How to lay fiberglass mat

how to lay fiberglass mat

How to Fiberglass Over Metal

Mar 31, аи Click here to see this product & more on Mat is one of the most popular forms of reinforcement for non-structu. Dec 02, аи Be sure to follow the manufactures recommendations on mixing the hardeners with the resins. The best method for wetting out resin is to lay your mat on cardboard and pour resin onto the mat .

Laying up fiberglass to thicken or what the bible says about making fun of others a part is an easy process.

How to hack software license are always asked on how to properly build up fiberglass to thicken thin areas.

First what is sdlc waterfall methodology need to start with the prep work. Clean the area thoroughly with fiberglass. Making sure to remove all old oils, waxes, and paints. After the area is clean we need to roughen up the old fiberglass fibeeglass a good heavy grit sandpaper like 40 grit.

After every inch of old surface is ground away, we then clean the area again with clean acetone. It might be wise to vacuum any lose dust and debris to keep it out of our work area before fbierglass use the acetone. Next we get our glass mat ready and torn into the right size pieces. Be sure to tear all sharp edges to ensure a good bond, and to ensure there are no hard lines.

After all the glass is torn then it is time to mix our resins. Be sure to follow the manufactures recommendations on mixing the hardeners with the resins. The best method for wetting out resin is to lay your mat on cardboard and pour resin onto the mat till you have adequate saturation.

Then just pick up the resin infused fiberglass mat and place it onto the work area. Next we need to roll out all the air bubbles that are trapped in and under the mat.

Fiberglass rollers come in different sizes, shapes, and materials. Each designed for a different situation. You also can get metal or plastic rollers, with wood or plastic handles. But no worries if you dont have one.

You can use a paint brush, a squeegee, or go old school and use your fingers and hands. Lqy trapped inside of fiberglass doesnt allow the fiberlgass mat to sit completely flat and therefore causes the fiberglass to fiberglss bond and be a weak point.

If after the mat hardens you still find a bubble you can always grind it out. But be sure to keep it moving. Resins harden if you need them to or lah. You can add layers until the desired thickness of the part is reached. Or till gravity kickes in and your fresh layed mat falls from the weight. You do not have to let each layer dry out before doing another. If you do allow it yo dry out then you must resand and grind any burs or splinters before you can start laying glass again.

Search this site. Recent Announcements. Upcoming Seminars. Contact Us.


Jun 24, аи In this video, I show an example of laying fiberglass cloth in a mold that already has the gel coat painted in. Check us out on Facebook and "like" our fan p. Feb 15, аи Preparing and Glassing your Surface (Repair) Figure out how much resin you are going to use (assuming polyester). If you are fiber-glassing a one foot square area Prepare the surface to be fiber-glassed. You want to use a rough sandpaper and remove any paint, varnish, oil, and/or This is .

Fiber bonded with plastic resin has a long long history. As with many manufacturing techniques, fiber reinforced plastic came into wide use in the military. Part of the reason for this is the ease with which objects can be created by combining these two materials. It is also quite strong when compared with an equal weight of steel. Fiber reinforced plastics can be as much as six times stronger than steel at an equal weight. But the real attraction here is object made with this material require no high temperatures, a modest collection of tools, and best of all, very little prior experience.

In fact, if you've built a sandwich and painted with a brush, you know most of what you need to know about fiber-glassing. Fiberglass, as a term, is really a misnomer. Glass fiber is one of the many materials that can be used along with resin plastic to create a strong and light composite structure.

Those materials include glass-fiber of course , cloth cotton or man-made , carbon-fiber, non-woven glass or carbon mat, coir a coconut fiber , modal beech tree fiber , bamboo, and even hemp fiber.

After the war returning GIs began experimenting with the material in the form of car bodies and boat hulls. Sailboats were some of the first items built with this material and a few years later powered watercraft. Because so little was known about the strength of FRP in those years most of those items were "overbuilt. Ideal Hobby Material In many ways it is an ideal hobbyist material. With a bit of patience it is fairly easy to use with most of your effort going into preparation if not actual creation of the item.

No special tools are required. Not Much Dexterity Required There isn't that much dexterity required. If you can lay a sheet of fabric out and remove all of the wrinkles you are halfway there. If you can lay on a thick paint-like liquid without leaving behind any bubbles you are one hundred percent of the way there.

It is really pretty easy. Uses FRP can be used to make auto body repairs, boat repairs, or even to create new objects that have not existed before. Some examples of past FRP use include Eames bucket chairs, lamp-shades, decorative partitions, green house walls, and door panels just to name a few. If you've ever had or sat in an Eames bucket-style chair you know how strong and light they are. Strength Fiber reinforced plastic, by some estimates, is six times stronger than steel for the same weight in materials.

It is strong enough, in fact, for use in fiberglass swimming pools water is quite heavy and even fiberglass buildings. After a few questions regarding specifics about using fiber reinforced plastic techniques I thought it best to add this note. A Plethora of Possible Uses Though this article is roughly 3, words long it by no means covers every type of fiberglass application you can use.

It can't. The document would have to be at least one hundred times longer to cover every possible use and technique for a variety of situations. Repairs When making repairs to existing fiber-glass objects you only need to pre-wet the area with resin, add the fiber, and then re-wet the new fiber with resin.

For esthetics this is usually best done from the inside of the object. Strengthening Existing Objects If you are laying a new fiber cloth coating to a boat hull, or say a wooden deck, you don't want to pre-wet with resin, but you do want to let the cloth sit on the surface for a number of hours before adding the resin.

This is so the cloth conforms to the object. Only after all of the wrinkles are out of the cloth and it conforms to the object being strengthened then you add any resin. Even then you don't use a lot of resin. Only a small amount of resin about a 1 cup per ten square feet is required depending on the size of the object. Then you want to work the resin into the cloth as thinly as possible.

Work Inside Out If you are repairing a hull breach a hole below the water line of a boat you will want to repair from the inside of the hull, not the outside. To effect a good solid hull breach repair you'll have to make the inner hole three times the size of the outside breach to make an effective repair. The hole should be cone shaped too so that the outside of the breach is no larger than when you started. This is done to make the strongest possible repair to a hole. New Objects If you are making a new object you want to work from the outside in; just the opposite of above.

This does not even mention the necessity of a mold, what the mold is made of, and what you need to do to get the new object to release from the mold. However, you can make molds from wood, plasticine, or even existing objects. The mold will have to be perfect, smooth, waxed wax is a releasing agent and very clean.

This is not even the "tip of the iceberg" as to techniques; it all depends on what you are trying to do. Click to Zoom! You can see the glass cloth strips embedded in the plastic in this photo. Fiberglass is the actual cloth or mat made up of glass fibers. However this section will cover glass fiber specifically. Other Fibers The fiber in FRP does not need to be glass fiber either; it can be cotton, linen, bamboo, coconut fiber, beech tree fiber, or even hemp.

Carbon fiber is "burnt" Kevlar embedded in resin. So in actuality carbon-fiber objects are just another form of FRP. Well, almost everything. You'll need the right weather conditions or temperature and humidity, the right tools, and the right surface preparation to get a quality job.

Likely, you'll also need to know how long it takes for a piece to cure, when you can add to it, and how to protect it once it's finished. Weather is very important. Ambient temperature should be between sixty 60 and eighty-five degrees 85 Fahrenheit or between sixteen 16 and thirty 30 degrees Celsius. Temperatures below sixty 16 will mean extremely long cure times or no cure at all.

In fact if ambient temperatures are at or near freezing the resins won't cure at all. You do not want to layup an FRP job in the rain. Trapped moisture will not stop the curing process or even slow it down, but water bubbles in your layup can cause the layers to come apart months or years later. This in turn will compromise the strength of your creation so avoid if possible.

Note: I use yogurt cups, pudding cups, cottage cheese and cream cheese containers. I measure a set amount of water into one of the containers and use a permanent marker to draw a fill line on the outside of the container.

If you are using a polyester resin only the resin needs to be measured; the catalyst is a few drops of liquid. If using epoxy you must measure both the resin and catalyst so two measuring containers may be required. Resin is the large container; catalyst the small container. Basic Tools : You'll need sandpaper, acetone or denatured alcohol, tack cloth, distilled water, glass cloth, resin, mixing containers, and a paint brush or roller. Patience too. Tools are probably the cheapest part of this.

The cloth the next cheapest and the resin the most expensive of all the items required. I strongly recommend using Polyester resin for this first attempt as it is cheaper and more forgiving. Safety Wear : Since the resins are hard on your skin you'll want to gloves and eye protection. A long sleeved shirt, shoes, and long pants not shorts should be fine.

Cutting: I recommend an old pair of scissors. The cloth is much harder to cut with a knife though it can be done. Mixing Containers : Of course you'll want an accurate measurement of your liquid components, but you can get an inexpensive measuring cup at a paint or hardware store.

Save your money on mixing containers. Since you don't want to start out with a huge job you can do this with old margarine tubs, or other used food containers. Just be sure they are clean and dry. This way you won't feel bad throwing them out afterward either. The brush does not have to be the same high quality you'd use on a paint job because all you'll be doing is spreading the resin around.

Do not use a foam brush; it will melt with polyester resins. You'll use this to make sure all the air bubbles are out of your work. You could buy a specialized fiberglass roller, but they cost more than dowel, are harder to clean. A specialized resin rollers is only worth the cost if you are planning on doing a lot of FRP work. Wooden dowel, on the other hand, can be cut to the right width about six inches and thrown away without much worry.

Sandpaper : You'll want a 60 grit and a grit at least. If you are doing finish work work that will be painted use higher grits in the and range. Oil and grease will prevent the resin from sticking this is a hint about release agents so you don't want any residue, not even the oil from your hands, on the area to be fiber-glassed.

Acetone will remove most types of paint too so start with alcohol until you gain some experience. Final Cleaning: Your final cleaning of the FRP surface will require a tack rag and distilled water and lint free cloth.

This is probably not really necessary, but I always go this extra step and have never been sorry. There is a wide range of cloth that can be used for the fiber component.

The most commonly thought of for FRP is fiber-glass, but you don't really have to stick with that for project that don't require a lot of strength. Cotton, hemp, wool, kevlar, carbon-fiber, in fact any natural or human-made material that will bind with the resin will work well as the fiber part of the FRP.

It doesn't even have to be woven cloth; it can be a "felted" cloth with no weaving. Strength If the object you are creating or reinforcing needs to be strong then the cloth component should be woven.

There are no comments on this entry....