A custom car audio box is necessary in a vehicle to protect the system and to provide a good clean space. Most of today’s boats are built using fiberglass as the main material and molding as the method of building.
You may also want to read the Fiberglass Guide before you start working on your mold or find an appropriate boat plan to build mold form.
To prevent your mold from sticking to the plug, the plug must be coated with plastic film known as “PVA”. When the gelcoat has cured so that it cannot be scratched off with the fingernail at the edge of the mold, which takes from 2 to 4 hours to overnight in cool or humid weather, you are ready for the “skin coat.” This is a layer of ? or 1oz. Depending upon the condition of the mold surface, it may have to be sanded with 220 grit working up to 600 grit wet or dry. Location: The Netherlands For bonding (ply)wood to polyester, grind down the gelcoat of the polyester, and glue with epoxy glue.
Before you glue the wood to the polyester, coat it several times with epoxy resin, then paint with 2K PU paint. Tremblay 228 » Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Search this Thread Advanced Search Similar Threads Thread Thread Starter Forum Replies Last Post fiberglass boat building? When making potentially dangerous or financial decisions, always employ and consult appropriate professionals.

Once this fiberglass gels, I trim the excess with a sharp utility knife and let the mold cure to its full hardness.
Staying up with my Fiberglass Project Posts, Tips and Tricks and time saving ideas on your desk top is quick, simple and NO EMAIL ADDRESS NEEDED. Rick D’Louhy and I continue to ferret out little known publications and booklets from the early and mid 1950’s on how to build a fiberglass car body.  After all, this was a time when sports car excitement was growing daily, automobile enthusiast magazines were sprouting up everywhere, and the new wonder material, fiberglass, was going to make the dream of owning a custom sports car a reality for every young man in America. If someone was selling copies under a tree in Mojave, California (if there were trees there) – no one would know about it and its relevance to history would be minor – a footnote at best.  Having specific dates for release of each of these books to the public was critical to establishing a lineage of books and when they became available to the public for sale. After several years of compiling books, booklets, pamphlets and ads showing specific dates when these books were advertised for sale, we can confidently share the following list of early publications and when they appeared in print.
Here's The Book That Started It All - Eric Irwin's 1952 Book - First Made Available to the Public in August 1952 - Four Months Ahead of Everyone Else!
If you intend to build an enclosure, you will need some essential facts and information before you build it, otherwise something may go wrong, and you could end up wasting your materials. In this video i will take you through the steps on making a fiberglass subwoofer enclosure for 2 subs. Usualy there is a huge negative mold for every boat part that used when the boat is put together and this negative mold is used to make positive molds. You must either build a part from scratch using wood, plaster, polyester putty, sheet metal, etc.

Since I will be joining the two halves of the helicopter, I don’t pull the pieces from the mold until I am ready to join them.
To finish this project I catalyze about 4 oz of resin and pour it along the inside of the seam that divides the two halves of this copter.
Boxes can be built in many shapes, but it is important that the box volume is calculated accurately to achieve maximum performance.
For the subwoofers there are very many types of box enclosures and they include a sealed enclosure. Since this is a fairly large item, I do two layers of 1 ? ounce mat to provide a little strength without the part getting too heavy. Molds are also made from fiberglass and are covered with a perfect layer of molding gelcoat.
The plug is generally a male model (a positive model) exactly like the item you wish to build in all the details. Boat builder than applies some molding wax over the glecoat and polishes it so it will later on be easier to remove the part form the mold.

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