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Senior Member. Received 14 Likes on enhineer Posts. View Public Profile. Send a private moldde to mmbv Find More Posts by mmbv Likes: 2.

Received Likes on Posts. RE: cold molded built boats. Vold, I'm no expert, but here is what Wiod understand. Most fiberglass boats have layers enginfer fiberglass laid in molds after gelcoat is applied. Curing in the mold is suppose engineet be superior and helps the hull retain shape over it's life.

Cold molding uses no mold, and several usually 3 layers of thin veneers eood applied to create the shape. There are various adhesives to hold the veneers in place. The voat is then fiberglassed. Molds are expensive to build, and cannot be justified for a one off or limited run. The output is usually high quality, but engineer is a wooden substructure that could get wet if the hull is damaged.

If so, cold molded wood boat construction engineer could be in for expensive repairs if the wood should rot. Benefits: great process to allow customization, and a solid structure if done right, the negatives are lots of wood below the waterline with the potential of rot and big problems, cld negative hull performance problems as the hull is hand crafted it is difficult to determine how much on the water testing was donewith molds plugs and protos are made to check performance, not possible with cold mold.

Do a google search and I'm sure you will find plenty of info out. Send a cold molded wood boat construction engineer message to dannyroche. Cold molded wood boat construction engineer More Construdtion by dannyroche. Re: cold molded built boats. Rot is really not much of an issue with modern cold molds; everything's sealed in epoxy and glass. Compared to molded glass, weight drops and strength increases. Downside is cost, they can be more expensive not construftion and wait--usually you'll have to order a boatand partially pay for it a year or two before delivery.

And, you won't find many under 40' or so, as smaller boats are just too expensive to build with this method and Wood Epoxy Boat Construction Australia make a living at it. Ride one in rough seas and it's pretty easy to determine that they perform better than molded boats, cold molded wood boat construction engineer most cases, all other things being equal which, of course, they never are! Send a private message to Theultangler. Find More Posts by Theultangler.

Likes: 1. The only other cold molded wood boat construction engineer is the space in the cabin if you are looking for a smaller custom cold molded vessel 40 feet or. Between the large bow flare of most of the builders and the ribs of the frame, quite a bit of room is lost.

But if you enginedr looking for a larger vessel and have lots of money and months to wait it can be very rewarding to completely customize the boat for your needs. Send a private message to aftergolf. Find More Posts by aftergolf. Not entirely true: When fiberglass was firs invented, the resins needed high temperature and pressure to cure.

The molds were 'baked' in a oven, or somthing similer, until costruction resin had cured. The term 'cold-mold' was coined to differenate between the two types of resin and the resulting building process. Almost all boats built today fit the origonal definition of cold-molding, because of the low-temp resins used.

These days, 'Cold molding' refers to hulls that are built with a wood core,epoxy encapculated, then moldeed on both sides. The is no 'Mold' used; the hull is the mold. Hulls will be every bit as strong as a 'regular' hull, colr it sould be a bit lighter - so you will need less HP and get a bit better gas milage.

Cons - Wood, wood. If you leave any un-sealed holes, the wood will rot. If you take care of it, it will last just as long as a glass boat. Send a private message to Jerry-Rigged. Find More Posts by Jerry-Rigged. Consstruction 2 Likes on 2 Posts. Question for the guys that know more envineer boat-builiding than I do: I thought modern cold-molded process saturated the wood with resin during construction so that wood won't rot even if the fiberglass sheathing is compromised.

Descriptions here indicate that wood is merely encapsulated and make it sound like you end up with someting that isn't a whole lot different than cored construction. Can someone elaborate? Send a colf message to sr31aj. Find More Posts by sr31aj. The closest to 'totaly saturated' wood I am guessing would be thin, end grain balsa, cured under pressure. Most cold mold boats are built with mahogeny - either Okume lighter, most populer or Meranti better rot resistance.

The wood will soak up some of the epoxy, just as it will with paint or varnish, but it does not soak totaly. Also, the Fiberglass is usally several layers of thick cloth - you won't comprimize the glass with a swinging sinker or a wild gaff. The primary sorce of water intrusion is from accessorys and other 'stuff' that is screwed thru the glass and not sealed, or a thru-hull that is just sealed with a littleinstead of being over-drilled, sealed, and re-drilled.

Cold molded wood boat construction engineer, part of your yearly maintace will be to chech the hull for places that need touch up or repair. Cracked transoms should not happen on anyboat, but they. With an all cold molded wood boat construction engineer boat, you may be able to ignore a non-structrual crack, but on a wood core boat, they MUST be reapired properly.

Why would a foam cored boat being any less susceptible to water intrusion damage than wood? My understanding of almost all foam core materials is that they often degrade over time from heat boat being out in the sun and if exposed to cold molded wood boat construction engineer water over time they like woodwill effectively rot and lose their structural integrity just like wood which has been exposed to water.

Send a private message to luresdouble. Find More Posts by luresdouble. Wod 5 Likes on 4 Posts. A typical glass boat with wood stringers has the wood components assembled then tabbed or glassed to the inside of the hull. Problems occur constructkon there is a breach in the glass encapsulation and moisture enters and becomes trapped between these members and if conditions are right, rot will begin. Ebgineer encapsulating Wood Boat Construction Terms With all sides of all components prior to assembly, there are no exposed wood cold molded wood boat construction engineer that can be attacked by moisture.

Send a bost message to tobnpr. Find More Posts by tobnpr. MI Ben. Received 1 Like on constructino Post. I guess I could've searched before starting my own thread Interesting info. Send a private message to MI Ben. Timely thread. The 32' Jarrett Bay is a low production custom boat I spoke to the factory on Friday Based on the above seems like the 38' is probably the minimum size to get the benefits without the excessive cost.

Send a private message to bigdog Find More Posts by bigdog Alec Thigpen. Received 3 Likes on fold Posts. Cold molded boats using the WEST epoxy system are not only as strong pound for pound as all glass boats, they are simply beautiful. I was so impressed with a couple of friends Olympic Tornado catamarans built that way cold molded wood boat construction engineer I built my 4x8' lab sinks with plywood and WEST epoxy with a protective layer of mat and light roving and 20 years later, not a single occurrence of water intrusion into the wood.

I left everything clear and unpainted so any leaks through to the wood would show up immediately as a dark area. Those are some tough sinks!

They should easily last another 30 years at that rate.

You should know:

5" abyss as well as weighs 79 lbs. A freezer is inside an insulated box? Copycat. It takes about 50 feet of 1 x 8 play to put a building ! to assistance revoke errors!

Topics that will receive individual attention include epoxy resins, health and safety, fastening systems, spiling, planking, vacuum bagging, trimming, and fiberglassing.

A small side project will look at repair methods. Mike promises that this will be an energetic week with plenty to do, so come prepared to roll up your sleeves and put in six full days. For anyone contemplating the cold-molded approach for their own boat or, perhaps, to add to their boatbuilding business services, this course will be invaluable.

Introduction to Cold-Molded Construction Everything from approaching the project to techniques and materials. View The Fleet. Todd Warner Yacht design is a multi-faceted discipline requiring a full range of engineering, aesthetic, practical and regulatory considerations.

Schiada 43 Black Diamond. Prince 40 Launch. Wheeler 38 'Pilar'. Prince 58 Convertible. In a simple strip-plank hull the frame is an important part of the structure, and the strip planks, which are narrow�with a square section shape, are both attached to the frame and edge-nailed to each other. Boats were often built like this in the traditional manner and are still built without being encapsulated in epoxy. In more modern variations, there is more reliance on epoxy, fiberglass sheathing, and internal accommodations structures including bulkheads to support the hull, with framing reduced to a minimum.

Some of these vessels are essentially fiberglass boats with solid wood cores. Strip-planked wood-epoxy hulls are probably the most common type built today, as they are generally the most cost effective. Sheet plywood construction is the least common type, at least as far as larger sailboats go. Mostly this technique is used for smaller boats like dinghies, skiffs, and daysailers.

The one major exception are Wharram catamarans, which are usually built of plywood, and may or may not be coated in epoxy.

In a plywood boat of any size, a substantial amount of framing is needed, but construction otherwise is relatively simple and fast, as large sheets of plywood can be set in place more easily and quickly than many narrow planks.

Plywood construction does limit design options. Normally plywood hulls are hard-chined, although lapstrake construction�as seen, for example, in some very interesting Dutch Waarschip designs�can also be employed.

The third major variation, cold-molded construction, is more properly described as diagonal-veneer construction. Here the hull is composed of several layers of thin wood veneers that are laid up on a diagonal bias over light framing or a jig. The layers of veneer are oriented at right angles to each other and are glued together and stapled in place until the epoxy sets up.

Often there are one or more layers also oriented laterally at a degree angle to the diagonal layers. By laminating thin sheets of unidirectional veneer atop one another like this, a light monocoque structure that is strong in multiple directions can be created. These cold-molded boats are, generally speaking, the lightest of wood boats, but this method of wood construction is also by far the most labor intensive.

The technique is shunned by some, but is favored by those for whom weight reduction is critical. It is also sometimes used in conjunction with strip-planking, with layers of diagonal veneer laminated over a planked hull in place of fiberglass sheathing. This Wharram-designed Islander 65 catamaran is being professionally constructed of diagonal veneers Photo courtesy of James Wharram.

The hull of this large cold-molded yacht has diagonal veneers being laid over strip planking Photo courtesy of Hodgdon Yachts. The term cold-molded is something of an historical anomaly. The first laminated wood hulls were composed of veneers laid up in female molds and glued together with adhesives that could only cure in an oven.

The term is still used to describe diagonal-veneer hulls, but not other types. Technically speaking, any wood-epoxy hull laid up at room temperature can be said to have been cold-molded. Whatever they are called, wood-epoxy vessels in fact make superb cruising boats. The only problem is that wood-epoxy construction does not lend itself to series production.

If you want a new wood-epoxy boat, you must commission its creation as a one-off, and many people with money to burn have done just that. Many modern wood-epoxy boats are based on traditional designs but take full advantage of modern design and construction techniques to minimize weight and maximize performance.

Others are full-out modern superyachts measuring over feet in length and a few are flat-out race boats. Gusto , a Chuck Paine design, is a modern wood-epoxy cruising boat with more traditional lines Photo courtesy of Chuck Paine. Wood-epoxy boats can also, of course, be found on the used-boat market. Recently built boats are relatively rare and normally command a significant premium, but older boats, some dating back to the early s, are often quite affordable.

Be sure to have them carefully surveyed, however, as construction techniques have improved considerably in recent years. As with any older boat, there will likely be problems that need addressing. I love wood boats and have built my share over the years but one thing that is worth mentioning is that a wood boat behaves differently in the water compared to a fiberglass or boat built of other materials.

Martin Reid is the real deal. His materials are very informative and inspiring�an excellent investment for anyone who is interested in building boats. Mark: ahoy sir! The softer motion is due to the bigger moment of inertia the mass of the boat is spread out more. Kinder motion less seasickness seasickness is a major safety factor.

What are the exact things I will need to build this boat?

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