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19.05.2021Author: admin

One Off Fiberglass Foam Core Boat | Fiberglass | Hull (Watercraft) To build one fiberglass boat, it is often said, you must in fact build two boats: the finished product and the mold from which it springs. With a female mold, you normally build three boats to get one--first a male plug on which the female mold is formed, then the mold, and finally the boat itself. Sep 11, �� Boat Construction Comparison. What you need to know about how your boat is made. By Rick Strand. September 11, New Boating Law Requires Use of Engine Cut-Off Switches The risk of increased costs and lost time on the water associated with using plywood in a new fiberglass boat are far too high to buy one using them. Sep 13, �� for a single boat, it just aint worth it. It is a very very expensive process and unless you intend to use it to build many many boats it is a waste. building a one-off hull using a foam or plywood core fully encased in fiberglass can result in a boat that is both lighter and stronger than a comparable mass produced boat.
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Solittle Fleet Admiral. Joined Apr 28, Messages 7, Build a plug, then a mold and pop um out. Well - - there is a tad more to it - - you might do a bit of research on how the manufacturers do it to get an idea on what is involved.

Joined Mar 6, Messages There's big bucks tied up in molds they're expensive to produce and maintain and are meant for mass production. Joined Feb 12, Messages 1, Why would you want to do this? I'm all for learning, but is that the best approach for your end goal not sure what that is from your post? Molds are produced for mass production. There is no reason to build a mold. But now I'm wondering what it would cost to build an offshore fisher type for overnight trips up and down the river.

Could one be built for a lot less than, let's say, a Crownline or other mass produced Cabin cruiser? Joined Feb 8, Messages 6, Wouldn't you be better off to start with something like that? Don S Honorary Moderator Emeritus. Joined Aug 31, Messages 62, Joined Mar 26, Messages 4, I don't have the site available, but if you google Bruce Roberts i'm sure it will turn up.

He is a world renowned designer of larger yachts, I think the smallest thing he has is about 28 feet and they go up to well over feet. As for the feasability of developing a mold It is a very very expensive process and unless you intend to use it to build many many boats it is a waste.

It just takes alot more man hours to complete. My wife and I are tossing around several plans from different designers right now. We know we want something classic, it must have a cabin, it must be trailerable. C-Flex Fiberglass Planking Manual. We have designs which are especially adapted to these methods and have detailed them accordingly. We do NOT recommend taking our other designs with the intention of using one of these methods unless they are specifically intended for fiberglass construction.

Our plans detail clearly the best method for building each particular boat. I am part of a southern gospel quartet here in Ft. I am inspired by your love for our Lord and also your love for boat building as I grew up building boats for my family Merritt Sportfishing yachts here in Florida. Hope we might talk one day. Do you have any diagrams of your models? Thank you to responding so quickly. Your email address will not be published. Notify me of new posts by email.

This site uses Akismet to reduce spam. Learn how your comment data is processed. Quality builders often use limited amounts of S-glass to reinforce certain heavily loaded areas of a hull or deck, but only rarely do you see an entire boat built out of it.

To make something as large as a boat out of liquid resin and floppy fabric, you need a mold to shape and support the materials until they solidify. In both cases, multiple layers of fabric are built up into a laminate, and after the resin in all the layers has set up hard and cured, the now solid part can be separated from the mold.

When working with a male mold you are building up laminate from the inside out; the outermost layer goes on last, and if you want the outside of your boat to look nice and shiny you must fair and polish the exterior surface afterward. With a female mold, the outermost layer goes on first. Either way you must take the trouble to fair and polish the entire surface at least once. But with a female mold you need do it only once though some intermediate cleaning and polishing is required and can then pop multiple fair-skinned boats from the mold thereafter.

This is why production builders always use female molds. They also use gelcoat, a thin coat of resin thickened with colored pigment, as the very first layer in the laminate so boats emerge from their molds prepainted as well as prefaired.

One advantage of fiberglass construction is that it facilitates the creation of complex hull shapes. But some shapes are still easier to form than others. One reason production sailboat builders favor the modern canoe-shaped flat-bottomed hull with low deadrise is that it is an extraordinarily simple One Off Fiberglass Boat Construction Report shape to mold. You do have to bolt on a keel afterward, but that is a relatively simple matter of drilling holes and installing fasteners.

A classic full-keel shape with lots of deadrise and deep bilges, by comparison, is more problematic since it is often impossible to extract a deep, narrow keel from a one-part mold, no matter how carefully the mold is waxed beforehand. To ensure success a two-piece mold is often used, so the molded part can be more easily released by separating the halves of the mold.

It is also difficult to properly lay up and wet out fiberglass fabric in a deep mold with hard-to-access spaces. In other cases, with tumblehome hulls, for example i. Molds themselves, of course, must also be created. To build one fiberglass boat, it is often said, you must in fact build two boats: the finished product and the mold from which it springs.

With a female mold, you normally build three boats to get one--first a male plug on which the female mold is formed, then the mold, and finally the boat itself. Capital costs, therefore, are quite high, which is why truly custom one-off fiberglass boats are One Off Fiberglass Boat Construction In quite rare.

It is possible to build fiberglass boats cost-effectively, but only if many boats are born of the same mold. This is what is unique about fiberglass construction. As late as the middle of the 20th century, boats were always built one at a time. Since the advent of fiberglass, however, boatbuilding has increasingly become an industrial process as opposed to a craft. The biggest builders these days can churn out hundreds--or even thousands--of boats a year on massive assembly lines studded with computer-controlled robots that do everything from spraying gelcoat into molds, to cutting hatches and drilling holes for fasteners in decks, to cutting, trimming, and even varnishing interior woodwork.

But even on the most automated production line, a lot of manual labor is still needed for a boat to be built properly. Given the relatively small market for new sailboats, there is also a surprisingly large number of small builders who still build only limited numbers of boats using little automated machinery.

For many in the industry boatbuilding is primarily a labor of love; to them boatbuilding will always be an avocation and never just a business. Generally, however, the companies with the best long-term chances of survival are those that focus on economic reality and production efficiency.




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