Oughtred Contact

[SJKaplan]

Hi all,
I have tried contacting Iain Oughtred using the email "straydogboatworks@gmail.com" but it keeps bouncing back. Does anyone have a viable email? Thanks. Saul

[Peerie Maa]

Rather than putting Iain's contact details on an open forum, I have PMed you.

[sp_clark]

And if Nick's given you the same as what my PM holds, please ignore the duplicated favor.

Ought of benign curiosity, what's piqued your interest from among Iain's designs? I have printed plans for three of 'em, all different, all yet to see me making a start. (Plans don't take up as much space as the physical result of following through with 'em....)

[SJKaplan]

I am trying to determine what widths are needed for individual planks so I can have plywood ripped to make it easier for me to work.

[sp_clark]

Seems reasonable.

Which of his designs you have plans to build?

[stromborg]

I am trying to determine what widths are needed for individual planks so I can have plywood ripped to make it easier for me to work.

Pretty sure the answer to your question is going to be "It depends".

How long is the plank? How much shape does have? A finished plank that is nominally 7" wide at any given point might need 18" or more of raw plank to accommodate the sweep. Take a look at how the kit manufacturers nest planks into a 4x8 sheet to minimize waste. I do the same thing using my spiling (one plank at a time) to figure out the best shape to cut each piece from the panel, one 8' length at a time.

I have a set of plans where the designer has done the work to show how to get the planks from 2 1/2 4x8 sheets scarphed together, each full plank nested withing the sweep of the other. But he also offers this as a kit so the whole thing is already in his computer drawing system. As far as I know Iain is still a pencil on vellum designer.

[Peerie Maa]

I am trying to determine what widths are needed for individual planks so I can have plywood ripped to make it easier for me to work.

That might not work out as you expect. Planks are generally not straight.
Planks.jpg

[Andrew2]

Having built one of Iain's glued lapstrake designs, I don't quite follow the 'ripping planks' idea?
Are you building classic clinker?

[Peerie Maa]

Pretty sure the answer to your question is going to be "It depends".

How long is the plank? How much shape does have? A finished plank that is nominally 7" wide at any given point might need 18" or more of raw plank to accommodate the sweep. Take a look at how the kit manufacturers nest planks into a 4x8 sheet to minimize waste. I do the same thing using my spiling (one plank at a time) to figure out the best shape to cut each piece from the panel, one 8' length at a time.

I have a set of plans where the designer has done the work to show how to get the planks from 2 1/2 4x8 sheets scarphed together, each full plank nested withing the sweep of the other. But he also offers this as a kit so the whole thing is already in his computer drawing system. As far as I know Iain is still a pencil on vellum designer.

This is the plank expansion of a 16 foot boat I designed, nested on two 16 x 4 ply sheets
6 strake developments.jpg
She is a small coble, so a tad extreme.
Bow quarter (2).jpg

But it does illustrate stromborg's point

[sp_clark]

(I had a longish reply keyed in yesterday, only to lose it all when the forum software locked up as I tried to add a couple of links to images I'd posted elsewhere....)

Scarfing full sheets of plywood is intimidating for those unaccustomed to the challenges involved. Contemplating the nesting of plank profiles to 'get out' planks of needed shape in an efficient and economical manner is easy enough but sourcing sheets longer than 96" isn't.

Back late in 2021 I approached building from plans the amas/aka package developed by CLC for their Waterlust expedition canoe. The amas were easy enough but the aka to connect them to my Waterlust required four laminations of 5mm ply for its twelve foot overall length:



So I set about figuring out how I could cut the required pieces of ply that would then be scarfed to length before being stack-laminated to make the completed aka beam, then profiled to final shape.

Having paper pattern for the aka helped so I laid out as best I could the pieces required with an allowance for leaving material sufficient for some misalignment when doing the scarfing as well as staggering the scarf placement in the final assembly.

Scarfing was straightforward done with a router, and the pattern helped in getting the alignment close enough once I'd built a router carriage:



Once the pieces had been glued-up into their final shapes, the full beam got laminated thus:



Final shaping was done as though I'd used solid wood, with a pattern-following router bit then edges rounded.

Took time but saved me probably a full sheet of ply had I tried to first rip ply into panels wide enough to get the curves required after they'd been scarfed for the length needed.

(Alert me if these images don't display for others; they're hosted on another forum and may not display properly unless you're a member.)