Author Topic: Dave Daum Build Series - Foilboard Construction A to Z - Q & A  (Read 3050 times)

Admin

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Re: Dave Daum Build Series - Foilboard Construction A to Z - Q & A
« Reply #15 on: November 23, 2022, 08:49:47 AM »
I asked Dave a few questions and he responded:

The stringers are 1/4 Luan the extend all the way from the bottom to the deck. The time needed to finish shape the board is roughly 15 minutes. 😁 We laminate 1/8" Luan door skins to achieve the 1/4" thickness.  In the past we used PVC and polyurethane foam blocks. In nearly every instance, the foam blocks failed. With the stringers, we have had zero failures.
« Last Edit: November 23, 2022, 01:30:28 PM by Admin »

PonoBill

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Re: Dave Daum Build Series - Foilboard Construction A to Z - Q & A
« Reply #16 on: November 23, 2022, 09:34:35 AM »
Dave, If you can share it, I would like to know how you cut the slot from the bottom to deck for the plywood reinforcement? 
I thought about using a circular saw with fine blade but I don't think it will work since it won't cut deep enough. Or maybe a right angle jig with hotwire?

Dave undoubtedly does it with his CNC mill, but if I did something similar I'd use a router and template, the same as for mast or fin boxes. I have a set of jobber length router bits that go all the way to 7" in length. A little hard to find, I used a bit extension for a while but it always scared me.

Hey Admin, did Dave actually say that twice?
Foote 10'4X34", SIC 17.5 V1 hollow and an EPS one in Hood River. Foote 9'0" x 31", L41 8'8", 18' Speedboard, etc. etc.

tarquin

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Re: Dave Daum Build Series - Foilboard Construction A to Z - Q & A
« Reply #17 on: November 23, 2022, 12:35:39 PM »
Nice.
 Interested to know why you laminate your own wood when you could just buy plywood or use a lighter solid wood.

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Re: Dave Daum Build Series - Foilboard Construction A to Z - Q & A
« Reply #18 on: November 23, 2022, 01:31:59 PM »
Dave, If you can share it, I would like to know how you cut the slot from the bottom to deck for the plywood reinforcement? 
I thought about using a circular saw with fine blade but I don't think it will work since it won't cut deep enough. Or maybe a right angle jig with hotwire?
Hey Admin, did Dave actually say that twice?

Nope.  My fault.  I got giddy.

Califoilia

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Re: Dave Daum Build Series - Foilboard Construction A to Z - Q & A
« Reply #19 on: November 26, 2022, 11:08:57 AM »
Dave does a couple methods, this is my older 5'4x27" wing foil board where he cut through the entire board, glued in the stringers, and then straped everything all together again...

« Last Edit: November 26, 2022, 11:12:00 AM by Califoilia »
Me: 6'1"/185...5'1" Kings Foil Board...5'4" Kings Wing Board...9'6" Bob Pearson "Laird Noserider"...14' Lahui Kai "Manta"...8'0" WaveStorm if/when the proning urges still hit.

Dontsink

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Re: Dave Daum Build Series - Foilboard Construction A to Z - Q & A
« Reply #20 on: November 26, 2022, 02:39:52 PM »
I have used long (7in) jigsaw blades, on foam they worked great.

SUPeter

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Re: Dave Daum Build Series - Foilboard Construction A to Z - Q & A
« Reply #21 on: November 29, 2022, 06:05:37 AM »
I like the thread. Thanks.  Just my 2 cents. Whenever I stick wood in a board i will soak it or coat it in a Wood Preservative or Wood Hardener, forget what its actually called. It comes in a screw top yellow can and is basically polystyrene melted into acetone. It easily soaks deeply into wood and makes the wood impervious to water ingress. As far as weight, it is negligible. A light sanding will assure a good bond with epoxy or Gorilla Glue.

PonoBill

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Re: Dave Daum Build Series - Foilboard Construction A to Z - Q & A
« Reply #22 on: November 29, 2022, 08:18:29 AM »
I've never tried that. I've done some WEST treatment with my vacuum bag setup. That does add a bit of weight but makes the wood very interesting.
Foote 10'4X34", SIC 17.5 V1 hollow and an EPS one in Hood River. Foote 9'0" x 31", L41 8'8", 18' Speedboard, etc. etc.

SUS4Life

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Re: Dave Daum Build Series - Foilboard Construction A to Z - Q & A
« Reply #23 on: November 29, 2022, 08:56:22 AM »
interesting read on sealing wood with epoxy:
https://www.epoxyworks.com/index.php/thinning-west-system-epoxy/

I never use their products but really like their testing method and explanation.

tarquin

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Re: Dave Daum Build Series - Foilboard Construction A to Z - Q & A
« Reply #24 on: November 29, 2022, 11:19:44 AM »
It all depends on what you are doing. The type of wood and thickness. If he is using Meranti and laminating his own "ply" it will be saturated or sealed. That's why I asked why he makes his own. Sometimes a solid piece of wood sealed lightly will be lighter and strong enough. The wood will normally always fail before the glue. Even if you use D4 grade wood glue. ( not sure in USof A).

tarquin

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Re: Dave Daum Build Series - Foilboard Construction A to Z - Q & A
« Reply #25 on: November 29, 2022, 12:46:26 PM »
But yes basicall as SUPeter said


PonoBill

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Re: Dave Daum Build Series - Foilboard Construction A to Z - Q & A
« Reply #27 on: November 29, 2022, 05:55:26 PM »
West Systems is a generalized epoxy formulator and engineering firm (Gougeon Brothers) that was originally a company that pioneered and sold products for the WEST (Wood Epoxy Saturation Technique--I think) system that the brothers invented. In this process, a piece of wood or a wood structure is covered in epoxy and then placed in a vacuum. Air bubbles out of the wood through the epoxy, and then the vacuum is released before the epoxy kicks, pushing the epoxy into the wood. As you can imagine the wood is both sealed and quite a bit stronger since the epoxy reinforces the fibrous structure of the wood. I think that method has been supplanted by more modern techniques and composites. I never see it mentioned these days--not even on the WEST company website--but in the late 60's and early 70's it was a big deal. Then again, so were waterbeds.
Foote 10'4X34", SIC 17.5 V1 hollow and an EPS one in Hood River. Foote 9'0" x 31", L41 8'8", 18' Speedboard, etc. etc.

tarquin

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Re: Dave Daum Build Series - Foilboard Construction A to Z - Q & A
« Reply #28 on: November 29, 2022, 11:17:43 PM »
West Systems is a generalized epoxy formulator and engineering firm (Gougeon Brothers)???
 Pretty sure they invited epoxy. If not made it available to all. Still considered one of the best epoxy resins to date. Don't think they have every changed it.

JohnnyTsunami

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Re: Dave Daum Build Series - Foilboard Construction A to Z - Q & A
« Reply #29 on: December 03, 2022, 12:42:36 PM »
What density eps are these boards?

I’m in the middle of a prone board and have carbon on one side and some ripples from my peelply on the rails. I’m wondering how to deal with these (sand away the carbon or fill around with microballoons?) so if he could go over finishing and cleaning up between overlapping sections I’d appreciate it!

 


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