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First Build - 9'0" Wing 
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sage

Joined: Thu Aug 06, 2009 9:46 pm
Posts: 88
Location: British Columbia, Canada
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Unread post Re: First Build - 9'0" Wing
Did the lamination coat and hot coat on the bottom today. That went better than the top. A little practice goes a long way. It's looking pretty sweet.

Will try to post pictures tomorrow.


Sun Jun 26, 2016 2:35 am
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sage

Joined: Thu Aug 06, 2009 9:46 pm
Posts: 88
Location: British Columbia, Canada
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Unread post Re: First Build - 9'0" Wing
Here's a few pics after the hot coat on top and bottom. Overall it went pretty well, a few small bubbles here and there but nothing major.

I really like the high gloss of the epoxy, almost tempted to leave it as-is, but I think I'll sand it down a bit and then finish with System Three WR-LPU high gloss polyurethane varnish to get some UV protection. That should get rid of the bubbles too.

One question, what grit sandpaper do I want to use to sand hot coat before varnish?


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73-Top Hot Coat.jpg
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Tue Jun 28, 2016 8:38 pm
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sage

Joined: Sun Oct 07, 2012 2:34 am
Posts: 267
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Unread post Re: First Build - 9'0" Wing
I'm glad to see that you are back at it again. It was this thread that I followed and was inspired by when building my first board. Nice job on the whole project. Cant wait to see it finished.

Devin


Wed Jun 29, 2016 10:21 pm
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sage

Joined: Thu Aug 06, 2009 9:46 pm
Posts: 88
Location: British Columbia, Canada
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Unread post Re: First Build - 9'0" Wing
Here are more pictures of progress over the last few months.

I installed fin box and fin plugs for side-bites after the hot coat. First photo shows fin box routing jig in place.

I had a bit of a hard time finding info here and on swaylocks regarding placement of side fins. After some research this is what I settled on:

Side-bites were positioned with trailing edge 1.25" from rail and 16" forward of tail. I used 5 degree cant on side-bites and toed them in so that laser line projecting forward meets 2" outboard from center line (at the nose, see photo) which worked out to about 3/16" toe-in over the length of the side-bite.

(sorry for all the details, I want to have them written down in case I make another board and this seemed as good a place as any, hopefully they'll be helpful to someone)


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Tue Nov 08, 2016 2:02 am
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sage

Joined: Thu Aug 06, 2009 9:46 pm
Posts: 88
Location: British Columbia, Canada
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Unread post Re: First Build - 9'0" Wing
My lamination and hot coats were not as smooth as I would have liked so I sanded them down before doing the gloss coat. The board looked great at that point except for a few fibers in the gloss coat... making me wish I had a proper clean glassing room!

I decided to varnish the board for UV protection so I sanded the gloss coat a bit before varnishing. That took care of those fibers too.

I used the System Three water-borne polyurethane WR-LPU as a varnish. Using this product was a learning curve and a bit tricky at first. It says you can re-apply without sanding within 24h when using the cross-linker (which makes a more durable finish).

When I varnished the top I had trouble keeping a wet edge, even when working in 8-10" sections at a time. The stuff was drying super fast and when tipping a section the previous section was already dry enough to show brush strokes... Frustrating. I was working as fast as I could. I was using a bristle brush for applying the varnish and a foam brush to tip it. It was above 20C (75F) when I was applying it and I was diluting the varnish by about 20% with distilled water as per the instructions. Cross-linker was mixed in the water before diluting varnish.

After 5 coats on the top I decided I was going to have to sand and polish the varnish to get a nice look.

I decided to wait until it was cooler to varnish the bottom (15C, 55F) and diluted by 25%. I also switched to a 4" foam roller for applying the varnish in 8-10" sections and foam brush to tip it. That worked much better. I was able to maintain a wet edge and get a nice finish with this technique. After three coats it looked pretty good although it was not as glossy as the epoxy gloss coat.

Then came time to wet sand the top using a progression of 600, 800, 1000, 1200, 1500 and 2000 grit sandpaper followed by polishing with 3M Finesse-It II Machine Polish with a wool pad on an orbital polisher.


Tue Nov 08, 2016 2:30 am
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sage

Joined: Thu Aug 06, 2009 9:46 pm
Posts: 88
Location: British Columbia, Canada
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Unread post Re: First Build - 9'0" Wing
For the vent plug I used a SCUBA regulator adapter that I epoxied into the board. I then screw a dive regulator plug into that before going in the water.

For the leash I drilled a 1/2" hole from the top of the board down to (but not through) the fin box (after hot coat, before gloss coat) and filled that with epoxy tinted with sanding dust. After polishing the top I drilled a 7/32" hole all the way through the 1/2" epoxy plug and the fin box and ran the loop of rope to hold the leash up from the fin box. Pretty standard for a long board and cleaner look than a leash plug.


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Tue Nov 08, 2016 2:40 am
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sage

Joined: Thu Aug 06, 2009 9:46 pm
Posts: 88
Location: British Columbia, Canada
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Unread post Re: First Build - 9'0" Wing
Well, I'm glad to say this board is finally completed!!!

I'd like to take this opportunity to thank everyone on this forum for all the help, all the answers to questions and all the encouraging words of support I have received while working on this project. The willingness of people on the forum to help new builders is truly awesome!


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Tue Nov 08, 2016 2:46 am
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sage

Joined: Thu Aug 06, 2009 9:46 pm
Posts: 88
Location: British Columbia, Canada
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Unread post Re: First Build - 9'0" Wing
First day at the beach!

Tried the board for the first time last weekend.

It's great, can't wait to go back out.


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Tue Nov 08, 2016 2:49 am
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sage

Joined: Mon Jun 25, 2012 4:16 pm
Posts: 238
Location: Maine
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Unread post Re: First Build - 9'0" Wing
Great job!!!
Come over to https://www.woodboardforum.com and share the build.

_________________
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Kevin
http://www.woodboardforum.com


Sat Nov 12, 2016 9:24 am
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