Wooden Boat Plans Australia | Super structure metal work is finished

Wooden Boat Plans Australia

Tomorrow morning, before I take off for work, Im going to spend an hour or two so I can clean and organize the shop now that the metal work is completed. Im ready to prep the super structure for paint so I need to put away all the tools Ive been using to do battle.

Im a little blown away with how long it took to get the metal work completed. I did have a major set back in that the rough openings for the windows were cut for a four inch radius, and the windows are built using a six inch radius. There are 17 windows in the super structure and the repair consisted of me using my plasma cutter to cut out the 68 corners out of the existing rough openings. I then cut 68 new radius corners and welded them back in to the openings. The windows in the salon were easy as they were all square. The windows in the pilot house were a bit more of a challenges as they are all parallelograms, and required a little bit of noggin work to get the angles along with the radiuss correct. But, the window openings are now correct and all the widows fit the way theyre supposed to. Along with repairing the window openings, I added 60 or 70 more tabs to the window openings to bolt framing lumber to. 

 

 

 

 

 

Another job I got finished was fabricating the Tabernacle for the mast. After some indecision and talking with some other builders, I decided to go with a six inch mast. The primary function of the mast is going to be used to hoist my skiff to the roof of the salon. I am also going to have my radar mounted on the mast, and some lights and antennas. My long term plan regarding the mast is to be able to use it for a future para vane rig, and at a minimum, a flopper stopper rig. The Tabernacle is built out of 1/2" stainless steel. The pins used to hold the mast to the tabernacle are 1.25". The tabernacle is centered on frame #13. The tabernacle also has a doubler plate that it sits on and by doing some additional framing and reinforcing, I am spreading the load of the tabernacle to two additional frames, #14 @ # 12 . The bracket that will hold the para vane pole is also connected to frame #13 with solid 1/2" plates. I increased the flange thickness on # 13 to 5/16, and all is a continuous weld  were the reinforcing occurs. Two frames aft of the main para vane bracket, sits another bracket for another pole that will act as a brace for the main pole. The bracket for the brace is also connected to the frame with 1/2" plates. To connect the stays and shrouds, I welded 1/2" stainless pad eyes to frames.  I have two shrouds on each side, and one fore stay. I dont know if Ill ever use a para vane rig, but I do know Ill use flopper stoppers while at anchor. I had an engineering friend of mine give me some advice with beefing up the structure, and I feel good that I have things beefy enough. A fair amount of time and fabricating went in to this part of the boat. Because I will have electric winches for the mast/boom, radar, and some lights, I welded a 1.5" stainless nipple next to the tabernacle to run the mechanicals. I positioned the nipple so that  I can bolt a 6"x6" splice box to the tabernacle gusset, and use a grommet to make a water tight seal to the nipple. Ill use good quality cord grips to bring the various feeds out of the splice box.

The other job I  did was increase the width of the door at the salon to 32". Ill be fabricating the aluminum door, so I feel OK with the increased size. I plan on  having at least two dogs in the door to help hold it fast. Along with being weather tight, I want a door that will keep the thieves out.

Im using composting toilets on board and each one of those requires an 1.5" vent. I made those vents out of sch. 40 stainless. One is welded in to the soffit above the salon, and the below deck vent is welded in to the front of the wheel house.  Ill use PVC to connect the toilets to the stainless stubs I welded in the hull.

We have a shower for the cabins below deck, but due to the size of my posse, I felt it best if we had another shower on board. The easiest place to do this was on the aft deck in the port side corner of deck on the salon bulkhead. This will be a hot/cold shower. I fabricated a stainless shelf with a lip on it to retain soap, and a bar for wash rags and to hold back shampoo bottles.

I installed a 4" stainless vent for our 230volt clothes dryer.

On the aft salon bulkhead on the aft deck the fuel fills and vents reside. There is a two inch fill on both the port and starboard side. Next to each fill are the vents for the two port side tanks and two starboard tanks. The fill and vent pipes are welded in place. I really need a box around each set of pipes, similar to what Peter did on Koala ( now Kame Hele... not sure of the spelling). I have a little bit of time left where I can fabricated these boxs, and I might try braking them over the work bench. If not, my neighbor will do it on his press brake.

Outboard of the fill and vents are the two three inch vents for the lazzarette. These are weld in place.

I welded the six inch vent intakes for the master cabin. These vents are in the foreword wall of the wheel house.

To get up on the the roof of the salon, Im going to gain access via the wheel house side deck. Because of the raised pilot house, a five foot tall ladder is all that is needed to get on to the roof. I fabricated and welded some brackets to the salon wall to pin the removable ladder to. Its hard to describe it now, but because of the bulwark, and how I plan on working the salon roof hand rail, this will be a safe, secure way to get up on to the roof. I was going to get fancy and use a torsion spring to have the ladder self stow up on the roof, but my short time frame killed that idea and I decide to stow the ladder on  stainless post welded to the front of the wheel house. The forward  rake of the wheel house windows along with the almost 5 distance to the Portuguese bridge will allow all to pass by this area without bumping the ladder. It will make more sense once the super structure is welded to the hull.

Because I moved the aft salon wall, I had to cut the panel that extends down the salon line towards the aft deck. One of the boarding doors conflicts with this panel, so I cut it to fit. I gave this cut a nice looking radius where it meets the aft deck roof. It was important to me to keep some protection of the aft salon wall at this area, so we still have an inside corner where I cut the panel to accommodate the boarding door. Because both the port and starboard side panel are 3/16 material, I decided to treat each edge with a 1/2" stainless round bar. The round bar treatment should come in handy on the side where the boarding door is as this area will get some abuse. Hopefully, the stainless round bar helps with decreasing my  maintenance painting. Every exposed, exterior edge on board, has a 1/2" stainless round bar welded to it.  

I used 70 lbs of .035 welding wire to build the super structure. Im not for sure, but I think I drilled darn near 500 5/16 holes for bolting framing lumber to the steel frames. I might have drilled more holes, but Im going to order 500 2"x1/4" carriage bolts, nylock nuts and washers and see how that works out. 

As of today, my paint schedule is going to be blast the metal followed by two coats of epoxy primer. The inside of the super structure will get two more coats of Alkyd Enamel, then the framing lumber gets bolted on followed by spray foam. The roof of the super structure will get blasted followed by two coats of epoxy primer then three or four coats of Acrylic Urethane. Ill probably put a non skid on the roof, but that wont happen until after launch. The outside of the super structure will get blasted, two coats of primer, two coats of high build primer, fair ed, more primer to seal the high build, then top coat with three or four coats of Acrylic Urethane.

The last job I did to get the super structure ready to begin paint prep was to have my daughter and her friend Olivia walk around on the roof so I could fix the six or seven areas that were "oil canning". All that was required of that job was to find the offending areas, then weld a 1.5" flat bar between the longs and pull the roof sheathing down and weld it to the flat bar. Pretty easy job, but it still took us about three hours to wrap it up.

As anyone can imagine, Im glad to have this part of the job behind me. Paint and paint prep is going to be nasty, but I can now see the bitter end. Maybe by early October, Ill be able to post some sort of smiley face as I should be starting to take the front of the barn off.

 

 

 

 

 

 

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Boat Plans Arch Davis | Ive started painting the super structure

Boat Plans Arch Davis

The interior of the super structure is painted and once again Ive discovered the hard way just how big a boat this is.

To begin, I am changing the paint schedule. After speaking with a commercial boat yard, they have me convinced to  only prime the interior of the super structure. The interior metal will get covered with closed cell spray foam then the liner will go over that. There is nothing such as UV or physical abuse that is going to break the primer down, so a top coat of paint is really not needed. I gave the interior a thorough blasting and applied three coats of epoxy primer.

Because I  have to weld the super structure to the hull, I taped off the the bottom edge of the metal so I will not have to grind away the primer later. Having the prime being burnt off by the welding is not only nasty, it can lead to the  primer gas mixing with the weld shielding gas and cause a defect in the weld. Porosity of the weld would be one example of a defect of this nature. Taping the joint is a heck of a lot faster and easier vs grinding.

Because paint over spray is not an issue with the interior, I decided to do this area first. Acting on the advice of some experienced paint people, I have taken a different approach to painting this part of the boat vs the hull. When I painted the hull, I blasted then primed, then started doing my fairing and filler work. The paint guys talked me into blasting the joints I want to do filler work, applying the filler, then blasting the rest of the metal then priming. Doing the work in this order will save me time as I will avoid some scuffing. This order of work will save me the most time on the roof. I  have a few areas I want to do some filler work on so I blasted those areas clean, and applied some filler. The filler work Im doing on the roof is more for function than for aesthetics. Ill sand those areas smooth, blast the rest of the roof, apply two coats of primer, and within the 72 hour chemical bond able time limit, Ill top coat the roof. No scuffing will be needed, and the more reliable chemical connection between primer and top coat is achieved.

The sides of the super structure is the area that everyone is going to see. For the sides, Im blasting all the joints and welds I want to fill over, then Im applying filler. Ill sand the filler smooth, blast the rest of the sides clean, and two coats of epoxy primer. While the primer is still hot, Ill apply two coats of sand able high build primer and long board that coat smooth. I know Ill be doing some more filler work on top of the high build, but thats  to be expected to get a nice finish. Once Im good with the high build surface ( my version of good is different than a professional body mans version). Ill spray another coat of primer to seal the high build, then top coat with my off white Acrylic Urethane. At this point the paint will be finished, and the list will be that much smaller.

Ill be posting updates as I work through the roof and sides.

The move to the launch site continues to get pushed back further. October seems doable, but early November seems more realistic. Once the paint work is finished, there is still work to be done here in the shop that will make the launch site assembly go faster. There is really no reason to slow things down by getting in a hurry. This is a big ass ed job, for one man to do by himself, and the time it takes is going to be the time it takes. I can only hope that the crap weather holds off until I have her dried in at the launch site, but Ive worked my whole life out in crap weather, so Im not to worried about me. I just dont want to compromises any work on the boat nor cost myself extra money.

Ill have the roof blasted and primed this weekend, and if all goes well, well have a off white roof to look at come Monday evening or Tuesday morning.

 

Cheers

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Boat Plans Pdf | Stand for tuning finished model

Boat Plans Pdf

John Fisher sent these in. It might spark some thought for other people as well. He does not claim to have come up with this design, You can use any materials that you have handy, He has a mill and a welder, so his ended up in aluminum. these stands have been built from PVC and Copper pipe as well.

The stand has a vertical tube that is the pivot for direction. This way the boat can feather into the wind. If the ground is soft enough where you sail it can be pushed into the ground. Works fine in so-cal but not very well in colorado. Next there is a H shaped part that holds the boat. His are machined and welded aluminum, but he has seen this part done with copper water pipe or PVC pipe. He added the foam for insulating water pipes to prevent the boat from being scratched. The H should be able to rotate. This allows the boat to heel in the stand when force is applied to the sails. Connect the two and you have your stand. On his stand the connector is a pcs of 1/2" diameter SS tubing bent 90 deg. It provides both motions needed.



The boat shown is a hard chine 10R Class called the Diamond.


John Fisher has cutting files available for hard chine model 10R Class as well.
They go fast :-). Johns 10R Class carries 1500 sq in of sail, is 65"
long and only 9" wide.

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Boat Plans Catamaran | Finished with the interior firing

Boat Plans Catamaran

As the title says, Im finished with the interior firing, and await the insulator. While the firing job is neither sexy nor that much fun, it sure is nice to walk into the shop and smell fresh sawdust vs acrylic urethane, epoxy and thinner.

Theres really not a whole lot one can say to dress this job up and towards the end it just felt like work. Looking at whats left of the 1000 count box of bolts, nuts, and washers, I have to conclude that I installed over 600 of those little rascals. My ten year old 3/8 air ratchet took a dive on me during this project, so that got replaced. I used a case of polyurethane adhesive, and a fair amount of lacquer thinner cleaning the adhesive off of my hands.

I had a few people ask me what I meant when I stated I held the firing proud of the steel frames, so I thought Id include a picture showing how the lumber sticks past the framing vs explaining it. Installing it this way will allow me to use the lumber as a screed when trimming the foam, and will insure all the metal is covered with foam. Any metal not covered with foam has a high probability of sweating condensation then dripping on to the liner and creating a stain or damage. I know boats are a compromise, but having the lumber 5/16" proud of the steel does not mean squat in regard to head room or taking away from square footage. 6 10" of head room or 6 9-11/16"... who cares.

Wherever possible, I also held the firing off of the cabin sides. I pretty much stuck with 5/16" everywhere I could. My plan was to get as much of the metal covered with insulation. I used blocks vs continuous firing wherever possible, and once insulated, Ill pad things out to the finished wall surface with finished trim.

Im going to go ahead and install the blocking for soffit   that creates the overhang on the salon. Since there are no side decks, once the super  structure is welded in place, that job will then need a ladder 16 above grade. Ill bring the soffit to a finished state including finish paint and the wiring need for accent lighting over each of the salon windows.

I have a bit of work to do before the insulator shows up in regard to taping off any finish paint I dont want to get spray foam on. Because all the window openings are finish painted now, I think Im going to fasten some 1/8" plywood in the window openings. There is no way paper is going to hold up to the force of the commercial foam gun, and I dont want to pay the foam contractor to stand around while I fix a screw up.

Im going to foam the roof over the aft deck with a  half inch or so to stop any condensation. Ill also be installing a ceiling in this roof to hide the framing. One thing that bothers me with this ceiling is that the designer changed the height of the trim piece as it goes from the sides to the aft elevation. The trim is more narrow on the aft elevation vs the side elevations. Because of the way the roof is framed, in order to make the ceiling line constant, youll see the edge of the ceiling material protruding below the trim piece on the aft elevation. Im not into welding any fix in place now that everything is finished painted and Im about ready to foam. A drip edge of some sorts might be an alternative or a slight change in the ceiling profile as it passes the last frame. Theres more than one way to skin a cat, so its not that big of a deal, just some more detail work. I can deal with the actual ceiling at the boat yard, but I have to deal with the blocking before the foam guy shows up.

As I sit typing this post on Sunday night, Im listening to a Neil Young song with the lyrics "dont let it bring you down, its only castles burning" drifting from my speakers. That lyric sort of seems appropriate in that sweating the small stuff gets us nowhere. In the end, getting there is half the fun.

Cheers,

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