Showing posts with label six hour canoe. Show all posts
Showing posts with label six hour canoe. Show all posts

Monday, December 5, 2011

The six hour canoe

So the pics in the last post about this canoe looked like it was about finished eh?...

That’s what I thought too.

But then I still had the front and rear bulkheads to make, fit a deck front and rear to keep the water out and make room for storage and floatation, then add strengthening strips to keep me on the inside and the water on the outside when I stood up or hit a rock. (Remember this entire boat is made just 6mm or ¼ inch thick)

Again this called for lots of wood glue, screws and a liberal sprinkling of Silicon bronze ring nails. (don’t ask)


*With the bulkheads in, the reinforcing done and the joins all epoxy resin coated and rubbed back.

By the way, the glue dried on my hands in minutes and felt like a second skin which had to be picked off bit by bit for days each time I got even a speck on me, bad enough? Not a bit of it, it also had the strange effect of staining my skin black, this black hands thing lasted pretty much the entire time I was making the canoe. (a harmless enzyme reaction to moist skin) I know what you're thinking…gloves? The glue is so tacky that the gloves fingers stick together within seconds of touching the glue and tear rather than separate…I was like a seal spreading the glue with flippers..


*The first coat of resin inside the boat all done, now to let it dry, rub it back and do it again!

I had something of a crisis of doubts here as it dawned on me that I had to coat the entire boat with the same resin and sand it back three times to encapsulate it.

I stopped work and went back to the web for information, on a forum I found an American who specializes in making these boats, he gave me the information I needed BEFORE I started.

He starts by coating the original plywood sheets with the resin before cutting them up thereby saving himself the huge job of coating and rubbing the boat. It’s much easier to paint and rub a flat sheet and you can use power sanders if you do it on the flat.





*Second coat done...now just one more coat (after rubbing it back)

Three coats of Epoxy Resin were required with a complete overall sanding of every millimeter between every coat because the epoxy dries glossy and the next coat wont stick unless the previous one is sanded… all while wearing a chemical respirator to avoid the poisonous fumes and dust. In fact nearly everything required a respirator, the wood dust while cutting or sanding is dangerous, the Epoxy and the paints are dangerous and anything to do with Fiberglass is dangerous… it was like ‘Darth Vader builds a boat!’



*Three coats of epoxy, holes filled and sanded, hollows filled and sanded and three coats of white 2pack marine primer. Now all I have to do is put the decks on and prime them before the actual painting starts. (enter huge list of doubts here)

Note: I haven't even started the outside of the canoe yet...still raw wood!




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Thursday, November 10, 2011

..so it continues

What do you know, the bottom looks like it will fit. (don't look too closely at the edges)

Looking from the front at the fitted floor and inside of the canoe.

Does this look finished to you....you wouldn't believe the amount of work still to do at this point.

About here I was thinking I was on the home stretch.. Dream on!


After putting the sides together and joining in the floor sections with wooden batons, stainless screws and lots of waterproof wood glue, all that remains is to plane, sand and make the joints all look good with filler and sandpaper before painting.
Sounds easy doesn’t it?

This whole section was just one sentence in the plans but took many weeks to do.
Plane the edges to perfection…took a week. Sand the joints smooth as a babies bottom… another week.
I filled the many screw holes and fibreglassed the stem and stern posts* into the boat then discovered that fiberglass resin is not the right resin for the job.
The plans were a budget set and when I checked I found the resin they recommended is not at all suitable for wood.
In a panic I consulted the web forums… to find out that I had no option but to tear the fiberglass and resin out of the boat and start again… Easier said than done, I had to pry the edges up with screw drivers, tire irons and anything else that came to hand. (there was some hammering) Then I pulled the fiber glass off with pliers, it actually tore the surface of the wood off with the fiberglass and I had to sand it all smooth again in the tightest of areas. (another two weeks effort and a little weeping)
With the right shipbuilding grade Epoxy Resin and fiberglass cloth I started back where I had been weeks earlier by glassing the stem and stern posts* and refilling the screw holes and gouges I’d made removing the original dodgy fiberglass. (mutter, swear)
Making filler from sifted sawdust and Epoxy Resin** then filling every tiny hollow took another week. Filling the bits I missed, sanding again, another fill and another sanding etc.
It was about here that I learned just how hard Epoxy Resin actually is. It’s a mixture of several nasty chemicals in a two part mix that sets faster than you want it to, then continues to harden until it’s so hard you cant sand it…
It’s so damn tough that it blunts sandpaper in seconds…and I MIGHT have used a little too much of it and had to sand most of it off to get the smooth surface I needed. I ended up using two hundred dollars worth of sandpaper, boxes and boxes of the very best quality paper I could buy.

As an aside I bought over 50 new paintbrushes and used them all just once.
The resin sets in just 5 minutes and the brushes cant be washed clean. Cheap brushes loose bristles into the coating so you have to use good quality brushes. If it’s not hot you might get 7 minutes to spread the resin before you have to throw the brush and unused resin away, mix more resin and start again with a new brush and container.

*The wooden sticky-uppy things at the front and back where the sides join.
**The official way of doing it…can you see why I don’t work with wood? Dodgy stuff..



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Saturday, October 29, 2011

The six hour canoe

Notice not one but two fire extinguishers... Confidant wasn't I?
This is the offending floor section after the repairs were made and the holes were filled. Dont look too closely at the edges, my sawing isn't the best.



(This was a long project so you will see bits and pieces now and again for a while)
If it looks like something you might have seen on a waterway near you dont be surprised, it's an old American design.
Reputedly the Six Hour Canoe can be built in just six hours... if you’re a ham fisted, rough as guts bushy who doesn’t care how it looks or how long it lasts.
But I tend to get a bit carried away with projects like this.

I was feeling a bit jaded and needed something new, something different.
It’s somewhat well known that the only thing I can build from wood is a decent fire, but what else would you expect from an ex-boy scout...

So what else would I choose but to make a wooden boat.

I’ve had printed plans to make the canoe for nine years now and thought it was just about time to actually make it. As I started I thought it would be easy enough and I could bore you with all the details...but that’s not what my blog is about.
Instead, I’ll tell you about the things that went wrong, and the things that went really, really wrong. (laugh with me now!)

First up you mark up two eight foot sheets of thin, flimsy ply wood and cut out the shapes, remarkably, this went well and I ended up with four bits that make up the sides and two more bits that joined together to make the bottom.
Joining the two side bits together went well enough, lots of glue, a thin cover plate of ply and clamps to hold it all together while it dries, but just where do you join a floor that measures out to 16 feet?
I decided to sweep the cement driveway clean and use that to lay out the pieces nice and flat, again lots of glue, a cover plate of the same marine ply and a big stack of bricks to weigh it all down. Clever eh?

Well, not really, you see the next day when I removed the bricks I found I’d glued the canoe bottom to the driveway and I couldn’t get it up, I had no choice but to use a power sander to slowly sand away the quarter inch thick joining ply. Eventually I was able to lift the sides one bit at a time with only a little damage.
I started gluing again and eventually ended up with all the bits ready to turn into a boat…


The sides came together rather well eventually. This stage took weeks as the stem and stern posts as well as the middle joints all had to be planed exactly to size and shape before I could put it together.

These pics were taken in my old cramped shed before it was torn down to make way for a new much larger shed. Now I've got room to swing a cat...if I had a cat.


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