May 7, 2007. %%EOF The most common sticky problems are: Tacky, Sticky Resin: the problem occurs when two components A and B are measured and mixed inaccurate or curing in cold temperatures. I do suggest you start small. We sell. Furniture, Boat Seat Pedestals & At 77F, adding 14-16 drops of MEKP to one ounce of TotalBoat Polyester Fairing Compound will provide a working time of 10-15 minutes, and will cure in 20-30 minutes. The specific gravity of MEKP is 1.045. Below are some charts to help you figure out how much MEKP will be needed for the project. Do the math, and that yields 0.96cc per 100g of resin for 1% and 2.4cc for 2.5%. Description. example6oz resin times 2%= .12 times 30 = 3.6 cc of MEKP8oz resin times 1%= .08 times 30 = 2.4cc of MEKP6oz gelcoat times 2%= .12 times 30 = 3.6 times 2 = 7.2cc of MEKPRemember to use my discount code at www.totalboat.com code: TBholdfastsubscribe to the channel, and don't forget out patron https://www.patreon.com/HoldfastmarineMEKP dispenserhttps://fiberglasssupplydepot.com/MEK-DISPENCING-BOTTLE.htmlPolyester resinhttps://www.totalboat.com/product/polyester-laminating-resingelcoathttps://www.totalboat.com/product/gelcoatfairing compoundhttps://www.totalboat.com/product/polyester-fairing-compoundMEKPhttps://shop.hamiltonmarine.com/products/fiberglass-hardener-mekp-organc-peroxide-clear-gal-15046.html#holdfastmarine #totalboat #fiberglasssupplydepot Darker colors need a little more catalyst for the same reaction, so you can catalyze up to 2%. Seats, Fishing Boat Covers, Boat Wiring & How Many Drops Of Mekp Is 1 Oz Of Gelcoat 625 CC per ounce of gelcoat. MEK, short for MEKP, is the "Hardener" or catalyst for Polyester Resin and Vinylester Resin Systems including Isothalic and Gelcoat. Systems, Marine Plumbing ounce of gelcoat will give you 2% ratio at gel time of 20 to 30 minutes at. In this video I show you how to use some basic math to accurately measure the correct amount of MEKP for your polyester products. Insurance, Boat 0000001050 00000 n Mix thoroughly to ensure that all gel coat is properly catalyzed. 8 drops 16 drops 16 drops Add the MEKP to the Gelcoat before thinning. Use the recommended thinners/additives only which are listed on the gelcoats product page. of Gelcoat = 1.5% @ 75F. Caulking, Marine Engine I would forget the drops and using ounces. However as at least one third of the gelcoat is particulate and not resin a mix of just 1.oo % should be fine. Use milliliters its easier to do the ratio math. For really small repairs I would mix 1 ounce of gelcoat with 12 drops of catalyst or in your case 16 drops which is a really small amount. 0000006855 00000 n Most re-sprayed gelcoat will cure in 2-4 hours, although overnight cures are ideal. Marble, Engine Gel time at 1.8% MEKP is 10-17 minutes. Accessories, Boat Lift Canopy This is what I use- 60 to 65 degrees 3 %, 65 to 70 2.5%, 70 to 75 2%, 75 to 80 1.5%. They range from a 1:1 ratio, like with our Table Top Epoxy, to our standard laminating epoxy allowing a 1:1, 2:1, 3:1, 4:1 and 5:1, allowing for different ratios that effect hardness and gel time. How much hardener is in a quart of resin? 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MEK, short for MEKP, is the Hardener or catalyst for Polyester Resin and Vinylester Resin Systems including Isothalic and Gelcoat. Using 38 inch wide cloth, Mr. Smith needs three 10 ft. pieces. Savers, Boat Trailer Guides & How Many Drops Of MEKP Is 1 Oz Of Gelcoat? Dust and dirt particles are your enemy here, so make sure you clean the surface thoroughly.Determine whether you need one or two gelcoat coats. Winches, Boat Motor Supports & 625 CC per ounce of gelcoat. & Dock, Anchor Chains & Forums, Find Be sure to have a good strategy when applying your gelcoat. This is about 1% which is tuned for 80 degrees or higher. If the surface is already coated with gelcoat, or if the surface is a fiberglass or polyester resin, then the application of gelcoat is a snap. If there is a trim color, you should have a narrow trim brush on hand. Prepping the Surface: Remove rails, cleats, louvers, snaps, striping tape, etc. Practice and prepare!! Good news! 0000001127 00000 n Again I'm not a fan of "drops" because its super subjective. For example, four drops of hardener will be 1 percent of 1 ounce of resin. If applied onto a floor without the hardener, the resin would remain a near liquid indefinitely and could not transform into a durable flooring system. rQ{.Z7. i[wk. Shelters, Boat usually a material called surfacing agent (wax/styrene) or P V A. 27. Manager at store told me to run 10-12 drops per oz of gelcoat I mix up. 0000022891 00000 n We encourage the use of Acetone, because it does not leave residue and evaporates easily. Covers, Other Beside this,how many drops of hardener do i need for gelcoat? First, decide if you need one or two coats of gelcoat. Get a proper measuring cup and syringe and use cc's or ml's for both. Mix thoroughly for at least one minute and apply immediately after. You will need to thin the gelcoat for it to run through the spray gun. Mix for a minimum of three minutes and make sure to scrape down the sides and the bottom of your container to get everything in. Adding more of less of the catalyst agent will speed up or slow down the curing time for the resin. How long do you wait between coats of gelcoat? This will accurately measure the proper amount of catalyst. This is a simple, easy way to see the thickness of your gelcoat. Do not use any other wax additive when using Patch Booster. Is pepperoni high in sodium? Let the polyester filler cure until material is firm and tack free, about 10 minutes. Sanding between coats is not necessary unless a surfacing agent has been added to your gel coat. 0000003380 00000 n If you change colors, it will require at least two gelcoat coats.If this is going over a patch, at least 2 coats are recommended to get a uniform surface. You need to stick to the 1:1 ratio that is measured by volume. Accessories, Boat That is what target for. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. That's the problem. Find many great new & used options and get the best deals for Veterinary Formula Clinical Care Ear Therapy 4 oz. If you're doing a larger project and counting drops of catalyst is not an option, base the amount of MEKP required on the weight, not the volume, of the resin. of Gelcoat w/o Wax = 1/4 oz. Hardware, Boat Seats by Measures Chart (Example - 1 Gallon = 231 Cubic Inches and Deals, Electronics Pumps, Livewell Aerator Pumps Category, View 0000000016 00000 n It is also needed with all gel coats. Eric Boudreau 1 year ago Updated TotalBoat Polyester Laminating Resin requires the adding of MEKP catalyst at the ratio of 7-8 drops of MEKP per one ounce of resin at 77F (1 .0-2.2% MEKP based on the weight of the resin). Starters, Marine Solar Power Thanks, Gain access to PREMIUM Calculators by WEIGHT when you subscribe today. Parts, Sacrificial Anodes & 0000015094 00000 n Measurements need to be exact so you can be confident the gelcoat is mixed properly before applying it to the surface. If you decide to Double or Triple the Volume to do a larger project or portion, the Calculator does the math for you! Gelcoat can take as much a 2x the amount of MEKP as resin. 1 fluid Oz equals about 30ml if memory serves, so if you want 2% you would need 0.6ml of MEKP per oz of gel. There are a couple of possibilities though, one is with so little catalyst needed it will get hard no matter what the end user does, two maybe most people just use small amounts and with a short gel time it won't drain out as much and the other reason has to do with resin chemistry. Accessories, PWC Parts & Acessories, Fishing Outriggers & Now, once again, I know that we have been using 0.75% for our recommended minimum, and that has been successful all these years. 100 ml at 1.5% is 1.5ml MEPK etc. What is brushable gelcoat? Large quantities will exotherm and kick off very fast, leaving you with a smoldering mess in your cup. Sign up for newsletter: You've just added this product to the cart: FIRST QUALITY FIBERGLASS MATERIALS AT A PRICE YOU CAN AFFORD! Gel Coat Instructions - Marine Gel Coat Repair Product | Marine Products 0-2.2% MEKP based on the weight of the resin). Protection, Dock Storage & TotalBoat Polyester Laminating Resin requires the adding of MEKP catalyst at the ratio of 7-8 drops of MEKP per one ounce of resin at 77F (1. Depending on the amount of resin needed, pour the appropriate ratios of polyester resin and MEKP into a heavy-duty plastic tub or bucket. When mixing small batches, catalyze with 12-18 drops hardener per ounce of gelcoat. If it is in the 60's use 2.5 cc/ml or 50 drops for 2% MEKP. of wax; and 1 gal. Read all warnings on product labels and only use additives recommended as described per each product. 0000018032 00000 n Measure catalyst accurately. Smoke Using the drop method, 4 drops are used. & Rings, Prop Nut Kits & As soon as you are done spraying, clean your sprayer fully with acetone. 2. gelcoat needs a surface seal of some kind to inhibit air on the surface. as this one is). Hardware, Marine Polyester requires a 1-2% hardener ratio depending on temperature, so mixing 10 grams of gel at 1.5% means you have to measure 0.15 grams of MEKP. 0000023817 00000 n What would make this better and more useful? Honda 5hp Outboard, Boat Use a gelcoat thickness gauge to ensure proper thickness is achieved. Gelcoat needs to be applied evenly. Downs, Couplers, Mounts, See this article for more information: How to Apply Gelcoat by Brush and Roller. 114 28 Bottom Paint Store Blog How to Articles. At 77F 1.8% MEKP will provide a gel time of 10-17 minutes. It is typically used between 1.25% to 1.75% (1 2/3 ounce to 2 1/3 ounces per gallon). Similarly,how many drops of hardener do i need? Telescopes, Covers and Combos, Fishing Tools & Get all the latest information on events, sales and offers. Products, Carbon Monoxide & then sanding the gel coat down starting with 150, 220, 400 wet and 600 wet. Use 3M Abrasives for best results. Racks, Fish Finders, Sounders Accessories, Pontoon Bimini FGCI s Brushable Gelcoat is a unique proprietary product with excellent leveling characteristics, allowing application by paintbrush or roller without leaving brush marks or streaking. Rollers, Boat Trailer Does resin need hardener? All Gelcoats from the Bottom Paint Store comes with the MEKP catalyst but additional amounts can be purchased. Gel coat will not fully cure without adding a surfacing agent or over spraying with PVA. ), or add 1oz per quart/ 4 oz per gallon of wax additive sanding aid. Terminal xref I tried 12 drops of MEKP Catalyst per oz my first try in about 80 degrees F. Then I found a MEKP Catalyst pdf with great instructions. If thinning is needed for gun/nozzle used then Patch Booster is a additive that will thin out gelcoat and not affect colors, such as acetone or styrene. Hardware, Boat Seat Find many great new & used options and get the best deals for 3 PK REFRESH LIQUIGEL Lubricant Eye Gel 0.50 oz NIB EXP. For use as a final coat over fiberglass layups or for repairs, this gelcoat cures to a hard, glossy surface. Once gel coat has tacked up, about 20 minutes after final layer has been applied, lay-up of the part can begin. 0000007919 00000 n Compound and polish with Aquabuff 2000 then happy a wax such as Collinite 925 UV for protection. It will take a minimum of two coats of gelcoat if you are changing colors. of Gelcoat w/o Wax = 2-4 oz . When MEKP is mixed with polyester or vinylester resin, the resulting chemical reaction causes heat to build up and cure or harden the resin. endstream endobj 140 0 obj <>/Size 114/Type/XRef>>stream Platforms, Slide Shop online or request a free catalog. Resins MEKP - Number of cc per Volume), Catalyst Concentration by Add 2% MEKP catalyst, by volume: 14-16 drops per ounce, or 2 teaspoons per pint. Helm Seats, Shop If one CC is roughly 30 drops as stated below that would put me at roughly 18.75 drops of MEKP per ounce of gelcoat. Since manufacturer specs change often due to formula updates be sure to follow the most recent recommendations from the technical data sheets. 30 seconds, ensuring to scrape bottom and edges of the mixing container. Another option is you can use an 800 grit compound for the gelcoat at this stage. What happens if you put too much hardener in resin? Video, GPS Chartplotters & 0000023127 00000 n Can you mix resin in paper cups? We recommend 1.5% 2.0 % by volume. . endstream endobj 115 0 obj <>/Outlines 1 0 R/Metadata 14 0 R/PieceInfo<>>>/Pages 13 0 R/PageLayout/OneColumn/StructTreeRoot 16 0 R/Type/Catalog/LastModified(D:20130606150718)/PageLabels 11 0 R>> endobj 116 0 obj <>/Font<>/ProcSet[/PDF/Text]/ExtGState<>>>/Type/Page>> endobj 117 0 obj [118 0 R] endobj 118 0 obj <>/A 132 0 R/F 4/H/I/StructParent 1/Border[0 0 0]/Type/Annot>> endobj 119 0 obj <> endobj 120 0 obj <> endobj 121 0 obj <> endobj 122 0 obj <> endobj 123 0 obj [/ICCBased 133 0 R] endobj 124 0 obj <>stream If the gelcoat does not get enough catalyst it will not kick or begin to harden. Applying Gelcoat by Brush or Roller: Choose a good pure (natural) resin-resistantbristle brush with tapered ends. Keeping good notes will help you build a database of initiator levels for temperatures that you encounter frequently. It's important that the fiberglass is clean before you gelcoat over it. All, Anchor & The ratio is dependant on air temperature, resin thickness, temperature of resin and mold. 2Oz is recommended for 1Gallon of Gel Coat or Resin. The heavier fast-cut grits (40/80/100) are used to feather sand and ground out a routed area prior to filling. Oars, Wakeboard, Wakesurf & The amount of catalyst may be adjusted in small, incremental amounts, either upward or downward, to account for temperature differences (more for cooler temperatures, and less for . You want to use a buffer that turns 1600-3000 RPM. Rafts, Paddle Holders, Cabin Accessories & Initially spray a cover coat as smooth and evenly as you can to cover your repair. Free shipping for many products! Gelcoat is available with or without wax. In open flat areas, layer passes. Description. 0000022629 00000 n We have all done it in a pinch, but there's a quicker way. If the gelcoat is in good condition with no major cracking or crazing, the job is relatively straightforwardclean and prepare the surface, apply an epoxy primer, sand the primer, remove the sanding residue and then apply the topcoat. Remove seals from the edges of parts or fittings when doing a repair around that part or fitting. Method of Application: Next, determine if you are going to brush, roll or spray your gelcoat so you can prepare the gelcoat for application. List Name . If you add too much then you risk it burning. Mixed 3 new ounces of gelcoat and put between 1.8-1.9 ccs (0.625 ccs per oz) of MEKP in the mix for two minutes. If you need more time to work, be sure to sit the can in some cold ice water to cool it down to 60 degrees to allow you a little more working time. 0000001463 00000 n Once the coating (gelcoat) has cured, it should be block sanded using 250 wet grit paper to remove all brush marks and high spots. of MEKP to 1 gallon of polyester resin. 0000001107 00000 n Product is flammable, use caution! 0000009357 00000 n There are simply too many variables. Cups are are wax coated. Duct tape off adjacent gunwale molding, and deck fittings you are unable to remove. Usually 12 drops per ounce of gelcoat or 1.8% at 77F. You should find a warmer spot to move your piece such as room or working office. Man I hope its working. 0000013646 00000 n 0000001832 00000 n The normal ration of resin to catalyst is just over 1% but should not go over 2.5%. <<2369ebe0f6fbc740aa2d803257e02535>]>> I liked using 19 drops per oz on my second try (more catalyst is specified when gel coat is mixed with wax . Methyl Ethyl Ketone Peroxide (MEKP) MEKP is a clear hardener/catalyst for the room temperature cure of unsaturated polyester and vinyl ester resins. It is typically used between 1.25% to 1.75% (1 2/3 ounce to 2 1/3 ounces per gallon). 0000030800 00000 n Our technicians suggest the use of Dyekum Steel Blue Dye to be really thorough. How much hardener should I use? Here is the formula written out, remember products OTHER than resin require almost double the amount of MEKP to catalyze gelcoat, repair putty or fairing compound, for all your boat repairs or boat builds.Ounces of resin, times the percentage required of mekp times 30 equals the cc's required. MEKP can be added to polyester resin in the range of 1 to 2% by volume or weight.
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