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The Boating Forum. Thread Tools. Senior Member. Cold molded wood boat construction unit 14 Likes on 8 Posts. View Public Profile. Send a private message to mmbv Find More Posts by mmbv Likes: 2. Received Likes on Posts. RE: cold molded built boats. Hi, I'm no expert, but here is what I understand.
Cold molded wood boat construction unit fiberglass boats have layers of fiberglass laid in molds after gelcoat is applied.
Curing in the mold is suppose to be superior and helps the hull retain shape over it's life. Cold colld uses no constructlon, and several usually 3 layers eood thin veneers are applied to create the shape. There are various adhesives to hold the veneers in place.
The boat is then fiberglassed. Molds are expensive to build, and cannot be justified for a one wooden dinghy plans inc or limited run.
The output is usually high quality, but there is a wooden substructure that could get wet if the hull is damaged. If so, you 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, higher 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 wooden dinghy plans inc you will find plenty of info out. Send a private message to dannyroche. Find More Posts 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 always 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 make a living at it. Ride one in rough seas and it's pretty easy to determine that they perform better than molded boats, in 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 disadvantage 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 are looking for a larger vessel and have lots of money wooden dinghy plans inc 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 wooden dinghy plans inc high temperature and pressure to cure. The molds were 'baked' in a booat, or somthing similer, until the resin had cpnstruction. The term 'cold-mold' was coined to differenate between the two types of colc and the resulting building process.
Almost all boats built today fit the origonal definition of cold-molding, because of the low-temp resins cold molded wood boat construction unit. These days, 'Cold molding' aood to hulls that are built with a wood core,epoxy encapculated, then fiberglassed on Wood Ship Construction Workers both sides.
The is no 'Mold' used; the hull is the mold. Hulls will be every bit as strong as a 'regular' hull, but 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.
Received 2 Likes on 2 Posts. Question for the guys that know more about boat-builiding than I do: Wooden dinghy plans inc 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 ,olded whole lot different than cored construction.
Can someone elaborate? Send a private message to sr31aj. Find More Posts by sr31aj. The closest to 'totaly saturated' wood I am guessing would be thin, end grain balsa, cold molded wood boat construction unit under pressure. Most cold mold boats are built with mahogeny - either Okume lighter, most populer or Meranti better rot resistance.
The wooden dinghy plans inc will soak up some of the epoxy, just as it will wpod 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 moldee water intrusion is from accessorys and other 'stuff' that is screwed thru the glass and not constuction, or a thru-hull that is just sealed with a littleinstead of being over-drilled, sealed, and re-drilled.
Also, 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 composite 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 cold molded wood boat construction unit in the sun and if exposed to enough 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. Received 5 Likes on consteuction 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 when 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. By encapsulating all sides of all components prior to assembly, there are no exposed wood surfaces that can be attacked by moisture.
Send a private message to tobnpr. Find More Posts by tobnpr. MI Ben. Received 1 Like on 1 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 3 Posts. Cold molded boats using the WEST epoxy system are not only as strong pound for pound as all wooden dinghy plans inc boats, they are simply beautiful. I was so impressed with a couple of friends Olympic Tornado catamarans built that cold molded wood boat construction unit that 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 wooden dinghy plans inc and unpainted so any leaks through to the wood would show up immediately as a dark area. Those are some tough sinks! They should construftion last another 30 years at that rate.
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