Step 3: Cutting the Sides and Bottom

Use the Tape measure and measure in from each of the side factory edges 12". Do it on both sides and both ends. I marked it using a sharpie so it would show up in the pictures. Next set it on top of the 2 2x4's leaveing a gap of 3-4 inches.

Set your Circular saw so that it just cuts through your ply and does not cut into your work surface.

Run it down both lines so that you have two strips 12 inches wide and 1 piece that is about 23 1/2 inches wide (You wil need to measure yours for the next step).
me and a couple of friends built this boat from your instructable, we found them to be a little too rocky so we have bolted two together to make a small catamaran and they are brill, i use a small 3.5hp out board on mine, you can stand up in them now, only one draw back is that you can not paddle them on your own. <br>i will try and get a pic for you to see, we also use them on a small tidal river and use a plank to make a seat to sit higher above the water line.
I would love to see a picture of it. Did yiou see the other one I designed? It has a square bow and transom. This gives you more stability as the boat is wider at the ends. <br>Good luck with yours and stay safe.
me and a couple of friends built this boat from your instructable, we found them to be a little too rocky so we have bolted two together to make a small catamaran and they are brill, i use a small 3.5hp out board on mine, you can stand up in them now, only one draw back is that you can not paddle them on your own. <br>i will try and get a pic for you to see, we also use them on a small tidal river and use a plank to make a seat to sit higher above the water line.
The boat looks great! I am going to build one. How stable is the flat bottom?
It is pretty stable, You are seated on the bottom and I have swamped it but I had to lean a lot to do it. <br>I weigh about 200 lbs and had about 5-6 inches of freeboard. <br>Good luck and psot a picture when you are done please.
How many people could fit in this boat?
It is strictly a one person boat. I weigh about 200 lbs and it has about 6inches of freeboard (you can see that in the pictures where I test it out at the quarry). <br>I suppose you caould put two small children in, But I don't reccomend that. I also strongly suggest wearing a life preserver/ jacket of some type.
Thank you. The other thing I was wondering is how balanced is it?
Couple of things, you are sitting on the bottom but it is a very narrow bottom. It does tip but you need to make a conscience effort to do it. <br>I pulled the paddle very hard and it didn't tip in eiother the quarry or the pool.
Ok thanks :D
Verga, I have been considering prices for plywood... Yes I am going to build a boat. I always do a lot of research before I build something, though. Researching latex and fiberglass now...
nice job well executed for sure 5/5. This boat is ideal for calm waters like lakes. Do you have any recommendation for sea waters? Any change to shape? any idea?
you wouldn't want a small boat like this on the ocean. If you did, it would have to have cover from water getting in like a kayak, and I recommend filling it with Styrofoam so it can float.
and maybe a V shape at bottom....
Hull shape is always important. Go on the ocean with a small boat, and see how treacherous it is, and figure out what you need to do.
I love it! I just sold my 2 sheet kayak/canoe last week and was thinking a of building something to replace it. This might be the ticket. Quick and easy. <br> <br>
That's like a lake! Beautiful! :D
Roughly the same, You will have to do some planing with a hand plane or belt sander to get the angle. <br>Good luck with your build and feel free to ask any other questions
So basically, if I don't have a table saw, I can just buy 1x2s and it'll be the same?
Truly and awesome build! I'm seriously considering making one. Thanks alot for the instruction!
Quick tip for you....if you cut all of your plywood parts on a sheet of 2 inch board insulation, your work surface doesn't have to suffer. Trust me..I learned this on the hard way!
Good tip. <br>I just layed mine on 2 2x4'sand set the circular saw depth for 1/2 inch. <br>But your method will give it more stability.
about how much did this cost and how much weight can it hold?
Cost is based on the quality of the matierials you buy and how many mistakes you have. It also depends on what you have laying around the house. Also the rules for the competition I was in did not allow me to use any glue for this. Some glues are quite expensive, or if you coat it with an epoxy or Polyester resin that will add to the cost. <br>That being said The 1/ 4 inch B/ C plywood I used was about $20-$23 <br>The 2 x 4's cost about $5 each(I bought Premium grade to reduce the knots and I spent about 40 minutes going through the pile. <br>I used coarse thread drywall screws these were about $5. I had to use 1&quot; but 3'/4 would have been preferred. <br>Primer is about $8- $10 and Paint is $10- $15. <br>All told about $50. <br>As far as weight I weigh about 200 lbs witht he paddle life vest about 210 lbs and I had about 4-5&quot; of freeboard.
Very nice job Verga! I have a question I hope you can answer and forgive me if the terminology is not correct. Could I square off the back of the boat - make about a one foot wide transom and use an electric motor with this design? I'm sorry if this has been asked already, but I couldn't find it... thank you!!!
You might be able to, if you go tot he &quot;One sheet wonders&quot; yahoo forum they have several designs with a squared back. This boat is very tippy and with me in it. there is only about 6&quot; of freeboard on the side. I weigh about 200lbs
Thanks Verga... you confirmed my fears (I'm about 215) so I may have to go to a &quot;two sheet wonder&quot;... all the best my friend, Nick
Hi, I did exactly that with this design with the thought of adding a small electric outboard on the back. I already had it from on old canoe.. <br> <br>I also squared and changed the angle on the bow, put a keel strip, made it a bit wider and lowered the thwarts so my kids could sit on them .. <br> <br>Sadly It was dangerously &quot;tippy&quot; and we didnt even try the outboard. <br>In the end we just added some rollocks and have been happily and safely rowing on our local river ever since. Here's a pic of my son....Cheers
Thanks for the feedback. It looks like you did exactly what I thought about doing - sounds like you saved me a lot of unnecessary work. Thanks again and the boat (and your son) look great!!! ATB, Nick
WOW very nice job and he looks like he is having a blast!
Beautiful and simple. Great 'ible. 5/5<br> <br> A keel strip about an inch thick by 3 inches wide, would help a lot with tracking. It would also help with the strength of the bottom.<br> <br> I might adapt your design to an outrigger sail boat for my kids to play with. I will however use caulking and a little stronger gunal bands. I don't have to follow your race rules. :-)&nbsp;
I took first place in my age group and first place over all. I will a couple of additonal pictures
Hello Vegra, could you please be so kind and let me know the &quot;metric&quot; sizes for the &quot;step 1 materials&quot; And please explain what &quot;B/C grade plywood&quot; is Thanks you
This is the standard American grading system for &quot;select&quot; softwood lumber (US Dept of Commerce ratings / standards). B/C is lumber that falls into one or the other of these two definitions (same system is used in Canada as a lot of softwood is exported to the US) B: &quot;A few, small defects but nearly perfect. Used for fine furniture, exposed cabinetry, trim, flooring.&quot; C: &quot;Small tight knots. May be nearly perfect on one side. Used for most furniture, shelving, some trim and flooring.&quot;
Thanks. two questions are still there:<br> <strong> (1)</strong> 2 pieces 8&quot; =&gt; (foot?)<strong><br> (2)</strong> 2x4's =&gt; (2 inch x 4 inch?)<br> <br> No need for the metric sizes any more, i can convert them for myself<br> <br> Mfg Lars<br>
Yes the 2x4's are 2 inches (Actual size about 1 3/4 inch) and 4 inches (Actual size about 3 3/4 inch) by 8 ft long.
Good idea Good work
Nice job - both boat and instructable. Did you use exterior / treated ply ?
I used exterior 1/4 inch A/C, it was not treated. I was worried that it would need longer to dry than I had to build it.
I live in Penticton BC Canada and we had races every year the rules were the boat had to be made out of cardboard only and duck tape only and paint the boats were very creative and lasted for as long as two hours
This is Great!!! Did you win the competition?
seeing this step makes we wonder did you consider a mouseboat? there is also a yahoo group for them, I have made 3 of them so far. there are no posts in them just chine logs, though making enough chine logs from the one board could be a challenge. Just wondering and also if any one is being bit by the boat bug starting with a mouseboat is even easier, though you won't end up with such a &quot;boaty&quot; look when done as a mouse is a box. great &quot;Ible&quot; and a great build log for the onesheetwonders, I got the email about this one.
I did consider the mouse boats, but I know that the canoe design is faster than a blunted bow, and this is a race. I also have a lot more experience building this type of boat. I do like the pram design and might consider something like that for next year if this one is not stable enough for the race.
unless you are in waves and rough water the mouse bow doesn't slow you down (or you are very heavy) the base of the bow is normally a few inches above the water line, the water just sees a nice curve under the bottom and back up at the stern. Let us know how the race goes, the canoe looks stable enough from the pictures you have, good luck!
I dont like the no glue or cocking rule
nice boat, I see your rules do not allow glue, why not coat mating surfaces with paint before screwing them together. Should give waterproof joints
I actually considered that, but thatought it might violate the &quot;spirit&quot; of the rules, and since this si the first time I am entering I watned to be in strict compliance. Also I am a cabinet maker by avocation and machinist by trade, so i am pretty good at fitting.
nice I want one! what is the weigth of the one you made? I am thinking in the lines of madness and adding some straps and use the boat as a back pack and use if for shorter hikes for fishing, would such be possible? nice anyway, thanks for sharing.
i think he used the full plywood 4x8' length but in a certain way to maximize the use of ONE SHEET. ergo building a one sheet boat. anyways wether he use one sheet or two this is a boat i am definatly goind to make! (:O
I think it is around 30 lbs w/o the paddle, i will try and get a better number for you. I know that i can easily carry it on one shoulder.

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