carbonboy Posted April 22, 2011 Report Posted April 22, 2011 (edited) Well, I've been thinking about doing a build thread for my boat. I completed a 9 week (full time) Boat Building Pre-Apprenticeship back in 2007 as a way of trying to further a career as something more than just a labourer. This didnt quite go the way I wanted but I like to think I've still picked up a few handy skills & timber can be a real pleasure to work with sometimes. This boat was the end result of the Pre-App, my employer at the time was good enough to give me the time off to attend trade school & scheduled work I could do in the evenings after school to keep some form of income coming. I was full time casual, so no work equaled no pay! The process started with doing FULL-SIZE drawings, its only a total of 2.83 metres long so not that great a task. From these, our basic 'skeleton' frames were constructed, gusseted & were able to be positioned accurately with the help of a temporary work station. The frame in the foreground isnt gusseted as the transom sheet does this for us. :wink: The keel was then cut/hand-planed to shape. The bowsprit its attached to was constructed of strips of 6mm thick pine which were steamed then bent around a pre-constructed mould (basically blocks of wood nailed to a board following our scribed line), glued with epoxy & clamped. Framework begins. Chine (the point where the side of the boat meets the bottom) & gunwhale (top of the sides of the boat, in this case the lower one :wink: ) strips go on. Everything glued, stainless steel screws in & clamps off! Dammit! Due to the rather sharp curve from the first frame (or station) to the bow, these chine strips were prone to cracking, even after being steamed for 6 hours. Pretty much everyone in the class had at least one let go, so repairs experience was nice to have! You'd never know it happened! The sheets of plywood in the background started out as 4 pieces, which had to be scarfed & glued to make a larger sheet. The better the join, the better the end result. A few peoples joins failed immediately, mine wasnt entirely dead straight but held up nice & strong. These sheets had our panel shapes traced out onto them from our full size drawings then cut out oversized so they could be fitted nicely then trimmed to suit. Reinforcments were added, I think these were referred to as 'knees'. With the various angles, they were also a pain to make & get a really good fit. I think I remade mine twice. First plywood sheets on. Then the rest. Still needs trimming to suit but a nice fit so far. Some cut their ply sheets exactly to size...seemed like a good idea but the final fit was horrible. No play to move it around to close up gaps etc, so I spent some time joining ply sheets together :laff: A little extra glue to fill some small holes never hurt. :wink: It was also about this time that the glue-in-hair jokes started appearing. I had long hair (about mid-way down my shoulder blades length) at this point & this was 2:1 ratio epoxy, which had a tendancy to leave burn marks on bare skin. One guy got a hand on my tied-up hair, he then had my hand around his throat & me threatening to break his arm if he tried again. The jokes stopped. :yes: Making the basics of a frame for it to sit on once inverted. Go Thomas! Lots of hand-planing later... An inside look, notches had been taken out of the floor reinforcements to allow water to drain down to the keel then aft to the transom where twin bungs have been fitted. Yay, we're upright! A small piece that had chipped off has now been glued back in place. :wink: Transom sheet goes on. Making the second bow reo, check out the scar on my thumb! That was done on day 3 of the course, where I learned the hard way to NEVER use a chisel (especially a really f**king sharp one) towards any part of your body!! I only nicked myself in comparison to one fellow in my class....14 stitches along his index finger. All glued in & ready for a hit with the plane. Additional transom framework goes in, lap-joined, expoxied & silicone-bronze nailed. There was a lot of time with a hammer & punch on this thing! More knees. Edited April 22, 2011 by carbonboy Quote
Mitch-12 Posted April 22, 2011 Report Posted April 22, 2011 that is so cool :y: does it float :hmm: ? Quote
LittleRedSpirit Posted April 22, 2011 Report Posted April 22, 2011 Nice work on the boat. That represents a lot of hours. Quote
carbonboy Posted April 22, 2011 Author Report Posted April 22, 2011 (edited) Please note that this dinghy was built entirely by following the intructions set out in the course material. Those who had problems following step by step instructions made slow progress. I still have all of this material plus the full size drawings etc, material cost would be about $300-$400 for the dinghy itself sdo if anyone's interested in constructing one just PM me. Its starting to look like a boat in here... Oh yeah, we built the toolbox first, I still have it albeit epoxy sealed & well loved. Seats...sorry, THWARTS going in. Notice on the boat in the right hand side background there's a backing plate attached to the transom? This is because the dinghy was designed to either be oar-driven or have a small outboard attached. I on the other hand, had other motives of propulsion. Hence the quick design & construction of this...Well actually everything else aside from the boat I designed, trying to wrap your head around the physics of sailing can be headache inducing. Finally off the stand & the sanding begins. A few leftover pieces of plywood were cut to size, epoxied & clamped to make a little something to go with the case I made earlier. She's looking like a boat now, additional gunwhale pieces were attached between the second & third frames to provide a bit of, lets say, extra width for comfort. :wink: Bum shot. Bow shot. All completed, strapped onto trailer & being hauled off to my place of employment as my boss was kind enough to let me have some space. It wasnt a car so he was happy. Remember the leftover plywood I had earlier? Well things were starting to take shape. Here was a scary moment, drilling holes in my floor then using a jigsaw to cut to shape. You kinda cross your fingers & hope you worked everything out right when it comes to holes in the bottom of your boat! Cassette test fitted. Counter-sunk heads on the keel. Hey hey, it fits! The front thwart goes in for extra bracing. Centreboard & base components of rudder casette being well sealed with epoxy (Everdure). Shaping of the core of my rudder blade from 150kg/m3 high-density foam which had a 300kg/m3 piece inserted where it pivots in the casette (i.e the most crushing force). Exotic but good when you have access to offcuts for nicks! This was then skinned with woven fibreglass. The centreboard was then coated in epoxy resin. Edited April 22, 2011 by carbonboy Quote
carbonboy Posted April 22, 2011 Author Report Posted April 22, 2011 (edited) Then skinned with a lighweight (150gsm I think?) fibreglass cloth. A good arfternoons work. Construction of the rudder cassette starts. This was then spaced to avoid deflection, fibreglass reinforced & vacuum bagged for cure. Two pieces of fibreglass tube approx 8mm thick were laid up as I didnt have a mandrel long enough to make a one piece. So I made two & used my scarfing experience to join the two. Centreboard bogged up ready to sand. Cassette pieces. Fancy bits of offcuts being put to use.. More offcuts, this time being used as a baseplate for a mast. Remember the fibreglass tube I joined? Well I'd managed to cheaply acquire both a mast & boom made from white oregon. I know bugger all about timber but this was the best to use from what I'd found. I'd also found that it was hard to get ahold of in the length I needed & hideously expensive when I could. Problem was the mast was so short you wouldnt be able to duck under the boom, so I had to jack it up a (fair) bit. This had additional bracing at its base, I have lifted the entire boat off the ground by this bracing & its held firm so far! Without mast tube in place. 316 stainless rudder hinges attached with internal backing plates. Cassette & blade test fit. Yes this is a kick up style rudder so I don't have to yank the whole lot off when coming into shallow water. Of course if I forget to pull the centreboard up that'll hit first anyway. :laff: Base of mast & little bits. Boom attachment. We then had a brief trip home to setup the rigging systems. Edited April 23, 2011 by carbonboy Quote
carbonboy Posted April 22, 2011 Author Report Posted April 22, 2011 (edited) More rigging shots, darn upload limits! :laff: Carbon unis were laid up in such a way, that if my rigging anchor point wants to let go, its gonna have to take half the side of the boat with it. The entire boat has been epoxy sealed using a product called Everdure, so little chance of rot, yay! Home made rigging, can't remember the name of the line used but was some expensive marine grade, low stretch stuff. I never thought I'd find myself with a needle & thread. Fibreglass reinforcement on the bow. There's a hole in the bucket, dear Liza, dear Liza...For those interested, the boat is (in theory) still watertight as the height of the completely sealed/waterproof casing is higher than the theoretical waterline of the boat when loaded up. Plus water will have a hard time getting up there anyway with the snug fitting centreboard in there. :wink: Centreboard & rudder bogged & fitted. Flooring, version 1.0. Result = FAIL. Flooring, version 2.0. Result = WIN. Each of these holes were individually 3mm pilot drilled, then 6mm, then 8mm then countersunk on both sides then cleaned up with a sanding stone on both sides. Getting a nice, even gap was difficult. Lots & lots & lots of holes! These panels sit on top of the existing framework & allow water to drain off underneath, so I hoped! Bungs fitted! Flooring & rudder handle contructed of a timber/carbon fibre combination being epoxy sealed. Edited April 22, 2011 by carbonboy Quote
carbonboy Posted April 22, 2011 Author Report Posted April 22, 2011 Having been sanded back after cure, it was time for a spray paint session. Boss had a heap of leftover 2 pack stuff that he didnt want, so sent it my way. Good for the interior as its quite hard wearing. First coat. Al done, out to dry. Some shots of the non-skid surface mixture sprinkled (liberally) on mid-spray session. Sand can be used but when you've got access to the good stuff... Rudder blade painted. Centreboard painted. Mast painted. Boom painted. Mast tip closeup. Quote
carbonboy Posted April 22, 2011 Author Report Posted April 22, 2011 Interior sprayed! Yes I could've gone the clear varnish route, but I wasnt happy to show off all of my workmanship & varnish can be high maintainance, so a tick in the 'paint' option box. I had been pondering a design for quite some time, I know that when its in the water only the fishies will see it but seeing as it lives out of water usually standing vertical, I drew some inspiration from this. So the hours of drawing, getting things somewhat symetrical & masked up began. First paint colour goes on. Rudder cassette & handle painted too. Masking removed, paint allowed to cure for a few days, then it was time to mask it all up to apply second stage paint. Motivational messages to my old workshop manager, he was a cranky bugger who didnt like my sense of humour. Quote
carbonboy Posted April 22, 2011 Author Report Posted April 22, 2011 Masking removed, all is revealed! Rudder hinges fitted. Plastic oar lock mounts fitted & sikaflexed. Rudder fitted to cassette. Me learning stainless welding to make a handle for my centreboard. Getting towed home after painting for further fitout. Boss wanted more space in the workshop lol. Getting her rigging sorted & final fitout. Quote
carbonboy Posted April 22, 2011 Author Report Posted April 22, 2011 (edited) Unfortunately it hasnt been in the water even once yet :laff: Due to getting sidetracked on other projects it kinda just sat around for a while. Since having moved house I havent had the room for it so its currently sitting in storage in the garage at my parents place. Sad I know, but once the car's finished it'll be hauled out again. Edited April 22, 2011 by carbonboy Quote
carbonboy Posted April 22, 2011 Author Report Posted April 22, 2011 (edited) that is so cool :y: does it float :hmm: ? Thanks man, umm I haven't actually put it in the water yet...in theory, yes. Nice work on the boat. That represents a lot of hours. Cheers, it has been a few but I didnt keep a log so I can't say for sure. By the time we got through the theory/practice work of the course we'd used up about 16 of the 42 8hour days we had to build it & therefore pass the course. So there wasnt time to muck about. Very nice work man. Thanks man, it was for the love! :y: Edited April 22, 2011 by carbonboy Quote
FOOMAN Posted April 22, 2011 Report Posted April 22, 2011 Wow, that's looking heaps good! I've got a little boat which is sitting half finished out in my shed. This makes me want to go out and finish it. Quote
LittleRedSpirit Posted April 22, 2011 Report Posted April 22, 2011 I was liking it before the paintjob but that really looks good, shame some of it goes under the water. don't forget to give it a name on the side before the maiden voyage. Quote
carbonboy Posted April 23, 2011 Author Report Posted April 23, 2011 Wow, that's looking heaps good! I've got a little boat which is sitting half finished out in my shed. This makes me want to go out and finish it. Thankyou dude, it would be well worth the effort if you do. Finish it & I'll race ya! :wink: I was liking it before the paintjob but that really looks good, shame some of it goes under the water. don't forget to give it a name on the side before the maiden voyage. Some of it, most of it... :rolls: :laff:. I initially wanted to go the clear varnish route as even though its pine & plywood, it would still look nice with the right coating. Problems were: varnish needs regular maintainence & I'm lazy-ish, I'd added carbon/fibreglass reinforcements & not all the joins were up to a standard that I wanted people to see as I was just learning as I went along. Then the creative side kicked in :wink: :yes: If I ever build another, it'll be a clear varnish finish with a small outboard. Problem is, I hate going fishing! I will be sure to have a name painted on her before the maiden journey, still not sure what it will be yet, thinking "SSBS". (Silly Sailing Boat Saga) Either way there will be a bottle of Passion Pop smashed over the bow once in the water & hopefully floating. (wrapped in plastic bags to catch the broken glass of course!) Quote
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