Check out this video tutorial on how to make a fiberglass mold layup for car speakers. To begin making a fiberglass mold, you must first have or make a plug. For the Rhino canister mold however, I need a rigid mother mold, and here's why. The process is fairly simple provided you plan ahead and follow all … Press EZ- ShellMaker™ around the mold so that it conforms tightly to the shape of the mold. Place two saw horses 6 feet apart. I think it helps the cut seam line up in the mold. Fiberglass is a great material to make objects with, but as fiberglass cloth is soft until painted with resin, it is difficult to use without a mold. The gun used in this video is just a very cheap method of spraying gelcoat on some of my smaller molds. I cut the stockinette long enough so that I could double it over. Here I've mixed up polyester resin with an activator (and violet dye), and brushed it all over the stockinette until it's saturated. Once all sectioned have been fully cured, trim and smooth out the sharp edges. Once the resin has cured you can pull the fiberglass mold from the foam pattern. Rubber mold making is a vital skill to master if you plan on producing resin parts or any other cast part. Building a boat mold is one of the first steps in building a fiberglass boat. A very simple and easy-to-use container for making many types of molds is a paper cup. When demolding, carefully remove the mother mold from the antlers. In order to have a form from which to develop your mold, you must either build the article from scratch using wood, plaster, polyester putty, formica, sheet metal, etc. There was just an open hole there and the rain was… Fold the edges that protrude past the mold back and rub smooth. To make the actual fiberglass component, the mold then receives ample coats of release wax, gelcoat, which imparts the color to the part, and as many fiberglass laminates as the design parameters call for. Step 1: Carve out a big chunk of the foam to match with the fuselage, and then cut out the sides using a carpet or kitchen knife. a fiberglass backup Mother Mould. so that the gas mask will be comfortable to wear, which holds the mold and rotates it in two different axis at the same time. Cut off excess resin or fiberglass with a metal cutting blade. Lay two 2-by-4s, 8-feet long, on top of the sawhorses to create an 8-foot work space. I tend to draw mine perpendicular from one another as a matter of preference. The top picture shows the blue silicone rubber mold after it has been removed from the popcorn cup. A plug for a fiberglass or composite mold is typically a representation of the finished part, and can be an actual part or a mock up of a part. So I think the fiberglass is a bit of overkill for my purposes. Any imperfections in the plug surface will be transferred to the mold, and then to future parts made from that mold. Due to the fact that I need the cast part to be as lightweight as possible (so that the gas mask will be comfortable to wear), I am going to make it hollow, and the most efficient way to do this is in a rotocasting machine (which holds the mold and rotates it in two different axis at the same time). Repeat this process to add 4-5 layers for small objects and 10 or more layers for larger items. Making a Fiberglass Mold. Coat the latex & kklay with Vaseline. These pictures document the procedure for making this. The first step in fiberglass mold making is to make a plug. Fiberglass Mold Making - Plugs. The plug must be exactly what you want to copy since it is representative of the final product that will be produced from your mold. Jul 24, 2016 - A fiberglass mold is rather simple to make, but it takes a few days. This will allow sufficient time for the fiberglass mold to cure. Jul 24, 2017 - This is how I make my fiberglass mother molds. The plug is an exact representation of the object to be fabricated. The idea of a mold is to make a replica of the item that you need. Oct 15, 2016 - A fiberglass mold is rather simple to make, but it takes a few days. A plug is the original item that the fiberglass mold will be taken from. This will allow you to take your time to produce the perfect mold before setting the fiberglass on it. The other is the cut along the silicone glove mold that allows you to remove the model and all the subsequent castings. For most castings, the paper cup will work also as the mother mold, keeping the mold parts tightly together while the liquid resin cures. In short, the process involves building a plug, which is an exact duplicate of the boat you want to build. In planning for the mold certain factors must be taken into consideration; surface finish, draft angles, undercuts, and method of production. ?æ#ðƒ &áÐرS"w ^EÎH!_S ¶ÝˆC?¨‰¡IÇñÓ1!Å;Á^3(•ˆ. The fiberglass mold-making process begins with an object known as the plug. I'm sure there are many different ways to make this, this is just the way I do it. And here is the final result after it has cured, with the rigid mother mold on the right. Then you want to put your model on a piece of wood with at least 5 inches or so of room around the bottom of your model. 2 Think of a mold for your fiberglass. Some things I figured out, some not so much and I was hoping you or others could help fill in some blanks. Mold Making Process Poured Molds This page is a collection of videos to help acquaint you with the basic mold-making process. It looks like the source is where the outboard motor control cables pass through in the cockpit foot well wall. Often the mother mold serves another purpose as well, that of containing the liquid rubber while it cures into a solid. Mar 28, 2016 - This is how I make my fiberglass mother molds. When making a silicone rubber mold (into which is cast resin) there is typically a supportive outer shell, called a mother mold. Making a Fiberglass Mother Mold. Mark lines on your latex mold where the seems will be for you fglass. The idea of a mold is to make a replica of the item that you need. – I don’t need these molds to last forever - in fact I’ll probably trash it after a few copies. Drill 1/4'' holes in all of the flanges for the bolts. Add a bit of resin and you have strong, durable, flexible fiberglass. If you are making fiberglass for project, like a simple box, bowl, or other shape, you probably want to assemble a "mold" or "form" to make sure that your fiberglass, which starts off in liquid form, adheres to the right shape. Always use PVA (or equivalent) on your plug surface before molding. If you are interested in learning more about the process we cover some of the aspects of building plugs on this page and we documented the process of making a longboard skateboard mold from scratch on this page . Prepare the plug and then laminate a fiberglass shell around the plug. Build up your seams with kleen klay. That way the latex rubber won’t absorb into it making it tougher to peel off after your mother mold (fiberglass shell) is done. For the fiberglass mold to hold its shape, it is recommended to leave the mold to dry for several days after the final coating of resin is added. oܒ¾Ä Below is a list of materials that are used in plug and mold making when making fiberglass or composite molds or tooling and links to the catalog pages for the items we carry. In this video series we will show you how to make a plug for a fiberglass mold. Use fiberglass to strengthen the mother mold section, allowing each portion to set completely before continuing. or you must have on hand a completed article which you wish to duplicate. For fresh molds you must put several layers of wax on and I would consider PVA as well if the mold is less then a week old. Place the wetted EZ- ShellMaker™ over the back side of the mold. Sand gently until you can see the line between the mold and the plug. Making Small Fiberglass Parts...: There has been a small but obnoxious rain leak in the aft cabin of my small sailboat. The first thing you should do is make sure your model your making a mold of is sealed. Rough cut the sides with the knife to complete the shape and sand to achieve the perfect shape. To make a latex mold, start by applying a layer of latex to your chosen object and letting it dry for 30 minutes. One of the primary keys to success in mold construction is proper preparation of the plug. 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