how many drops of mekp is 1 oz of gelcoat

Use 6 drops of catalyst into 10ml of resin. Login, Boats Gel coat is a polyester resin and uses MEKP as the catalyst. At 70 degrees, you get 15 minutes, but at 90 degrees, you only get 5 minutes. It's important that the fiberglass is clean before you gelcoat over it. 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. Use a measuring cup rather than a syringe as it can be shot into the container and bounce back into the eyes. Oars, Wakeboard, Wakesurf & 38 in. 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. This is about 1% which is tuned for 80 degrees or higher. Telescopes, Covers and Check color thoroughly before applying. . Galley, Barbeque How much does a gallon of polyester resin weight? of wax; and 1 gal. 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. Then scale up!! 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. If you brush on the gel coat, make sure to use a solvent-resistant brush. Failing to do so will result in the resin not hardening as it should. Salto. They are flexible enough to make pouring easy. trailer On: July 7, 2022 Asked by: Rusty Daugherty Advertisement Always use 2% catalyst in Gelcoats. Hardware, Boat Man I hope its working. There are simply too many variables. If you brush on the gel coat, make sure to use a solvent resistant brush. 0000015094 00000 n Put the bottle in the sun or in front ofa lamp to reliquify. and gelcoat needs twice as much catalyist. Storage Check the temperature of the Gelcoat stock and insure that it is not below 70F. Measurements need to be exact so you can be confident the gelcoat is mixed properly before applying it to the surface. therefore by my calculations you'll need 10 drops. We sell. usually a material called surfacing agent (wax/styrene) or P V A. 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. The specific gravity of MEKP is 1.045. Catalyzing Gelcoat with MEKP: All gelcoat MUST be catalyzed with MEKP to cure. Professionals, Boat Restoration, Building, and Hull Repair, Shop TIP: You can also use these to calculate the correct amount of Wax Additives or other surfacing agents like Patch-Aid (3-4%) or as recommended. You will need to thin the gelcoat for it to run through the spray gun. 0000003229 00000 n xref 0000001050 00000 n Flow -coat on the other hand will have wax added, I suspect this might be what you have, (Gel-coat = no wax. If you dont see the blue dye again, you know youve sanded it all properly. This is a simple, easy way to see the thickness of your gelcoat. Rails, Marine Tools & Tool Lay on the gel coat in a heavy thickness (about 10 mils) using horizontal strokes, and working from top to bottom. I do suggest you start small. Anything below 60 degrees, and your gelcoat will not cure, but as you get warmer and warmer, your working time will decrease rapidly. 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. Can you mix resin in paper cups? 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Its a very small number. Zincs, Generator Determine the Existing Surface: First thing you want to do is look at the surface on which you want gelcoat applied. The ratio is dependant on air temperature, resin thickness, temperature of resin and mold. 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. Two Versions are available both Ounces and Pounds. All the essential pizza ingredients the crust, sauce, and cheese contain a lot of salt. While it might eventually cure as long as it doesn't freeze, gel coat doesn't like temperatures below 10*C. Stir well. How do you know how many ml's per drops you are getting? Below are some things to consider when trying to figure out how many drops of mekp is 1 oz of gelcoat. 1 ea contains 1 ea . A good practice is to pour the mixed gel coat from the mixing container into another container used for application. 0000000016 00000 n This will accurately measure the proper amount of catalyst. I genuinely do care about ALL my customers and hope everyone of you achieve the absolute best results possible. 30 seconds, ensuring to scrape bottom and edges of the mixing container. Usually 12 drops per ounce of gelcoat or 1.8% at 77F. 0000003263 00000 n At this point, the repair is ready to prep and spray/brush with gelcoat. Sanding between coats is not necessary unless a surfacing agent has been added to your gel coat. Systems, Marine Plumbing Rollers, Boat Trailer Use one or the other. That's really hard to weigh! 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. . For use as a final coat over fiberglass layups or for repairs, this gelcoat cures to a hard, glossy surface. Epoxies are much simpler to get a good ratio by weight. 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. 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 When you purchase through links on our site, we may earn an affiliate commission, which supports our community. We recommend 1.5% - 2.0 % by volume. Pumps, Livewell Aerator Pumps 1 Oz is recommended for 1 Quart of Gel Coat or Resin. Accessories, Boat 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. I used acetone and sanded off the old gelcoat. Unfilled resin can heat up to 300F resulting in cracking. In open flat areas, layer passes. 28.4cc Catalyst Amount by CC Catalyst Concentration by CC (Volume of Catalysts to be Used with Polyester Furniture, Boat Seat Pedestals & The mid point of 1.5% is most common. Usually 320 or 400 grit wet paper is sufficient for the initial sanding. Mixing thoroughly is just as important. Ounces (Volume Gel coats are often the exterior coating for composites parts, providing both the color and texture of the part. How much hardener is in a quart of resin? The application of gelcoat is pretty straightforward when you follow this guide. Ft. @ 10 Mils) 1 Fl. Each of these coats of gelcoat may involve several passes. All Gelcoats from the Bottom Paint Store comes with the MEKP catalyst but additional amounts can be purchased. 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. This time element is dependent on material temperature, room temperature, humidity, air movement, and catalyst concentration. Cups are are wax coated. This works on every single polyester product, not just the amazing products at totalboat. Ratio The ratio range for catalyst to resin is 1 to 2 percent hardener to the total volume of resin to be used. Maintenance, Pumps and How Many Drops Of MEKP Is 1 Oz Of Gelcoat? It needs to be handled with care. Mix the polyester resin with a catalyst named methyl ethyl ketone peroxide (MEKP) to begin curing. Darker colors need a little more catalyst for the same reaction, so you can catalyze up to 2%. If there is a trim color, you should have a narrow trim brush on hand. 1 What is Gelcoat? Maintenance, Fiberglass & Epoxy oops! Blocks, Marine & cloth = 2.84 or 3 pieces). Do not use more than 1 oz tint per quart. Adding more of less of the catalyst agent will speed up or slow down the curing time for the resin. 2Oz is recommended for 1Gallon of Gel Coat or Resin. Specific gravity MEK peroxide Downs, Couplers, Mounts, It is also needed with all gel coats. Resins MEKP - Number of cc per Volume), Catalyst Concentration by Looking for Feedback. 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. If using a wood mixing stick, place the stick in resin before adding catalyst so the wood doesnt absorb catalyst. Oz = fluid ounce . The higher the temperature, the less hardener you need. The ratio is on the hardener container. A forum community dedicated to Small Skiff owners and enthusiasts. For the Water Clear Casting Polyester Resin, this drops to 1.5% or 15ml for every 1kg. 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 ADD TO CART. 0000001279 00000 n See more 0000003945 00000 n Gelcoat should not be applied over paint, wood, metal, or concrete. Bilge Pumps, Shop We have all done it in a pinch, but there's a quicker way. It is only when mixed with an epoxy hardener that they can cure properly. Following this, it should be wet sanded with 320, 400, and 600 wet grit paper, buffed, polished and waxed. Mekp is too hard to measure by drops to me, so I use a syringe and do it by ml instead. However as at least one third of the gelcoat is particulate and not resin a mix of just 1.oo % should be fine. Method of Application: Next, determine if you are going to brush, roll or spray your gelcoat so you can prepare the gelcoat for application. However, neither they nor any Catalyst Chart can provide the exact ratio by WEIGHT. Gelcoat needs to be applied evenly. CREATE If it is in the 60's use 2.5 cc/ml or 50 drops for 2% MEKP. Handles, Life Jackets & Shop online or request a free catalog. 1 TBS = 1/2 oz. Charts & Apply the gelcoat using a brush or spray gun. 0000023316 00000 n It is typically used between 1.25% to 1.75% (1 2/3 ounce to 2 1/3 ounces per gallon). The Volumetric Calculators above are GREAT tools. Biminis, RV & Trailer Spraying gel coat is recommended for more accurate and consistent coverage. 0000002707 00000 n Sandable time: Depends on temperature, amount of catalyst, and mass of fairing compound. I always go way over the amount needed. 0000001899 00000 n Lighting, Marine Teak 2 Oz is recommended for 1 Gallon of Gel Coat or Resin. How many drops of Polyener resin are in an ounce of hardener? Use the spreader to add the . This is what I use- 60 to 65 degrees 3 %, 65 to 70 2.5%, 70 to 75 2%, 75 to 80 1.5%. MEKP speeds up the curing reaction of the polyester resin in these . CATALYST LARGE QUANTITY CHART Catalyst Concentration Resin Quantity Quart Gallon 5 Gallon 1/2% 1/16 oz 2/3 oz 1 1/3 oz 3/4% 1/4 oz 1 oz 5 oz 1% 1/3 oz 1 1/3 oz 6 2/3 oz 1 1/2% 1/2 oz 2 oz 10 oz CATALYST SMALL QUANTITY CHART CatalystConcentration Resin Quantity30 drops = 1 cc 2 oz 4 oz 8 oz 12 oz 16 oz 1/2 % 9 drops 18 We suggest a thickness of 18-20 mils to properly cure. xb`````Uc p7T,T30H3r``dHbecatXbuk(Y7jc>#`9in4; @Qn gg`(g ` 7 Go on line to gelcoat suppliers like Spectrum to confirm how many drops of mepk they recommend. Cable, Marine Batteries & Gelcoat can take as much a 2x the amount of MEKP as resin. Start typing to see products you are looking for. It has to be mixed at a 1:1 ratio with gelcoat. Take steps to cover and protect the rest of the boat before starting. On their own, epoxy resins are very stable fluids with relatively long shelf lives. One gallon will cure approximately 100 gallons of resin and 50 gallons of gelcoat. Gelcoat Repair Part 2: Mixing and Application. 0000007919 00000 n At 77F 1.8% MEKP will provide a gel time of 10-17 minutes. 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. Gelcoat will not fully cure without adding a surfacing agent or wax additive sanding aid. Protection, Dock Storage & We suggest a thickness of 18-20 mils to properly cure. HWnF}WK Use the recommended thinners/additives only which are listed on the gelcoats product page. Use 3M Abrasives for best results. For Dogs & Cats Free Shipping at the best online prices at eBay! . 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. Add 14 drops of liquid hardener per 1 oz. then sanding the gel coat down starting with 150, 220, 400 wet and 600 wet. There are 2 thinners that are recommended by the manufacturer when spraying gelcoat: Patch Booster, and Duratec. Mix in the MEKP at 1-1.5% and see if it works ok on a test panel. Approximately eight drops of MEKP to each 1/2oz. for Sale, Buy A Legal Disclaimer: User assumes all liability. Use a gelcoat thickness gauge to ensure proper thickness is achieved. Ditch the oz's and drop crap. Polyester resin is not nearly as forgiving as epoxy so you really gotta be on the money with the mix. Similarly,how many drops of hardener do i need? MEK, short for MEKP, is the Hardener or catalyst for Polyester Resin and Vinylester Resin Systems including Isothalic and Gelcoat. If adding pigment do so first and thoroughly stir in mixing well before adding catalyst, be careful not to under or over pigment. Measures Chart (Example - 1 Gallon = 231 Cubic Inches and 11 0 obj<> endobj 2. gelcoat needs a surface seal of some kind to inhibit air on the surface. your boats Gel Coat Match, Shop That's the problem. 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. Ideal range is 1.8% @ 77F. You have a work time of approximately 15 minutes. Ideal range is 1.8% @ 77F. You can measure the fluid ounce (s) of resin in a clean mixing cup. Gel time at 1.8% MEKP is 10-17 minutes. Catalyze your material so that it has a longer pot life. 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. d23 ?P90. Going up to 400, then 600, and eventually 800 grit sandpaper. Add a New List . Do not work in direct sunlight. Seats, Pontoon Boat Seats & 4|#8sReSSq"la;&2%9(HC}cL1eM4%1wEo Finishing your Gelcoat Application: If youre using our Professional Grade Exterior Gelcoat, youll be ready to sand and buff your freshly gelcoated surface after about 1- 3 hours. will cover 160 Sq. How much hardener should I use? Measure catalyst accurately. rQ{.Z7. i[wk. The amount of MEKp that you add to gelcoat and resin will vary with outside weather conditions. The Fora platform includes forum software by XenForo. xb```a`` Sealant, & startxref If you decide to Double or Triple the Volume to do a larger project or portion, the Calculator does the math for you! Mixing out of the above range will result in a weaker cured resin. Resin and Gelcoat differ in weight. Racks, Fish Finders, Sounders . For each teaspoon (1/6 oz) of blended gelcoat paste, add four drops of hardener. 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. Finish/topcoat with. More if temps <60> 80 or 90. of MEKP to 1 gallon of polyester resin. Pumps, Marine Pump Replacement Add the MEKP . Sign up for newsletter: You've just added this product to the cart: FIRST QUALITY FIBERGLASS MATERIALS AT A PRICE YOU CAN AFFORD! UV inhibitor is added to increase weathering stability. Example: 20-30 minutes @ 77F for a 100g mass catalyzed with 1% MEKP. 0000023586 00000 n <<2369ebe0f6fbc740aa2d803257e02535>]>> 0000006855 00000 n 1 GALLON 2 OUNCES Duratec is for a cosmetic high gloss finish. Kits, Boat Trailer 0000001127 00000 n You could also go to a local pharmacy such as CVS and ask for a few. & Circuit How many Oz is a slice of pizza? Outboards, Shop 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. Mix small batches at a time since too much MEKP will result in the hardening of the gelcoat way too fast! Resins that have Duratec in their name require a 2% mix ratio (2 2/3 ounces per gal *ThisItemShips From Florida ;Click to See Estimated Transit Times. 0000001553 00000 n We recommend 1.5% 2.0 % by volume. The secret to a good finish is to apply the gelcoat properly. Newbury, MA. WEIGHT The exact weight measurement for these ratios is slightly different from the volume ratio due to resin and hardener density. xbbb`b`` 2 You can use either a heavy-duty, reusable plastic cup or disposable paper cup for spraying gelcoat. (16 oz. Part # PBBR-.5 ( oz dropper) Mixing cup will give exact measurements for larger volumes in CC and ounce increments.

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