Sunday, August 9, 2009

And thats all she wrote. He wrote.


It's time to put the two halves together. It was mentioned in one construction manual that it was imperative to keep the building process moving because the hull may relax a bit after removal from the mold. This is not the good kind of relaxing. It means the hull gets narrower. If you leave it a real long time, it can get real narrow. Which is a real pain in all those places that you're thinking about right now. Real places.


When I held the deck over the hull to see if it was at least close, I almost swallowed my face. Maybe my tongue. Ok. Maybe I swore really a lot. Or possibly a real lot. My friend Gil was helping me. He has one of those laughs that you can't help laughing along with even if you just, say, cut off your finger. He laughed. I laughed. We put the deck down and I began to scratch my head.


What I needed was adjustable spreaders that would allow me to get the boat back to boat shaped. They needed to be a few different sizes. The bow and the stern sucked in a bit, too. I made tapered MDF wedges that I hammered gently into the pointy bits. I decided that I would like to remove them when I was through so I attached rope I could yank on later. The rope worked.

I used threaded rod and carved up some 2 x 4's into brackets to hold plywood cauls that were shaped to match the curve of the hull. Mostly. You can see these fabulous spreaders here.





Once all the spreaders were dialed in, I hot glued a piece of 2 inch wide 6 ounce fiberglass tape to the shear line of the hull. This makes it much easier to correctly place it. I used a teeny tiny drop of glue every 6 or 8 inches and pressed each dot of glue down flat. Keeping the tape taught is a good idea while doing this. When the deck is placed, the tape will be positioned already and it's one less thing to fool with.


I then got out the 2 inch painters masking tape, and blew through a couple of rolls taping the hull and deck together. This works surprisingly well. The surface area of the masking tape is equal to the state of Michigan, so it has a lot of holding power. That might be slightly incorrect. But I'm pretty sure that was fact checked, so trust me, would you?



Wetting out the inside seam tape with epoxy is relatively easy. You use both hatches and the cockpit for access, so there is never a long reach until the very ends. A foam brushed taped to a long dowel is a workable solution, and you just stuff it into the very ends a few times and everything should work out fine. Epoxy is likely to drip through anywhere it can find a gap in the joint, so taping the whole length tight is good idea. I had a leak at the very bow tip, and epoxy dripped on raw wood and set before I knew it was there. Those drips were a real pain to deal with, and if you know what you're looking at, you can see where they changed the color of the cedar. One board is kind of tiger striped when it should be solid. Sigh. As soon as one side gelled, I flipped the boat and did the opposite seam. The inside seam was the the least traumatic glassing job on the whole boat. I just wanted to say that.


The outside seam was a righteous pain the arse, excuse my French!


Again, the lying bastards who design these boats are prone to wild flights of fancy when it comes to expressing the actual difficulty of a given task. I'm sure they wouldn't sell any plans if they had a disclaimer like

'Don't be daft! You will never get any of this even close to right, so why fool yourself? Send me the 2000 dollars you'll end up wasting, and I promise I won't slap you.'


You see, if I had read that disclaimer, I would probably be building pipe bombs out of the anarchists cook book. Instead of boats. Boat, I mean.


If you do the stupid things I did, you might not want to be as stupid. I tried to mask off the hull and deck for the required one inch each side so the 2 inch seam tape would just drop into the cavity left behind from the masking. This was done badly. Very badly if I might say. Actually I must say it. If and when you see this boat, you may be inclined to ask what's this weirdness along the shear line. I'm suggesting you just leave it alone. Don't ask. Tact. Use tact.


If you mask off the hull, for example, I will suggest you don't use masking tape. I found black electricians tape works much better. It is harder to apply and you have to be careful not to stretch it too much. The elasticity is what will save your exalted butt later. Make sure you mask about an inch and an eighth. Be super anal about this. Its really important. Then when you wet out the glass, trim the excess cloth off to masked line or slightly above.


Do not leave glass over the tape. At all, for any reason.


Try using a plastic squeegee under the edge of the glass, and cut it with a razor knife. A steel drywall knife will also work. Ideally a piece of 1/8 inch plexi scrap with one edge beveled to a long taper would be awesome because you could see through it and cut just above the masking. I didn't do any of those things. I had about three layers of epoxy cured before I tried removing the masking. I wasn't easy, clean or smart. Bits of tape are still in the glass.


Once the first coat has gelled, remove the electrical tape. Pulling on it as you remove it will cause it to release and it is less likely to tear and remain under the epoxy.


I used the black tape when I masked for the outer seam. I had to cut the glass tape to fit because I didn't leave exactly enough room for the tape. You do not want to cut the tape. It is bound on one edge, and if you cut it it likes to unravel and fall apart. I was using the 'F' word as a noun, a verb, an adverb, and a modifier, all in the same sentence, on many occasions that day. Days. Remember what I said about the epoxy window? It has to be reapplied soon after it gels up, and it's true with the outer seams. After 3 coats, I sanded and discovered I wasn't even close. The trench the masking left behind wasn't filling too well. I really hoped this stage would be simple, but it was not. Not simple, not fun, stupid, stupid thing!


In the process of seaming, I tried something really stupid on one side. I decide I would let the epoxy set up a bit in the cup because it will cure faster when it develops a little heat, and it gets nice and thick and won't sag. The window of workable goo is much shorter and I was trying to spread epoxy as thick thick as molasses in January by the end, and it wouldn't wet out the glass at this stage. So on the port side, you can see the glass tape more than on the starboard side. Why I experimented on the actual boat is indicative of how I make mistakes. I just forget the dry run stage. The test stage. Carpenters do a thing called dry clamping. That's so when you actually use glue, you will know if it actually can be glued. What is the saying? Oh yeah...


Badges?!? We don't need no Badges!!!


Once I had built up enough epoxy, I sanded it out again. There were still divots. I tried the heat trick again, and it helped considerably. I sanded again. A few more tiny divots. At this point I stopped. I could do this drop fill thing for ever, so I decided to embrace the remaining divots as wayward children that need a home on my boat and thats better than my face so I'm cool with that. So are you.


It's time for the final sanding. Once the seams are feathered in, go over the whole boat with 120 grit paper in your random orbit sander. You are trying to remove any scratches the 80 grit left behind. Step up to 180 grit, and then 220. This is as far as you should go. Epoxy creates a molecular bond with the wood and the glass and itself if done in a timely manner. Varnish needs some tooth to bond to the epoxy. Because it is a mechanical bond, anything over 220 grit is getting too slippery. 220 will give a very smooth finish and the varnish will self level and look awesome over the epoxy. That is if you don't get any dust in the varnish.


That just isn't going to happen.


So you have to do your best at controlling the dust. I spread some of the thinnest, cheapest poly you can buy under my florescent lights. I stretched it tight and stapled it to the ceiling, my wood rack, and even some building material in racks up by the ceiling. I then draped plastic along the walls and unrolled some on the floor. I then started the varnishing. I used Epiphanes Marine spar varnish. It has lots of solids and lots of UV protection. I thinned the first coat to about 50%, and foam brushed it on. I wet sanded between coats with 320 wet / dry paper. I sand wet sand with one hand and wipe off the swarf with a painters towel. Wax on, wax off. And careful with that sash cord, grasshopper. It is recommended to do half the boat, let dry, flip it, do the other side. This seemed like a lot of work, so I decided to try to coat the whole boat. I found out that this only works if you can maintain a wet edge. Brushing on a whole coat takes about an hour and a half. You should do the combing first, and then the recess if your boat has one. Then move to one end and do a one foot section at a time. Start at the center of the deck and work to the shears and down to the keel. I found as the I progressed, I would have to reapply at the shear line. Work fast . Brush it on towards the wet edge horizontally. Then work it vertically to fill all holidays

and spread the thick spots. One last time horizontally so it can self level. Keep an eye out for sags and drips. You will need to catch them quick as varnish gels up fast. If you miss them, no big deal. When it dries it is a snap to sand out the errors. After three coats, I got up the courage to break out my HVLP sprayer. It tends to make a serious cloud of over spray, and I have always hated that. HVLP systems are known for their lack of over spray, but no one told that to my sprayer. The first coat was a disaster as I forgot about the exhaust on the turbine and it kicked a lot of dust from the floor. It was carpet like. I wet sanded of course, and then spread more poly on the floor. I taped a few seams, installed a cheap furnace filter for intake and used my portable fine dust air cleaner as an exhaust. There is still dust, but not nearly as bad. I had to thin the varnish to about 50% for it to level, but it didn't always want to cooperate. I realized it isn't going to look like a grand piano finish, but then again, grand pianos don't float. This is the kind of rational I can get behind.


All in all, I applied 7 coats so far. Three brushed and four sprayed. I think I'm done. I will paddle it till the season ends, and then go at it with some automobile paint polishing compound and a buffer. The varnish should be hard enough by then.




Varnish is the first line of UV defense for the epoxy. Epoxy isn't UV stabilized, and needs the varnish so it won't go cloudy. Yearly reapplications of varnish are a good idea. One coat in spring should do it. So I'm told. We live under a big ozone hole here in Manitoba, so tanning is a breeze and varnish is a must.


Most builders say the same thing. Don't spend all your time trying to get a faultless finish. Get that boat into the water and paddle it. Once you put the first scratch in it, it will be properly christened, and you can get with enjoying your new boat. I know I haven't. I started this blog installment right after the last coat of varnish. In four days the boat will exit the shop out of a second story window, and we will launch it in the mighty Red River at the end end of my street.


It has been a long strange trip. I knew that I was starting at the bottom of a long steep learning curve, and that proved to be a very astute observation. Now I know why most of the cedar strip craft I have seen are unfinished hanging up in someone's garage. The task was daunting even for an experienced carpenter like myself. The wood working was the easy part for me, but I had to use the full breadth of my skill set set. Techniques from stringed musical instrument repair, theatre and movie scenic construction, and creative problem solving were all used in this project. I had to walk away on a number on occasions and really scratch my noggin for ideas. Every time this happened, it was worth the wait. I find that ideas come fast, but good ideas should percolate down through your experience. Thats when the elegant solutions arrive in your head, and the real cool stuff comes into existence.


I have built many things in my life. Most of what I build is not for me. I have built many beautiful kitchens and bathrooms, deck and fences, and even some theatre and movie sets. But I do it for a living and not for myself.


This boat is for me. I will never sell it. I won't give away like I have done with all my carvings. This shall be passed on to my sons and their children until it is no more. I am not a materialist, but I do appreciate beauty, and this is a beautiful boat.






Wednesday, August 5, 2009

Bing, bang it's a boat! ( yeah, sure it is... )

Now it's time for some details. Things like hatches and deck lines and skegs and seats and stuff. Lets start with the hatches. Most builders recommend hatches with straps holding them down. Some suggest commercial hatch covers like VCP rubber hatches. They work very well and give you that production look. Not for my boat at all. I don't want something ugly and functional, I want beautiful and clever and somewhat invisible that may or may not work. OK, I added the last bit to protect the ignorant. Me. I decided that everything on this boat has to be difficult if not damn near impossible to make. So elliptical hatches it is. First, figure out how big they should be. Hell, first learn how to draw an ellipse! Your boat plans will probably have a hatch template, but thats too easy. I copied my fiberglass boats' rubber hatch dimensions. Sort of. I made the rear hatch wider than the front hatch because the deck behind the seat is flat and I wanted arm room to adjust the skeg cable. ( I'll get to the skeg next )

I made up 1/8 inch birch plywood templates, kerf cut them, and hot glued them to the deck. I then scribed a line and carefully used a very sharp scrolling blade for my jig saw to start the kerf of the hatch. I started with the back hatch and didn't get the prettiest entry hole. I built up the divot later with some epoxy. It didn't really work. The front hatch was better, and once I started the hole, I got out the jiggy saw and set her at about 30 degrees and cut the rest. Very carefully.


I didn't want straps holding down my hatch covers, and I didn't want to use rare earth magnets because they tend to screw compasses with in about a mile radius of the boat. Maybe not quite a mile, but you catch my drift. You do catch my drift, don't you? I designed latches out of cedar and spruce and high molecular weight plastic and a spring and a bicycle shifter cable sheathed in 1/4 inch pneumatic tubing. And a hunk of 1/4 inch plexiglass. See the picture below? Aren't I clever? The ex-wives didn't think so.



The recessed lip that holds the weather stripping that I really hope is water tight, is made out of fiberglass. I know that might be hard to read, but I don't care. These recessed lips are an idea from that guy from One Ocean kayaks, Valcav. I think thats his name. Any way, they were tricky to build. So tricky that I made them three times. Use plastic shelf paper to line the inside of the deck as a mold release and use 3/16 closed cell weather stripping to create a channel for the 3/ 8 weather stripping that will be the actual seal. Outline the hatch shape with the stripping and lay up about six layers of fiberglass cut to follow the curves. I just used a bunch of two and three inch long pieces about two inches wide. Be really carefull to get all the air out of all the layers. The voids the air can leave behind are the reason I had to make three sets to get it right.


I installed my latches so the cable would have a straight run to the cockpit. That placed them at the end of the ellipse. I won't do this again. I'll mount the latch on the side of the ellipse, and they will probably seal better. At this writing, the boat hasn't left the shop, so I don't know if my hatches actually work. But they look sooooo cool that I almost don't care. When the boat is sinking because the hatches don't seal, ask me what I think then. I carved little handles to yank on, and made little cable stays out of some laminated pieces of scrap. Everything works great in my dry shop, and the latches are very stealthy.



I wanted a skeg in this boat. I have one in my other boat, and it makes going straight a dream. If you are a shitty paddler, or have a cross wind the skeg is a life saver. It will keep you on the straight and narrow even as you abuse whatever your favorite vice is. I promise. I wanted my skeg to do the following tricks. It should be water tight. I should retract if it hits anything and redeploy when clear. I wanted a single cable to operate it, and that cable was to connected to a peddle between the foot rests so there is no visible activator.


I spent a lot of thought dreaming up the skeg. I chose to have it drop down into a more surf style skeg if I get out in the ocean. It will retract to a more traditional position with a touch of the peddle. I used 1/8 inch birch plywood as a core and covered it in carbon graphite cloth for that high tech look. A few layers of epoxy sanded smooth under many coats of clear enamel made a pretty cool looking blade. I made the box out of 1/4 inch pine plywood, and coated that with epoxy to make it waterproof. I wanted the skeg to be spring driven and operated by a cable, so it required a water proof axle to accomplish that. I scratched my noggin for quite a while and then it hit me. A faucet bonnet is exactly sorta kinda what I needed. It was $5.95 CDN which is about 38 cents USD. It is made from brass so it's a tad heavy. I bought the smallest one out there, but it's still has some heft. I originally used a shock cord to drive the skeg. Shock cord from the chinese hardware store doesn't really work for long. It becomes mildly irksome cord very quickly, and had to be replaced. Lookee!!




So I replaced the not so shocking cord with a spring from the same hardware store. Galvanized and out of a spring assortment bag for $3.99 CDN. It works very awesomely. It does. The cable attachment hardware was also tricky to create, but I pulled it together and everything works fine. Connecting the skeg blade to the bonnet / axle was done with a cap screw that is installed though a small access hatch I made from a two liter Pepsi bottle top. Those plastic caps are everywhere, so I'm confident I won't lose it. See?



Here is the puppy in action.




I built the combing out of laminated cedar and 1/8 inch birch plywood bent around a half form. I repeated this task three times till I got right. Arguably it still isn't right, but it's done so that is all we will say about that. I also bent and laminated a rim for the combing that was ripped in half after completed. It was definitely the hard way to build a combing. In fact, every other way looks easier and I'm sure would take a fraction of the time. But I choose the hard way and it looks like a million bucks if you squint your eyes a bit. It was time consuming and just a little bit frustrating to get that baby together. I needed a creative solution for cutting the combing lip too small. It looks like this



Heres another picture of the same process.



I mixed up some micro balloons and chopped silica and put it in the very ends of the boat to give me something to drill through for the rescue / carry handles. I drilled a 5/8 inch hole at the bow and stern just an inch or two from the stems. I then cut a hunk of spruce dowel, drilled it out to 3/8, and capped those dowels with ebony. They ebony is rock hard, so the rope won't wear it out ever. The ebony also looks tres` cool. We talk like that in Canada. Tres` tres` tres` cool.


I wanted light weight foot rests, so after buying two sets, I decided to make my own out of mini cell foam. I used the blocks you buy to put your kayak on your roof. Of your car, silly. I shaped these to the side of the hull and used industrial strength velcro. Velcro also holds my skeg pedal in place and allows for position changes. Readjusting the foot blocks takes a little while longer than foot pegs, but the weight difference is totally worth the effort. It's not like I'm gonna let anyone else paddle this boat for longer than a few minutes so positioning is a non-issue. Heres a peek.



The one thing I didn't build was the seat. I ordered a seat from the boat designer, Joe Greenley from Redfish Kayaks. It is made from mini-cell foam and weighs nothing. Really. It floats as though gravity doesn't exist. It's kind of spooky but very comfortable and well designed.


You should really consider deck lines. I did, and decided to hell with deck lines. I want a boat that is all sexy looking and naked of distracting safety features like rescue lines and deck rigging. Safety? Feh.

Meh,even..

Think Hot Rod. No roll bar, open wheels, no air bags.


Once all the details are covered or prepared, it's time to marry the two halves together. This is not such an easy thing to do. Or it isn't that hard at all. It really depends on who you talk to. What you don't want to do is leave the hull off the forms for very long. It can contract and become tricky to match the deck. Like the 'oh my God, I'll never get these things to line up' tricky. You will, but it might take awhile......