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I experimented fillets with/without fglass.
https://boatbw.blogspot.com/2016/02/does-size-matter.html

Hmmm, that plan view looks familiar, kinda like this view in real life...

https://3.bp.blogspot.com/-TOkRHNQp6zU/V8ce2W2iK7I/AAAAAAAADQA/Bv3bA2u1rG03wVhrR_z808fNOm2Slos6gCLcB/s1600/DSCN2357.JPG
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Whatever you choose, don't confuse Hydrotek with Aquatek.

I really really like Hydrotek's BS1088 Meranti. I really really like Hydrotek's BS1088 Meranti. Did I just repeat myself?
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Which, yes, is an indicator of garbage construction plywood - hiding pulp in the inner plies.

But, in marine plywood, that can be an indicator of quality marine plywood. Not hiding pulp, but...

The closest I have come to compound curves in plywood was by cutting it in strips. I have kerfed plywood to make it more flexible, but only in one direction. I have thought about kerfing plywood in...

Casters on my cradle allows a complete roll out. Trailer winch bolted to the shop floor hauls her back inside.


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Skeg(s) probably won't help with the docking problem. The problem is, S&G plywood boats are very light compared to their sail area. I know this from experience when docking my plywood S&Gs. Under...

Building a boat is not always about economics. It is not always about a wonderful design. It is rarely about resale value.

Often, it is simply about building a boat.

Enjoy the build.

Haven't used any solvents with epoxy for decades. I use as many disposable tools as possible. For non-disposables, I wipe the uncured poxy off with paper towels, let the residual poxy cure and peel...

Yes to everything MN Dave posted.

And, under my rock, my little hillbilly tests demonstrated that surface prep, of the non-blushing poxy that I use (West 105/207) in my environ, is not necessary....

Depends on the plywood species and specification, direction of bending and amount of residual bending stress the design can tolerate.

I would have preferred to accomplish this with two layers of...

Looks like they are simply labeled washers sandwiched between the switch nut and the dash. If so, is it possible to make them from fender washers using a lettering punch set?

There may be superior joining methods but I find that traditional 8:1 tapered scarphs in plywood, glued with quality epoxy, are stronger than the plywood. I demonstrate this to myself by destructive...

25 years ago I went with 1/4 laminated automobile safety glass mounted with automobile rubber gaskets. I'm gonna re-use some of that glass in my rejuvenated version of that old boat. But I won't be...

I installed two pairs of oarlocks and two adjustable thwarts so my Nemah could be rowed by one or two from many adjustable locations.

The owner loves it and uses a single thwart-oarlock combo that...

Looks nice. Should work out fine. If you happen to experience the misfortune that I experienced with my first, and last, bow eye, consider replacing it with a loop thru the stem.
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On my kayaks, for rubrails I used 1/4 x 3/4 painted red oak strips, fastened with SS woodscrews countersunk to finish flush. Still working great a decade or so later.
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I have no problem with small batches of epoxy.

https://4.bp.blogspot.com/-Ej1dj0rSvJU/WsbGj5uIzXI/AAAAAAAAECE/fvk4LIo239MlAPNQ1I6b1V8ctAH5tJ_YACLcBGAs/s1600/300-mini-pumps-2-300x300.jpg
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Mythbusters built a boat using frozen newspaper.
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It worked great
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until
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Beautiful boat.

If you add inboard weight to balance the oars you are adding weight that results in inertia that must be stopped, then reversed at each end of every stroke. Like pushing a box of...

My experience with PL was not good. See
https://boatbw.blogspot.com/2016/08/pl-failure.html

I have built CLCs, O'Briens and a Devlin. CLC and O'Brien plans and instructions were wonderful. Devlin plans were OK but instructions were worthless.

I have scaled/dimensioned plans for this pilothouse console.

https://2.bp.blogspot.com/-h2apAd9-vN8/V3063fNmB9I/AAAAAAAADL4/iaPoJdcTgvQmiKfz5gxAoQKnrg5mVVWIwCLcB/s1600/DSCN2144.JPG

The top half...

I have recently been unearthing SS screws that I stupidly left embedded in an anaerobic environ for over two decades. To my surprise, nary-a-one of the screws is corroded.

Been using a similar nylon webbing system fer years. They make plastic fittings that negate the need for sewing. I used a nail heated with a torch to make the screw holes in the webbbing so the...

That is what my experiment concluded.

My hypothesis was, slather it in enough poxy and glass and it can survive anything. I was wrong.

But, according to Edison, I did not fail. I succeeded in...

I am guessing that is UltraPly XL underlayment. I built a boat using RevolutionPly underlayment. Didn't work out for me. But I think yours is a superior product and may work fine.

If I did it...

FYI,

I put a sliding seat and a forward-facing-rowing-system in a boat I built, mostly for the fun of tinkering. It was an experiment. I discovered a way to take something as simple as rowing a...

Here is an option: run your own test with 5200. Stick a scrap to a couple of swaths of 105/207, one swath untouched, one sanded. Wait a few days, then try to pull the scrap off. Maybe do the same...

System 3 sells non-blushing poxy.

Twenty-five years ago, I took my newly-completed "wooden" boat to the inaugural local wooden boat festival. My boat was a plywood/epoxy stitch-n-glue cobbled together with thickened epoxy fairing...

No MEK in my shop

See https://epoxyworks.com/index.php/avoiding-surface-contamination/

No acetone in my shop.
See https://epoxyworks.com/index.php/avoiding-surface-contamination/

Never discard those disposable brushes. They can always be used in a beautiful artistic sculpture.
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OK, quoting has begun.

I use edible epoxy. I prefer peanut butter-flavor but banana is good too. No waste. No brush cleaning needed.

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I agree that thin surface plies with thick pulpy cores is not ideal, although my outhouse is built with 5-ply 3/4-inch pulp wood.

However, I was taught that good marine plywood does not have...

That looks much like the flooring underlament that I built my experiment boat with. It is not wood. It is like fast-food french fries - pressure extruded pulp.

I agree. Don't use it.
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Graphite (the softest mineral after talc) cannot physically make poxy harder. As a dust speck, it cannot make poxy stronger. It's "slickness" contribution is debatable.

My testing results are at:...

On my first build 30 years ago I substituted polyester resin for epoxy. I visited the local polyester supplier, approached the counter and the clerk asked, "May I help you?"

I requested a gallon...

Under my rock I did a little experiment with new poxy sticking to old shiny poxy. With no sanding of the old poxy surface, I glued a few samples then broke them.
The bond tween the old and new poxy...

I need an intervention.




Drift boat
https://2.bp.blogspot.com/-C7Aj0fHSFHg/Wg4eDuR0Q5I/AAAAAAAADwk/_mKZHhNmMXYb1hwn1rUZFPWUHoLaFwOIQCLcBGAs/s1600/SCAN0035small.jpg

I did a little experiment with mix ratios.

I use West 105 resin and West 207 hardener. It is a 3 parts resin to 1 part hardener mix ratio.

I intentionally mis-mixed ratios to see how they...

I find that the round file alone is good enough. I have no need for guides or pro sharpeners. Each tank of gas is accompanied with ten minutes of filing. It's a chain saw, not lasik eye surgery. If...

The following article recommends avoiding acetone and other solvents. When willl we stop making that mistake?
http://epoxyworks.com/index.php/avoiding-surface-contamination/



And this article...

I coil mine out in the open, off the bow. I have no idea why this has succeeded for over 30 years but I'll guess that in the trees at 61°N there is not enough sun for UV to matter and the winter cold...

After breaking the first tow eye I ever installed, no tow eyes fer me. Bow loops thru the stem are my preference, even on light boats like kayaks. Not sure if such would work on a SOF.
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Installed safety glass 20 years ago. Slight backward lean. Loved it. No wipers, just RainX. Works fine in the salt spray-rich environ where I boat.
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I have a solar-powered flashlight. It works great in direct sunlight.

If choosing butts to avoid cutting the scarph, consider this butt block design...
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