Gelcoat needs to be applied evenly. 3M and UV tapes , and masking papers are recommended. Start by sanding the surface with 150 grit or sandpaper. You can over-spray with PVA before gel coal reaches its gel stage (5-10 min. Gelcoat is significantly heavier than Resin because of the fillers and pigments added. Boat, Boat Buyers If adding pigment do so first and thoroughly stir in mixing well before adding catalyst, be careful not to under or over pigment. See more MEKP Catalyst Quantity Chart - Fiberglass Warehouse The Volumetric Calculators above are GREAT tools. Gel coat will not fully cure without adding a surfacing agent or over spraying with PVA. Do the math, and that yields 0.96cc per 100g of resin for 1% and 2.4cc for 2.5%. For a better experience, please enable JavaScript in your browser before proceeding. 2. 5. 4|#8sReSSq"la;&2%9(HC}cL1eM4%1wEo Remember to always lap wet. Switches, Shore Power & AC The ratio is on the hardener container. 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. Pumps, Marine Pump Replacement You should catalyze your material so that it cures as quickly as possible within your working time. Mekp is too hard to measure by drops to me, so I use a syringe and do it by ml instead. Products, Carbon Monoxide & Parts, Sacrificial Anodes & Do not use more than 1 oz tint per quart. In open flat areas, layer passes. 0000022629 00000 n The mid point of 1.5% is most common. Software, Digital TotalBoat-488420 Marine Gelcoat for Boat Building, Repair and Composite 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. TIP: If using a wooden mixing stick, place the stick in the resin before adding catalyst so the wood doesn't absorb the catalyst. Then scale up!! Mix the polyester resin with a catalyst named methyl ethyl ketone peroxide (MEKP) to begin curing. If you brush on the gel coat, make sure to use a solvent resistant brush. PINT (16OZ) 1/4 OUNCE In temperatures below 70 degrees, the paraffin can QUART (32OZ)1/2 OUNCEsolidify in the bottle. When mixing MEKP with resin, take care as a violent mixing action can splash it out of the mixing container. Deals, Trailering of Gelcoat w/o Wax = 1/4 oz. Ropes, Boat Dollies, SportsStuff Great Big For example, four drops of hardener will be 1 percent of 1 ounce of resin. 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. Ft. @ 10 Mils), Catalyst Concentration by CC (Volume of Catalysts to be Used with Polyester The car polishers wont work if theyre spinning too slowly, so you want to check the speed of the spin. 0000003502 00000 n Pot life at 75F is approximately ten minutes. Gelcoat and MEKP ratio issue - Dedicated To The Smallest Of Skiffs of wax; 32 oz. Instruments, VHF Radios & (1) One Gallon Polyester Resin = 9.2 pounds (2) Specific Gravity MEKP = 1.13 (3) Drop from 1 oz. This further assures that no uncatalyzed material is clinging to the sides of the pot. Failing to do so will result in the resin not hardening as it should. of wax; and 1 gal. 1 TBS = 1/2 oz. Racks, Fish Finders, Sounders 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. 0000010798 00000 n MEKP is hazardous. The Ideal range is 1.8% @ 77F (approximately 12 drops per ounce of gelcoat.) Here is an Old School MEKP Chart for Download if you prefer. We suggest a thickness of 18-20 mils to properly cure. Professionals, Boat Restoration, Building, and Hull Repair, Shop 0000001279 00000 n It will take a minimum of two coats of gelcoat if you are changing colors. The thickness of the matchbook cover is approximately 18 mil. %%EOF How many drops of MEKP is 1 oz of gelcoat? - AnswersAll Finish/topcoat with. rQ{.Z7. i[wk. Quantity. Refer to the catalyst chart located on the product page for the gelcoat you are using or follow the label guidelines. Remove seals from the edges of parts or fittings when doing a repair around that part or fitting. Boat Gel Coat - Spectrum Color, Pumps and (2% of MEKP for colder temperatures.) Tops, Other JavaScript is disabled. Using 38 inch wide cloth, Mr. Smith needs three 10 ft. pieces. Add 2% MEKP catalyst, by volume: 14-16 drops per ounce, or 2 teaspoons per pint. The cabin top is 9 feet wide by 10 feet long (910=90 square feet). Do you sell MEKP? Trailer Winches, Shop Measure ArtResin in precisely equal amounts by volume: Adding too much of either resin or hardener will alter the chemical reaction and the mixture will not cure properly. 0000018269 00000 n Storage Thank you! 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. 06/2024 at the best online prices at eBay! PDF MEKP Ratio Chart Polyester Resin - Silpak UV inhibitor is added to increase weathering stability. Deals, Camping & RV Since manufacturer specs change often due to formula updates be sure to follow the most recent recommendations from the technical data sheets. Only catalyze slightly more than needed. Boarding, Paddles & If using a wood mixing stick, place the stick in resin before adding catalyst so the wood doesnt absorb catalyst. 6.1 Cleaning Surface; 6.2 Sanding the Surface; 6.3 Apply Gelcoat; 6.4 Technique 1: Renewal of the Gelcoat with Laminate; 6.5 Technique 2: Renewal of the Gelcoat . Covers, Boat Seat Spray: Airless or Conventional: 2.0-2.5 orifice tip. I want to say poly resin needs 10 drops of MEKP per 1 oz. Deals, Boat Seats (#69-A) unit can be shipped via standard ground service without hazard charges within the 48 contiguous United States. Sand it down with 80 grit sandpaper until it's flush with the surface of the fiberglass. Covers, Boat Shrink Wrap Systems, Marine Plumbing Chart for poly resin cure times vs. temp vs. MEKP? Ounces (Volume RESIN, Quarts. 1 Oz is recommended for 1 Quart of Gel Coat or Resin. Deals, Dealer 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. 0000012247 00000 n Choose a shady location or an overcast day. Registered User. 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. Maintenance, Boat Cleaners & 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. 0000001926 00000 n Again I'm not a fan of "drops" because its super subjective. The weight of MEKP 925 is 1.125 grams per cc. The two componants when mixed will react with each other to crosslink and polymerise into a solid plastic. Grande Mastere Dreade Snag's spellchecker 20,728 5,208 3026'36.2"N 8832'13.8"W You should also feather the surrounding area of the gel coat repair with 220/330. Is pepperoni high in sodium? Upgrade the Premium MEKP Catalyst Calculator by WEIGHT EXCLUSIVELY offered by Vernese Customs. B. TotalBoat Gelcoat for Marine RV Pools and More - Jamestown Distributors Let the polyester filler cure until material is firm and tack free, about 10 minutes. Under- or over-catalyzed gel coat will cure slower and look faded or chalky. 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 PDF Bondo fiberglass resin hardener ratio chart 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. Let's hope this works this time! PDF GEL COAT REPAIR - Marine Coat One Always consider the width of the cloth plus an overlap allowance at the seams. You want to use a buffer that turns 1600-3000 RPM. . Parts, Wash Down trailer At this point, the repair is ready to prep and spray/brush with gelcoat. You will develop a repeatable and scalable process. You will have between 5 and 10 minutes (longer in cold weather) to apply the gel to the mould. However, I can NOT guarantee you will achieve the same results as I would. Resins MEKP - Number of cc per Volume), Catalyst Concentration by There are 2 thinners that are recommended by the manufacturer when spraying gelcoat: Patch Booster, and Duratec. Epoxy resins come in two seperate componants. This is about polyester gel with MEKP hardener. Generally, mix one-pint batches. Holders, Cabin Accessories & The normal ration of resin to catalyst is just over 1% but should not go over 2.5%. Gel Coat Application - Sea Hawk Paints 0000006855 00000 n 0000017788 00000 n Downs, Couplers, Mounts, Motivational and inspirational sources to all those parents to enjoy life with their babies, Home FAQ How Many Drops Of Mekp Is 1 Oz Of Gelcoat. cc = cubic centimeter. Gel Coat Additives: You should also determine which additives you will use with your gelcoat application. The warmer the temperature the less MEKp you would to activate the gelcoat/resin. Adding more of less of the catalyst agent will speed up or slow down the curing time for the resin. There are simply too many variables. As soon as you are done spraying, clean your sprayer fully with acetone. Or UPGRADE! Can you mix resin in paper cups? Mixing SMALL amounts of gel [Archive] - Scream And Fly Powerboat and for Sale, Buy A Seats, Pontoon Boat Seats & For most work, a 3 or 4 wide brush will suffice. ENCLOSED: Dropper bottle that will yield the exact ratios referenced on this chart when mixing small amounts. Why do I need to add MEKP to polyester resin or gelcoat? How much do I We recommend 1.5% 2.0 % by volume. It is typically used between 1.25% to 1.75% (1 2/3 ounce to 2 1/3 ounces per gallon). How to Mix Polyester Resin | eHow 100 ml at 1.5% is 1.5ml MEPK etc. Approximately eight drops of MEKP to each 1/2oz. Gel Coat Application Guide - How to apply gelcoat correctly Hardware, Boat Seat The standard ratio is 1 oz. Free shipping for many products! Have an abort strategy!! First, decide if you need one or two coats of gelcoat. Outdoor Hub, LLC (d/b/a Carbon Media Group), 30800 Telegraph Rd, Suite 1921, Bingham Farms, MI 48025 USA. The cc and oz values in the chart have been converted from weights of MEKP to volumes of MEKP. Rafts, Paddle Are there different types of gelcoat? - TimesMojo 0000000872 00000 n Gelcoat Repair Part 2: Mixing and Application. Gelcoat should not be applied over paint, wood, metal, or concrete. 30 seconds, ensuring to scrape bottom and edges of the mixing container. How to properly measure MEKP for your polyester resin, gelcoat and more DO NOT WORK IN DIRECT SUNLIGHT -Choose a shady location or an overcast day. Gelcoat will not fully cure without adding a surfacing agent or wax additive sanding aid. %PDF-1.4 % 0000007919 00000 n See this article for more information: How to Apply Gelcoat by Brush and Roller. 27. Note: All gel coats and resins from the Bottom Paint Store include MEKp with the applicable size of gelcoat/resin. ACCOUNT, Find Keeping good notes will help you build a database of initiator levels for temperatures that you encounter frequently. Motors, Fishing Downriggers & Tables, Minn Kota Can I spray gelcoat with an airless sprayer? Ski, Wakeboard 1 GALLON 2 OUNCES That's the problem. MEKP Chart and Calculators. Try for FREE! - Vernese Customs startxref List Name. 0000009357 00000 n xref For use as a final coat over fiberglass layups or for repairs, this gelcoat cures to a hard, glossy surface. Take steps to cover and protect the rest of the boat before starting. 0000015038 00000 n Steel Blue is a dye youre going to wipe on or you can use the blue dye spray. How many drops of Polyener resin are in an ounce of hardener? Can you apply second coat of gelcoat? Marine Coat One Iso/Npg Marine Gel Coat White with Wax with MEKP Stir well. 0000023316 00000 n With the new ratio of .6 CC per oz of gelcoat everything took perfect. Accessories, Pontoon Bimini Come join the discussion about engines, modifications, classifieds, troubleshooting, fishing, boating, poles, maintenance, and more! Need help mixing gel coat | Boating Forum - iboats Boating Forums We suggest 1-1/4% to 1-1/2% by volume, i.e. Turning brown or even worse your mixing jar catching on fire. Lights, Boat Trailer If you add too much then you risk it burning. Covers, Boat Wiring & The MEKP Calculators by WEIGHT are Dead-On when it comes to precision and Superior to any Catalyst Chart. They are flexible enough to make pouring easy. Mix small batches at a time since too much MEKP will result in the hardening of the gelcoat way too fast! Determine the Existing Surface: First thing you want to do is look at the surface on which you want gelcoat applied. Varnish, Marine Adhesives, Clean the fiberglass surface with ajax or comet and water. Used as the hardener (activator) in Gel Coats and Resins. This is about 1% which is tuned for 80 degrees or higher. You will need to thin the gelcoat for it to run through the spray gun. The minimum recommendation from Dow is 1% MEKP to resin by weight, with a maximum of 2.5%. PDF GELCOAT REPAIR GUIDELINE NCINSTGCGD-v 2 - Multi-Tech Products . Apply gel coat to mold surface. When spraying to a radius, flow the gelcoat to the tape. At 70 degrees, you get 15 minutes, but at 90 degrees, you only get 5 minutes. Prepping the Surface: Remove rails, cleats, louvers, snaps, striping tape, etc. But I believe it to be 12 drops of hardener per ounce of gelcoat. Clean the repair area and all tools with acetone prior to application. Once the fill area is level or contoured to the desired shape, sand with 100 grit paper to remove the course scratches from 40 or 80 grit. Ventilation, Interior & Cabin How? Manager at store told me to run 10-12 drops per oz of gelcoat I mix up. Transom Handles, Life Jackets & JavaScript is disabled. #3. 38 in. Compound and polish with Aquabuff 2000 then happy a wax such as Collinite 925 UV for protection. I genuinely do care about ALL my customers and hope everyone of you achieve the absolute best results possible. 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. 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. 0000018032 00000 n However, if you have opacity problems two coats may be necessary with a light sanding between coats. 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. 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. . Once the coating (gelcoat) has cured, it should be block sanded using 250 wet grit paper to remove all brush marks and high spots. 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. 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. 7. Avoid re-brushing as this could remove the waxy surface additive. Do you need to add catalyst to resin? 2Oz is recommended for 1Gallon of Gel Coat or Resin. Category, View