0000003099 00000 n It is typically used between 1.25% to 1.75% (1 2/3 ounce to 2 1/3 ounces per gallon). Darker colors need a little more catalyst for the same reaction, so you can catalyze up to 2%. Dock, Cabin and 2007 Beavertail Opsrey - 2017 Suzuki DF60A. 0000003724 00000 n 28.4cc Catalyst Amount by CC Catalyst Concentration by CC (Volume of Catalysts to be Used with Polyester Intro How to properly measure MEKP for your polyester resin, gelcoat and more Hold Fast Marine -DIY tips and tricks- 4.68K subscribers Subscribe 289 10K views 1 year ago HOLD FAST MARINE Have. Supplies, Boston Whaler, 1972-1993, Apply gel coat to mold surface. If you want to roll on a gelcoat, be sure to use a 1/8 or 14 solvent-resistant nap. Hardware, Boat Trailer 2. gelcoat needs a surface seal of some kind to inhibit air on the surface. Video, GPS Chartplotters & All the essential pizza ingredients the crust, sauce, and cheese contain a lot of salt. However, neither they nor any Catalyst Chart can provide the exact ratio by WEIGHT. Use these calculators and mix very small batches until you achieve the desired result. Starters, Marine Solar Power A good practice is to pour the mixed gel coat from the mixing container into another container used for application. The correct ratio is 11cc per 1/2 gallon. When a production boat is made in a female mold, the gel coat goes in first, directly against the waxed and mold release coated mold. Gel coat is typically the first layer of a part to be applied. How much hardener is in a quart of resin? startxref endstream endobj 140 0 obj <>/Size 114/Type/XRef>>stream The cc and oz values in the chart have been converted from weights of MEKP to volumes of MEKP. & Dock, Anchor Chains & Adding cured meats such as pepperoni or sausage adds even more sodium. Most re-sprayed gelcoat will cure in 2-4 hours, although overnight cures are ideal. All Gel Coats from Bottom Paint Store come with MEKP with each gelcoat purchase. How long do you wait between coats of gelcoat? Deals, Dealer Easy! I believe the 12:1 was written for 72 degree F days. Once you mix and catalyze, you have about 15 minutes to apply the gelcoat before it starts getting hard or starts togel. The actual working time depends on the amount of catalyst and how hot the working conditions are. How to mix Fiberglass Resin & Clean Tools. FREE MEKP Calculator for Quarts and Ounces. Cushions, Lexington Apply gel coat to your part. I do suggest you start small. Below are some things to consider when trying to figure out how many drops of mekp is 1 oz of gelcoat. Good news! .75 oz X 38 Wide Fiberglass Cloth (Style #106), .75 oz X 38 Wide Fiberglass Cloth (Style #106) per yard, 1.5 oz x 50 Wide Fiberglass Cloth (Style #108), Customer Project Spotlight: 1956 Dundee Boat Refinish, Good, Better, BestResins For Your Project, Singing in the Rain- ProGlas 1000 Epoxy Resin Art Tutorial. All, Boat Bimini What is brushable gelcoat? If you decide to Double or Triple the Volume to do a larger project or portion, the Calculator does the math for you! Add 14 drops of liquid hardener per 1 oz. The secret to a good finish is to apply the gelcoat properly. 100 ml at 1.5% is 1.5ml MEPK etc. Add 2% MEKP catalyst, by volume: 14-16 drops per ounce, or 2 teaspoons per pint. The resin's reaction starts with the addition of MEKP at 0.5% to 1.5 % (2 % for thin laminates). Mix thoroughly to ensure that all gel coat is properly catalyzed. How many Oz is a slice of pizza? xref Be even and consistent in your gun movement, overlapping each previous pass slightly and not hesitating on the ends. Duratec is for a cosmetic high gloss finish. In the meantime, you might find this article helpful: Gel Coat Application Guide - How to apply gelcoat correctly (fiberglasssupply.com) Last edited: Jun 1, 2022 Accessories, Boat Lift Canopy Gel Coat Instructions - Marine Gel Coat Repair Product | Marine Products There are 2 thinners that are recommended by the manufacturer when spraying gelcoat: Patch Booster, and Duratec. 0000001926 00000 n Winches, Boat Motor Supports & Less MEKP gives a slower cure, more gives a faster cure. Parts, Sacrificial Anodes & Its best to do a 4-foot by 4-foot area at a time. Lay on the gel coat in a heavy thickness (about 10 mils) using horizontal strokes, and working from top to bottom. (1 pint) 1/4 ounce: 32 oz. This is about polyester gel with MEKP hardener. Location. 0000015094 00000 n You should also feather the surrounding area of the gel coat repair with 220/330. Sandable time: Depends on temperature, amount of catalyst, and mass of fairing compound. I used acetone and sanded off the old gelcoat. Trolling Motors, Shop Measures Chart (Example - 1 Gallon = 231 Cubic Inches and The MEKP Calculators by WEIGHT are Dead-On when it comes to precision and Superior to any Catalyst Chart. 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. Webbing Solution is a clear liquid added to gel coat to obtain spatter or cobweb effects. AN 0000030992 00000 n 0000007919 00000 n 0000000016 00000 n Depending on the amount of resin needed, pour the appropriate ratios of polyester resin and MEKP into a heavy-duty plastic tub or bucket. The higher the temperature, the less hardener you need. How Many Drops Of Mekp Is 1 Oz Of Gelcoat 625 CC per ounce of gelcoat. RESIN, Quarts. Varnish, Marine Adhesives, Locks, Boat Deck Covers, Boat Wiring & Mixing out of the above range will result in a weaker cured resin. Insurance, Boat The cabin top is 9 feet wide by 10 feet long (910=90 square feet). Spraying gel coat is recommended for more accurate and consistent coverage. Mike, Your email address will not be published. Gelcoat Repair Part 2: Mixing and Application. Check the temperature of the Gelcoat stock and insure that it is not below 70F. As nouns the difference between catalyst and hardener is that catalyst is (chemistry) a substance that increases the rate of a chemical reaction without being consumed in the process while hardener is one who, or that which, hardens. Gelcoat without wax is used when you have a different method selected to cure it. tube of liquid hardener (MEK Peroxide) is sufficient to harden the entire contents of a gallon container. It is typically used between 1.25% to 1.75% (1 2/3 ounce to 2 1/3 ounces per gallon). Lighting, Marine Teak Plumbing, Fresh Water Boat The minimum recommendation from Dow is 1% MEKP to resin by weight, with a maximum of 2.5%. Refer to the catalyst chart located on the product page for the gelcoat you are using or follow the label guidelines. For use as a final coat over fiberglass layups or for repairs, this gelcoat cures to a hard, glossy surface. . Resins that have Duratec in their name require a 2% mix ratio (2 2/3 ounces per gal . 0000001553 00000 n Acessories, Fishing Outriggers & 0000002777 00000 n rQ{.Z7. i[wk. 75 degrees F. Does gelcoat need wax? Software, Digital Example: 20-30 minutes @ 77F for a 100g mass catalyzed with 1% MEKP. Add air dry wax (the wax will rise to the surface, creating that barrier), or if it's a small enough area tape a polyethylene film over it (zip lock bag.) 0000006580 00000 n They are sturdy and smooth on the inside to help with complete mixing. Anything below 60 degrees, and your gelcoat will not cure, but as you get warmer and warmer, your working time will decrease rapidly. 0000023127 00000 n Add a New List . Mix the polyester resin with a catalyst named methyl ethyl ketone peroxide (MEKP) to begin curing. More features, tools? The thickness of the matchbook cover is approximately 18 mils. Accessories, Big Jon of Gelcoat w/o Wax = 1/4 oz. We recommend 1.5% - 2.0 % by volume. Do not work in direct sunlight. (108 in . There are also disposable cup liners available that you can insert into the plastic Poly-Pro graduated cup or paper cup. Apply the gelcoat using a brush or spray gun. 0000009357 00000 n Copyright 2019 IBOATS. Preparing the Surface for Application: Next, youre going to have to clean the surface. Application of Marine Epoxy Primer to a Boat, How to Identify the Type of Paint on My Boat, Using a Signal Coat Indicator for Repainting Ablative Antifouling Paint, Testing for Compatibility of Topside Paint with Awlgrip Topcoat. Charts & Add the MEKP . (1 quart) 1/2 ounce to 1 ounce: 1 gallon: 2 ounces to 4 ounces: Important Note. You will develop a repeatable and scalable process. Polyester resins and gelcoats require the addition of MEKP (Methyl Ethyl Ketone Peroxide) catalyst to cure in a desired amount of time. xb`````Uc p7T,T30H3r``dHbecatXbuk(Y7jc>#`9in4; @Qn gg`(g ` 7 0000001127 00000 n ENCLOSED: Dropper bottle that will yield the exact ratios referenced on this chart when mixing small amounts. Gelcoat is available with or without wax. Parts, Boat Tubing & Specific gravity MEK peroxide How much does a gallon of polyester resin weight? 2Oz is recommended for 1Gallon of Gel Coat or Resin. You can over-spray with PVA before gel coal reaches its gel stage (5-10 min. They are flexible enough to make pouring easy. You should catalyze your material so that it cures as quickly as possible within your working time. When MEKP is mixed with polyester or vinylester resin, the resulting chemical reaction causes heat to build up and cure or harden the resin. Do you need to add catalyst to resin? Oz = fluid ounce . Description. Combos, Fishing Tools & Quantity. Find many great new & used options and get the best deals for Veterinary Formula Clinical Care Ear Therapy 4 oz. Generally speaking, for Polyester Resins, the mixing ratio is 2% i.e. & Live Bait Parts, Rule 1500 GPH Automatic trailer I don't know if age effects it or not. t,efR*o*3nsq5#eRY^_~Y-j8oC/vFTvH*S 0000012247 00000 n For a better experience, please enable JavaScript in your browser before proceeding. Fasteners, Boat Windshield Marble, Engine Grills, Boat Drink As soon as you are done spraying, clean your sprayer fully with acetone. If these products were left to sit on a shelf for a long period of time (many months or even years) they would eventually cure on their own. Ideal for touching up scratched gelcoat. When spraying to a radius, flow the gelcoat to the tape. Biminis, RV & Trailer For example, if you are using a conventional spray gun, you should set the pressure between 30 and 50 psi. 0000022629 00000 n Hardware, Boat I liked using 19 drops per oz on my second try (more catalyst is specified when gel coat is mixed with wax . Usually 320 or 400 grit wet paper is sufficient for the initial sanding. 7-Eleven Large Pepperoni Pizza. Downs, Couplers, Mounts, You may purchase this item if you desire additional . See this article for more information: How to Apply Gelcoat by Brush and Roller. How many drops of MEKP is 1 oz of gelcoat? Compound and polish with Aquabuff 2000 then happy a wax such as Collinite 925 UV for protection. 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. MEKP %. & Circuit Keeping good notes will help you build a database of initiator levels for temperatures that you encounter frequently. Sand it down with 80 grit sandpaper until it's flush with the surface of the fiberglass. You should find a warmer spot to move your piece such as room or working office. You need to stick to the 1:1 ratio that is measured by volume. for Sale, Buy A 1 ML = 1 CC; Thanks, Refer to the catalyst chart located on the product page for the gelcoat you are using or follow the label guidelines. Switches, Shore Power & AC Kits, Boat Trailer The drops fogged vision in right eye versus using simple artificial tears. What happens if you put too much hardener in resin? I am going to be making some small repairs which will require my working with about a table spoon spoon of gel coat at a time, How much hardner ( Drops ) will I need to mix with a table spoon of gel coat to get a proper cure. Please follow the instructions located on the products page or the label. Ft. @ 10 Mils), Catalyst Concentration by CC (Volume of Catalysts to be Used with Polyester It is only when mixed with an epoxy hardener that they can cure properly. This morning not even tacky and hard enough to sand already! The heavier fast-cut grits (40/80/100) are used to feather sand and ground out a routed area prior to filling. Tops, Other 0000002082 00000 n of wax; and 1 gal. Usually 12 drops per ounce of gelcoat or 1.8% at 77F. 0-2.2% MEKP based on the weight of the resin). Do not use more than 1 oz tint per quart. Clean the repair area and all tools with acetone prior to application. Screws, Boat Handles, Pulls, Turning brown or even worse your mixing jar catching on fire. Spraying Gelcoat delivery rate of no more than 2.5 pounds per minute with conventional air atomized spray, and no more than 4 pounds per minute with airless equipment. Use 6 drops of catalyst into 10ml of resin. usually a material called surfacing agent (wax/styrene) or P V A. Outdoor Hub, LLC (d/b/a Carbon Media Group), 30800 Telegraph Rd, Suite 1921, Bingham Farms, MI 48025 USA. Finish/topcoat with. Gelcoat will not fully cure without adding a surfacing agent or wax additive sanding aid. See more Since manufacturer specs change often due to formula updates be sure to follow the most recent recommendations from the technical data sheets. Mix thoroughly for at least one minute and apply immediately after. Let the polyester filler cure until material is firm and tack free, about 10 minutes. Enter the amount of Resin in quarts then adjust % of MEKP using the slider. Rafts, Paddle Terminals, Marine Fuse Blocks & How many drops of MEKP is 1 oz of gelcoat? Now, Shop When the surface is clean, you want to get moving fairly quickly; if the surface is sitting for some amount of time, you want to re-clean the surface. Otherwise, there will be only one coat. How much hardener should I use? I used the other MEKP and it seemed to be working and got a tad bit on my skin and could feel it burning a little. 2. Accessories, PWC Parts & This further assures that no uncatalyzed material is clinging to the sides of the pot. This will accurately measure the proper amount of catalyst. Deals, Pumps & Plumbing Instruments, VHF Radios & 625 CC per ounce of gelcoat. Systems, Lowrance Hook2-4 GPS Conversely, you will need moreMEKp for cooler temperatures. CREATE Gelcoat without wax is commonly used for laminating gelcoat in stages, or when applied onto a waxed mold, where fiberglass (or another reinforcing fabric) saturated in polyester resin is laminated onto the unwaxed gelcoat. & #3. 2 What is Topcoat? MEKP Hardener 1 oz. All, Anchor & 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. Depending on the orifice size of the bottle your using 10 drops could equal .5cc, 1cc, 1.5cc.. using a $0.89 syringe is cheap insurance to me. Maintenance, Boat Cleaners & Tops, Bimini Top startxref If you add too much then you risk it burning. xbbb`b`` 2 The Fora platform includes forum software by XenForo. . We all have a phone with a calculator so that makes this process even easier. Gelcoat should not be used when temperature conditions are below 60F, as curing may be adversely affected. Gel Coat requires the addition of fiberglass resin hardener or catalyst (MEKP) at 1.8% by volume (77F) (approximately 12 drops per ounce), Measure catalyst accurately. One gallon will cure approximately 100 gallons of resin and 50 gallons of gelcoat. To catalyze TotalBoat Polyester Laminating Resin, at 77F, add 7-8 drops of MEKP catalyst per one fluid ounce of resin. That is what target for. Generally, one heavy coat is sufficient. 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. Sanding between coats is not necessary unless a surfacing agent has been added to your gel coat. Spraying gel coat is recommended for more accurate and consistent coverage. = 1.17 polyester resin= 1.09 gelcoat = 1.3, Equivalent For a better experience, please enable JavaScript in your browser before proceeding. At 77F, TotalBoat Gelcoat requires the addition of 2% MEKP catalyst, by volume: 14-16 drops per ounce, or 2 teaspoons per pint, for a working time of 10-15 minutes. Distribution, ProMariner ProNautic If you dont see the blue dye again, you know youve sanded it all properly. This is one of the questions Bottom Paint Store is asked the most.Lets start with explaining that gelcoat is not a paint but a type of resin that is used to provide a protective layer over fiberglass. This works on every single polyester product, not just the amazing products at totalboat. Also, they are used for the first sanding of gouges, dock dings, scratches, and blisters. Patch booster is used with a 5:1 ratio or about 20% by volume. 1 What is Gelcoat? The ratio is dependant on air temperature, resin thickness, temperature of resin and mold. If adding pigment do so first and thoroughly stir in mixing well before adding catalyst, be careful not to under or over pigment. The warmer the temperature the less MEKp you would to activate the gelcoat/resin. 0000003502 00000 n Use 3M Abrasives for best results. Mix 2-3% of MEKP Hardener into the Gel Coat. 0000003263 00000 n The total area to be glassed is 90 square feet. When mixing MEKP with resin, take care as a violent mixing action can splash it out of the mixing container. Use a gelcoat thickness gauge to ensure proper thickness is achieved. We suggest a thickness of 18-20 mils to properly cure. We recommend 1.5% 2.0 % by volume. Riptide Terrova 80 Trolling Motor w/i-Pilot & Bluetooth, Inflatable Accessories, Electronic Navigation Then scale up!! For example, four drops of hardener will be 1 percent of 1 ounce of resin. Ideal range is 1.8% @ 77F. Instantly, you will gain predictable results. You will need to thin the gelcoat for it to run through the spray gun. No catalysts are needed. Put the bottle in the sun or in front ofa lamp to reliquify. Acessories, Fish Cleaning Specific gravity MEK peroxide = 1.17 polyester resin= 1.09 gelcoat = 1.3 Equivalent Measures Chart (Example - 1 Gallon = 231 Cubic Inches and will cover 160 Sq. The weight of MEKP 925 is 1.125 grams per cc. Beside this,how many drops of hardener do i need for gelcoat? Apply gel coat in 4-5 layers at approximately 5 mils each, allowing 15-20 minutes between layers for a total thickness of 20-25 mils. Covers, Boat Cover 0000002707 00000 n Thanks for the help. We sell. Rollers, Boat Trailer then sanding the gel coat down starting with 150, 220, 400 wet and 600 wet. of Gelcoat = 2% 3% is the Maximum ratio. Smoke Approximately ten drops of MEKP to each 1/2oz. Or UPGRADE! will cover 160 Sq. I purchased the gel coat which is matched to my color hull from Ranger boats and purchased MEK ( catalyst ) from O'Riley. Boarding, Paddles & How Many Drops Of MEKP Is 1 Oz Of Gelcoat? Note: All gel coats and resins from the Bottom Paint Store include MEKp with the applicable size of gelcoat/resin. Gelcoat should be applied at temperatures of 60F to 80F. This item has a shelf life of approximately 2-3 months. It will take a minimum of two coats of gelcoat if you are changing colors. Mix thoroughly for at least one minute and apply immediately after. You will have between 5 and 10 minutes (longer in cold weather) to apply the gel to the mould. Approximately eight drops of MEKP to each 1/2oz. Protection, Ladders, Steps, & 0000010798 00000 n hry/ %qSB>JdM|}gvei8=sY<9Y'W`g09tkJLNf B3!^Oil d6m|uM} p{ql+s,S'. We encourage the use of Acetone, because it does not leave residue and evaporates easily. Similarly,how many drops of hardener do i need? For spraying gelcoat our FGCI brand does not recommend thinning. Can you mix resin in paper cups? The cabin top width is 108 inches. 7. Description. 0000017788 00000 n Thinning Sea Hawk Gel Coat Gel coat may be thinned up to 10% with Sea Hawk 7125 Gel Coat Thinner, or 25-33% Sea Hawk Patch Aid 8185. Start by sanding the surface with 150 grit or sandpaper. 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. Only catalyze slightly more than needed. Fishing Lures, Fishing Rod Holders & 2 Oz is recommended for 1 Gallon of Gel Coat or Resin. Galley, Barbeque Keep in mind that it is best to mix in small quantities. . 1 TBS = 1/2 oz. 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. Otherwise, one coat will do. Accessories, Boat 0000002243 00000 n 1.25. as this one is). Keep in mind that you have a limited time to apply what you have mixed (usually between 5-15 minutes). 0000001050 00000 n You have a work time of approximately 15 minutes. You could also go to a local pharmacy such as CVS and ask for a few. I want to say poly resin needs 10 drops of MEKP per 1 oz. Failing to do so will result in the resin not hardening as it should. . MEK, short for MEKP, is the "Hardener" or catalyst for Polyester Resin and Vinylester Resin Systems including Isothalic and Gelcoat. Wells, Toilet & Waste It usually will not adhere to these surfaces. 0000002941 00000 n Going up to 400, then 600, and eventually 800 grit sandpaper. Be sure not to use foam rollers because they tend to leave the bubbles. therefore by my calculations you'll need 10 drops. The color wet is the color when dry. Racks, Fish Finders, Sounders Ropes, Boat Duct tape off adjacent gunwale molding, and deck fittings you are unable to remove. Well it was not cured this morning after applying it last night which is either one of two things old hardener that came with the gelcoat or not enough hardener. Practice and prepare!! This should be added after all other additives just prior to application. Gelcoat that is . your boats Gel Coat Match, Shop The amount of MEKp that you add to gelcoat and resin will vary with outside weather conditions. Dollies, SportsStuff Great Big Click Here. We have all done it in a pinch, but there's a quicker way. This time element is dependent on material temperature, room temperature, humidity, air movement, and catalyst concentration. Honda 5hp Outboard, Boat xb```a`` Now, once again, I know that we have been using 0.75% for our recommended minimum, and that has been successful all these years. Mixed 3 new ounces of gelcoat and put between 1.8-1.9 cc's (0.625 cc's per oz) of MEKP in the mix for two minutes. At this point, the repair is ready to prep and spray/brush with gelcoat. Bottom Paint Store Blog How to Articles. 114 28 The Volumetric Calculators above are GREAT tools. Each of these coats of gelcoat may involve several passes. Under or over catalyzation retards curing and causes fading and chalking. Professionals, Boat Restoration, Building, and Hull Repair, Shop 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.

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