To cure properly and completely, gelcoat needs to be devoid of oxygen. Detectors, Binoculars & MEKP Hardener 1 oz. Add 2% MEKP catalyst, by volume: 14-16 drops per ounce, or 2 teaspoons per pint. Accessories, Boat When mixing small batches, catalyze with 12-18 drops hardener per ounce of gelcoat. Mix in the MEKP at 1-1.5% and see if it works ok on a test panel. The ratio is dependant on air temperature, resin thickness, temperature of resin and mold. Be even and consistent in your gun movement, overlapping each previous pass slightly and not hesitating on the ends. This works on every single polyester product, not just the amazing products at totalboat. When rolling on gelcoat be sure to use a 1/8 or 14 solvent-resistant nap. Keep in mind that you have a limited time to apply what you have mixed (usually between 5-15 minutes). For use as a final coat over fiberglass layups or for repairs, this gelcoat cures to a hard, glossy surface. Add 14 drops of liquid hardener per 1 oz. In this video I show you how to use some basic math to accurately measure the correct amount of MEKP for your polyester products. Biminis, Paint and Oz = fluid ounce . Video, GPS Chartplotters & Measurements need to be exact so you can be confident the gelcoat is mixed properly before applying it to the surface. 0000001279 00000 n Software, Digital 0000003724 00000 n Duct tape off adjacent gunwale molding, and deck fittings you are unable to remove. Its best to do a 4-foot by 4-foot area at a time. Holders, Cabin Accessories & **NOTE** Duct tape is recommended over masking tape because it provides better protection. Starters, Marine Solar Power I want to say poly resin needs 10 drops of MEKP per 1 oz. d23 ?P90. Use 3M Abrasives for best results. Deals, Pumps & Plumbing For each teaspoon (1/6 oz) of blended gelcoat paste, add four drops of hardener. Polyester resin is not nearly as forgiving as epoxy so you really gotta be on the money with the mix. trailer Tags: MEKP > MEKP for gel coat > gel coat catalyst > gel coat hardener > hardener for gel coat > 132662 > 132661. This is the amount of Catalyst you will add in Ounces. 0000000016 00000 n No catalysts are needed. The percentages in the chart: 1% thru 2%, are percentages of resin or gelcoat by weight. 0000013646 00000 n Measure catalyst accurately. 06/2024 at the best online prices at eBay! Again I'm not a fan of "drops" because its super subjective. Gelcoat Repair Part 2: Mixing and Application. How many drops of Polyener resin are in an ounce of hardener? You can over-spray with PVA before gel coal reaches its gel stage (5-10 min. MEK, short for MEKP, is the Hardener or catalyst for Polyester Resin and Vinylester Resin Systems including Isothalic and Gelcoat. Stir well. 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. The cc and oz values in the chart have been converted from weights of MEKP to volumes of MEKP. The heavier fast-cut grits (40/80/100) are used to feather sand and ground out a routed area prior to filling. Be sure not to use foam rollers because they tend to leave the bubbles. Boarding, Paddles & Mix the resin VOLUME To achieve the correct 2:1 mix ratio by volume, simply measure out 2-parts resin to 1 part hardener before mixing the components. startxref and gelcoat needs twice as much catalyist. 0000002941 00000 n Mixing thoroughly is just as important. 0000001899 00000 n RESIN, Quarts. Deals, Paint & Maintenance When working on the deck or cabin, tarp off the adjacent areas. First, decide if you need one or two coats of gelcoat. 7. 0000001107 00000 n 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. OUNCE 20 DROPSWhen using Surfacing Wax with your resin/gelcoat, youmust also add the MEKP(Hardener). Beside this,how many drops of hardener do i need for gelcoat? Under or over catalyzation retards curing and causes fading and chalking. 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 Galley, Covers and 0000004021 00000 n Thank you! Use the spreader to add the . Initially spray a cover coat as smooth and evenly as you can to cover your repair. If you want to roll on a gelcoat, be sure to use a 1/8 or 14 solvent-resistant nap. Dollies, SportsStuff Great Big 0000001926 00000 n That sounds about right. = 1.17 polyester resin= 1.09 gelcoat = 1.3, Equivalent Biminis, View 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. How many drops of MEKP is 1 oz of gelcoat? Systems, Lowrance Hook2-4 GPS 0000002707 00000 n Adding more of less of the catalyst agent will speed up or slow down the curing time for the resin. Conversely, you will need moreMEKp for cooler temperatures. If the gelcoat does not get enough catalyst it will not kick or begin to harden. When MEKP is mixed with polyester or vinylester resin, the resulting chemical reaction causes heat to build up and cure or harden the resin. Otherwise, one coat will do. 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.) Be sure not to use foam rollers because they tend to leave the bubbles. Part # PBBR-.5 ( oz dropper) Mixing cup will give exact measurements for larger volumes in CC and ounce increments. Below are two FREE MEKP Calculators and a MEKP CHART to simplify the process of determining the proper ratio of resin to catalyst or gelcoat to catalyst. Enter the amount of Resin in quarts then adjust % of MEKP using the slider. Catalyzing Gelcoat with MEKP: All gelcoat MUST be catalyzed with MEKP to cure. Boat Gel Coat - Spectrum Color, Pumps and How do you know how many ml's per drops you are getting? 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. Please refer the to Catalyzation chart on the Gelcoat page or on the label. Pumps, Marine Pump Replacement Adding cured meats such as pepperoni or sausage adds even more sodium. 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. 0000006234 00000 n Kits, Seadog Stainless Steel Cup Use one or the other. oops! MEKP speeds up the curing reaction of the polyester resin in these . Bullet Skimmer, Paint and Why is my resin not hardening? Following this, it should be wet sanded with 320, 400, and 600 wet grit paper, buffed, polished and waxed. Once the coating (gelcoat) has cured, it should be block sanded using 250 wet grit paper to remove all brush marks and high spots. The drops fogged vision in right eye versus using simple artificial tears. Boat, Boat Buyers Location. Only catalyze slightly more than needed. Platforms, Slide For example, four drops of hardener will be 1 percent of 1 ounce of resin.How much hardener do you add to polyester resin? On their own, epoxy resins are very stable fluids with relatively long shelf lives. Apply gel coat to your part. Plumbing, Fresh Water Boat We suggest a thickness of 18-20 mils to properly cure. xref 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 Hardware, Boat This will accurately measure the proper amount of catalyst. 0000000872 00000 n Resin that cures still in the mixing pot is unusable. 28.4cc Catalyst Amount by CC Catalyst Concentration by CC (Volume of Catalysts to be Used with Polyester . then sanding the gel coat down starting with 150, 220, 400 wet and 600 wet. If you brush on the gel coat, make sure to use a solvent-resistant brush. 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. of Fiberglass Resin (or for can of Fiberglass Resin, use tube of liquid hardener). %PDF-1.4 % I only go to 1% at 85 or above or if I'm doing a large panel or an intricate piece and need a little more pot time. Trailer Winches, Shop xbbb`b`` 2 Have an abort strategy!! Wells, Toilet & Waste A forum community dedicated to Small Skiff owners and enthusiasts. When spraying to a radius, flow the gelcoat to the tape. 2Oz is recommended for 1Gallon of Gel Coat or Resin. Thanks in advance for your help. Free shipping for many products! Here is an Old School MEKP Chart for Download if you prefer. May 7, 2007. For Dogs & Cats Free Shipping at the best online prices at eBay! Put the bottle in the sun or in front ofa lamp to reliquify. 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. Grills, Boat Drink PFDs, Roof Racks, Carriers, If you have Professional Grade Exterior Gelcoat you may either brush/roll or spray. Marine Coat One Iso/Npg Marine Gel Coat White with Wax with MEKP Catalyst for Hardening, Plus 6 Color Tinting Pigments for Your Perfect White Match (1 Quart) 4.4 out of 5 stars 352 3 offers from $33.99 Please follow the instructions located on the products page or the label. What happens if you put too much hardener in resin? Can I spray gelcoat with an airless sprayer? . Fishing Lures, Fishing Rod Holders & How to Apply Gelcoat by Brush and Roller. Professionals, Boat Restoration, Building, and Hull Repair, Shop Epoxy activators are all proprietary, depending on the product. . How to choose the right bottom paint for my boat, Painting Your Boat with Interlux Bottom Paint: A Step-By-Step Guide. HWnF}WK 0000006580 00000 n Sign up for newsletter: You've just added this product to the cart: FIRST QUALITY FIBERGLASS MATERIALS AT A PRICE YOU CAN AFFORD! I do suggest you start small. Mix the polyester resin with a catalyst named methyl ethyl ketone peroxide (MEKP) to begin curing. 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. What is brushable gelcoat? It may not display this or other websites correctly. 0000000836 00000 n For a better experience, please enable JavaScript in your browser before proceeding. We suggest a thickness of 18-20 mils to properly cure. All, Boat Bimini of wax; and 1 gal. The cabin top is 9 feet wide by 10 feet long (910=90 square feet). Financing, Iboats Epoxy resins come in two seperate componants. Looking for Feedback. Parts, Boat Tubing & This is a simple, easy way to see the thickness of your gelcoat. Add a New List . Two Versions are available both Ounces and Pounds. GPS Chartplotter and Fish Finder Combo, Find Kits, Boat Trailer 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. Check color thoroughly before applying. The correct ratio will appear below. This is about 1% which is tuned for 80 degrees or higher. Instantly, you will gain predictable results. 0000002777 00000 n This further assures that no uncatalyzed material is clinging to the sides of the pot. Similarly,how many drops of hardener do i need? We have all done it in a pinch, but there's a quicker way. Example: 20-30 minutes @ 77F for a 100g mass catalyzed with 1% MEKP. 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. Parts, Sacrificial Anodes & Registered User. MEK, short for MEKP, is the "Hardener" or catalyst for Polyester Resin and Vinylester Resin Systems including Isothalic and Gelcoat. ACCOUNT, Find Then use a rubbing compound to remove the rest of the scratches. Gel coat will not fully cure without adding a surfacing agent or over spraying with PVA. If you decide to Double or Triple the Volume to do a larger project or portion, the Calculator does the math for you! 30 seconds, ensuring to scrape bottom and edges of the mixing container. Gel coat is a polyester resin and uses MEKP as the catalyst. You can measure the fluid ounce (s) of resin in a clean mixing cup. Terminals, Marine Fuse Blocks & Deals, Trailering Gain access to PREMIUM Calculators by WEIGHT when you subscribe today. Do you sell MEKP? Poly products need to be sealed from air to fully cure. Battery Charger, Marine Audio & Caulking, Marine Engine (#69-A) unit can be shipped via standard ground service without hazard charges within the 48 contiguous United States. Spraying gel coat is recommended for more accurate and consistent coverage. 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. That's the problem. Covers, Other Ft. @ 10 Mils) 1 Fl. Covers, Boat Wiring & %PDF-1.4 % It's important that the fiberglass is clean before you gelcoat over it. rQ{.Z7. i[wk. Under- or over-catalyzed gel coat will cure slower and look faded or chalky. Use a gelcoat thickness gauge to ensure proper thickness is achieved. cloth = 2.84 or 3 pieces). The Volumetric Calculators above are GREAT tools. 0000017788 00000 n Gelcoat can take as much a 2x the amount of MEKP as resin. Add 2% catalyst to your chosen quantity of gel coat, stir very thoroughly and note the time. 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.
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how many drops of mekp is 1 oz of gelcoat