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Picture of PVC AND DUCT TAPE KAYAK
I made this kayak last summer, but I have just recently joined Instructables. This will be my first time doing this so bear with me if my instructions aren't perfect. I really enjoyed making this and I also enjoyed riding it. It turned out to be quite stable, enough that I could stand in it and not have it flip. I made this kayak out of PVC pipe, duct tape, and garbage bags. The kayak is close to the water but I didn't have problems with water coming into it. The kayak looks kind of flat at the front because I wrapped it up too tightly and the front got squished. That means that your kayak could end up looking a lot better than mine. The kayak still worked perfectly. I just used paddles I had from a rubber raft and they worked fine until half of it broke and we couldn't find it. Sadly I didn't take many pictures so this instructable will be lacking pictures.

For this project you will need:
-5 pieces of 10' 1'' PVC (it can be a different size then 1'' but if you do it to much bigger it could be hard to bend)
-PVC pipe cutters
-4 elbow connectors
-12 T connectors
-Some garbage bags 
-piece of wood (for seat, you could use other stuff too)
-And lots of duct tape (I used around 7 rolls, but you might need more or less depending on how you wrap it. 3 of those 7 rolls were gorilla tape to make sure it was strong but you could probably use normal duct tape). 

During this instructable I will tell you better ways to make your kayak than I made mine since I didn't have much of a plan while I was making it.
 
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Step 1: Making the frame

Picture of Making the frame
Using your PVC cutters, cut about 4'' off two of the four PVC pipes and then connect the two 9'8'' with two elbow connectors. Do the same with two of the 10' long pipes (you may want to duct tape the elbow connectors to the pipes so they won't slip). Attach the two pieces together by taping their points to each other. This will make the kayak curve up which is good.
Cut two 8'' pipes out of the 10' pipe. Put them at about the center of the kayak at opposite sides and then connect them to the rest of the frame with two T connectors each. Out of the 8'8'' pipe cut two 2' pipes and use four T connectors to put them at about equal distances from the 8'' pieces on the the bottom part of the kayak (the part that curves up). From the 4'8'' cut two 1'6'' pieces. Use T connectors to put them on opposite ends of the kayak at points where they fit snugly.

Tips: When using the T connectors you will need to cut the pipe and you may want to tape the connectors to the pipes so it won't slip. Also it would be a great idea to look at the picture so you can see where things fit.  
 

Step 2: ADDING GARBAGE BAGS

You can use other plastic materials, I just used garbage bags because I had plenty of them. You can make them longer by cutting them down the sides (you don't need them to be thick, you will just put duct tape over them later). Then you just attach them everywhere over the frame as tight as you can (leave room for you to get into the kayak). I don't have any pictures of this step, but it is really simple and easy to fix. You can just tear bags off of it if you put them in the way of where you want to get in. This step is to make it easier to attach the duct tape and and so there will be no stickiness on the inside of the kayak.  

Step 3: PUTTING ON THE DUCT TAPE

Picture of PUTTING ON THE DUCT TAPE
In the picture you can see that the front is flat this can be avoided by putting on strips of duct tape side to side and up to down. Don't wrap it around (I was stupid enough to do this at the front and that's why the front looks flat, although it still floated fine). I put on a layer of duct tape and then I used gorilla tape to make sure no water would get through and to make it durable. As I said at the beginning you don't need to use the gorilla tape, but I would still recommend adding the second layer.

Step 4: FINAL TOUCHES

Picture of FINAL TOUCHES
You can add a seat if you want to. I just put a piece of wood in it and put tape over it so I wouldn't get slivers. You can put tape inside the kayak. I put some in, but then ran out of tape and it wasn't all that important to me so I just left it as it was. 
Thanks for reading my instructable. I hope it was of some help to you
thats freaking awsome, how stable is it and how easy is it to paddle?
It's very stable because it's wide, but it is a little harder to paddle than an actual kayak because it isn't as streamlined. When paddling the front of the kayak moves side to side a little. I also had really cheap paddles so that could have been part of it. Still it wasn't too difficult to paddle.
Sassah1222 years ago
This is a nice project I voted for this in both contests
MrTaco572 years ago
Hey furryZdog I like your kayak. I voted for u so could you return the favor and vote for my pi pie pops in the pie contest!! Thx
double_g2 years ago
Nice Instructable! Favorited, What would you say the total cost was for the kayak? Also I would suggest putting some styrofoam in the ends so it doesn't sink if it were to flood.
furryZdog47 (author)  double_g2 years ago
I'm not 100% sure, but I think it was about $50 (most of that was the duct tape)
Cheiron2 years ago
That is Awesome!

I wonder if you could fiberglass/epoxy over the duck tape to make it more permanent?
Gregbot2 years ago
Thanks!
Gregbot2 years ago
Thanks!
This is incredible. You should add this to the Make to Learn Youth contest if you're between the ages of 13 and 18.

Thanks for sharing!

GM