the epoxy for strength. Easy to work with and sand.
https://www.solarez.com/product/epoxy/
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wndsrfrmn



Joined: 30 Jun 2001
Posts: 35

PostPosted: Fri Jun 04, 2021 11:48 pm    Post subject: Reply with quote

I always grab a rock off the beach. A course rock will even out the big dings then grab a tumbled river rock to smooth things out.
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