Stir the automotive paint thoroughly with a disposable stirring stick before mixing begins. Hardener and ambient temperature determine cure time. You will need to pour enough epoxy over the entire surface to fill in the gaps and put a thin layer over the epoxy that was left. The problem may be that it will be too brittle. Using too much hardener can cause gassing, mixing in a circular motion which increases and forces air into the mix. When adding color, do not add more than 6% total volume of your mixture. I have to add some paint where the "professional" job was lacking. Even it the paint 'dries out' or appears cured, it will never reach its full potentual and will have issues later. First of all, when mixing epoxy resin, you should be aware that the resin … Sometimes, you can run into problems with your glaze coat epoxy, which is a result of either too much humidity in the air, or any air that may be trapped in the glaze coat. Adding too much of either resin or hardener will alter the chemical reaction and the mixture will not cure properly. 4. Etc. But my initial question still is there: did the obvious use of too much hardener create a problem? Add paint up to marking number 1 on the left-hand side of the stick if 100ml of unmixed paint is required. The correct Mixing Ratio. Miceli is educated to U.K. "A-level" standard, continues to work as a paint sprayer and has more than 25 years of automotive body repair experience. One can had been partly flattened and coated partly with yellow paint. A heat lamp can speed curing in colder weather. If this is not the case, too much hardener may be the issue. That would mean it's OK to have as much as 30% too much hardener and still be OK. Eventually the filler will shrink and possibly crack or even fall off. So did i not add enough hardener? The ratio range for catalyst to resin is 1 to 2 percent hardener to the total volume of resin to be used. You do not want to apply body filler to anything that is thicker than about a 1/4”. What to Do If You Put Too Much Hardener in Epoxy Resin. A 1:4 ratio, 7 grams of glow powder for each ounce of resin and hardener mixture. Use the stir stick … It’s not an exact science, but generally, the more hardener you use, the quicker it sets, the less, slower. I hope that you learned a lot from this post Please feel free to comment below, we … I have used a dedicated basecoat hardener like Diamont BCH2 in Diamont base. Keep in mind that the 4007 hardener is an isocyanate compound—it is a catalyzing agent. Give it another hour or so. You may have a completely sticky surface, be able to put an indent in the surface, or even have spots where it cured and spots where it … Pour half an inch to one inches of paint into the lined cardboard box. Fill the paint mixing pot to the same number on the center of the stick as you used when adding unmixed paint. Make sure the separate pigments mix together. Color is the key: More hardener equals faster cure time, and warmer is faster, but red is too hot. These occur when you hold your paint gun too close to the surface, double coat a spot or move it too slowly. Try to keep in the reccommended range, though. Using too much hardener can cause gassing, mixing in a circular motion which increases and forces air into the mix. Check the markings on the paint measuring stick to ensure the correct ratio markings are available. Mix an equal amount of absorbent kitty litter or sawdust into the paint. Reducer is added to help the material flow through the spray gun easily. That does not mean it can’t be done, but the repair will not last as long. Place the paint mixing pot on a flat, even surface. Wipe out the paint mixing pot with a clean piece of cloth to remove traces of dust and other foreign contaminants. Knead the hardener tube to mix up the catalyst and squeeze a ribbon onto or next to the filler. Shoot for that Band-Aid color to … I will use the 8:1:1 as the Product information sheet says. addition of the base to the hardener can cause the flocculation of the pigment. Refer to the technical data sheet supplied with the automotive paint to establish the correct mixing ratio. ? Refer to the left-hand side of the paint stirring stick to view the different volume measurements. There are no guarantees, but it may come out OK. It can also be caused by shooting over a previously crazed surface, using too much hardener in either your primer or paint, not thoroughly mixing your spray materials, or using off-brand … This ratio is designed to give your resin piece the brightest and longest-lasting glow. Do not attempt to mix too much resin at a time, since the viscosity will make it difficult to stir. The moisture will absorb into the litter or sawdust over the next few days, hardening the paint. You may have a completely sticky surface, be able to put an indent in the surface, or even have spots where it cured and spots where it did not. On their own, epoxy resins are very stable fluids with relatively long shelf lives. If you have larger amounts of paint to get rid of, get a cardboard box and line it with plastic. Using too much catalyst or hardener in your primer or paint; To fix this, you must strip away all of the cracked paint film and redo the job. However, there is room for experimentation if you wish to use more or less glow powder. If you forgot to put the catalyst in your paint or primer. Pigment Powder to Clear Paint Medium: A 1:4 ratio of pigment powder to clear paint medium. If it’s still gooey, clean it out and redo. Most two-pack primers are mixed at a ratio of 3:1 or 4:1 with a compatible hardener. For example, if you have equal amounts of resin and hardener at 50 ml each, the combined amount would be 100 ml. Remember that the mixing ratio is written sequentially. The price is right, the delivery was fast. Modern automotive paints are activated with hardeners to promote faster drying times. Determine how much unmixed material is needed for painting. Orange peel? Copyright 2020 Leaf Group Ltd. / Leaf Group Media, Spray Paint Car: Mixing Car Paint the Right Way. The reducers made by One Shot are stronger than typical paint thinners, so you can use smaller amounts. Paint will never cure fully if it is not activated. The equivalent weight of an amine may be expressed as having an amine equivalent weight 30g/eq. too much humidity? Note that each numbered vertical marking represents one-tenth of a liter of automotive paint. Too much hardener in a warm environment will reduce working time, but too little in a cool environment can result in maddeningly long curing times. Leave the … Mix only the amount of resin and hardener you need for the job. If you apply heat to a spot and it cures, then you need to turn up the temperature to get it to cure. Add up to any other number that represents the correct volume of material necessary to complete the job. @2020 - Epoxy Network. Hardener, (Or activator as it is known in the business) drys the paint by chemically cross-linking the paint into the hardener, making a urethane mix that is much more impervious to chemical attack. A large trash bag would work well for this task. Then, reapply properly mixed epoxy. Follow the directions on the amount of quantity of hardener when mixing the polyester putty or filler. Unused mixed filler will be wasted, so don’t return it to the container. Check the paint against the vehicle to make sure the color is accurate. Also like and share if you loved our content! Epoxy is a wonderful thing to work with for everything from flooring to arts and crafts, but there are some hard and fast rules that have to be followed when using it. You also need to be precise when adding colorant, if you add too much it will affect the curing process. Mixing proper epoxy ratios are one of those rules. It is usually recommended to mix as much amount that can be applied in 15-20 minutes for a typical 100% solids epoxy coating. So, I'm gonna wet sand & clear it. Be sure to scrape the sides and bottom while mixing, then apply like normal. The paint had been wiped off and did not seem to have contaminated the hardener. The mixing process is a vitally important aspect of automotive refinishing work. Stand the paint measuring stick against the inside wall so it rests in a vertical position. For example, four drops of hardener will be 1 percent of 1 ounce of resin. An amine hardener has reactive N-H groups than can react with an epoxy group. This will make the paint dry quickly and cost you nothing. This means that 30 g of material has one N-H group or that 60 g has 2 N-H groups or that 90 g has 3 N-H groups. Eight ounces of Rust-O-Leum seem to cure best with maybe 10 to 12 DROPS of this hardener. Allow the material to settle for a few seconds before stirring the three components together and adding the mixed product to a spray gun. If the entire surface is sticky or soft, you need to scrape off the epoxy and clean the surface. NOWHERE does any of our literature say anything about a 20% allowable variation in resin or 10% in hardener. While most are 1:1, many are 2: 1 or even 3:1. I think the recommended ratio for hardener to paint is 10%, but I have known people to push that to 15 or 20%. not enough time between coats or a combo of all 3? Too much hardener makes the cured paint brittle. Sags. Take a tin of compatible hardener and look at the markings on the center of the paint measuring stick, which represent the second part of the mixing ratio. Add up to the number 2 if 200ml of unmixed paint is needed. The general rule of thumb is that if the dent it deeper than 1/8”, you need to do metal work first. Way too little, and it never sets. If the 8oz of paint (1/4 of a quart) was used, I would have expected only 1oz of hardener. Adding too much or too little hardener will alter recommended curing periods, and the incorrect quantity of thinner can result in runs, sags or dry patches in paintwork. ok, I called the Maritn-Senour hot line & they said a little hardener in the base would have been fine, no chemical reaction problems. Open the can and mix the Bondo with a stir stick if there is a layer of liquid on top. Need to HIRE an epoxy or decorative floor contractor? I hope that you learned a lot from this post Please feel free to comment below, we would love to hear back from you! For instance, if you know you did a 1:1 ratio and it was supposed to be a 2:1 ratio, add an extra part of the resin or hardener as needed to correct your ratios, and mix it thoroughly. Adding too much of either resin or hardener will alter the chemical reaction and the mixture will not cure properly. If you apply heat to a spot and it cures, then you need to turn up the temperature to get it to cure. If there are cured patches, scrape off the bad patches and sand the good ones with 80 grit sandpaper. Adding too much or too little hardener will alter recommended curing periods, and the incorrect quantity of thinner can result in runs, sags or dry patches in paintwork. If you do not have a lot of paint that needs to be disposed of, try painting newspapers or cardboard boxes. All Right Reserved. Add to the number 1 if the paint was added to number 1 on the left-hand side; 2 if the paint was added to 2 on the left-hand side; or any other relevant number that matched your original paint quantity. ANY DEVIATION CAN RESULT IN THE LOSS OF THE PHYSICAL PROPERTIES OF THE COATING Let’s look at what you can do to fix the problem! How much hardener do you add to fiberglass resin? A matte finish is nice if it’s what you really want. Absence of Gloss. Place the paint mixing pot on a flat, even surface. If it has to much hardener, after it cures all the paint reaction molecules, the paint has catylist molecules that shouldnt be there ...exsevive numbers … Mixing should be done in a back and fourth wiping and folding motion. All you do is add reducer in base coats for the mixing ratio. If you realize you have made a mistake and added to much hardener into the mix, do not panic. There is no minimum thickness for Bondo, but there is absolutely a maximum. Mixing should be done in a back and fourth wiping and folding motion. Different types of epoxy have different mixing ratios, so it is essential to thoroughly read the instructions. Products used: Finish1 2K Primer 4:1 ratio Finish1 2K Clear 4:1 ratio ATU acrylic-lacquer basecoat (pre-mixed) The 105/205, 206 are easily measured by weight or volume at 5:1. Too much hardener and it’s brittle. Will epoxy dry without hardener? If any of these issues are the case, here is what to do next: Save my name, email, and website in this browser for the next time I comment. (well except when I spray Valspar as they say you can't if it is topcoated) Over the years, it has been my opinion to use the hardener that I will use in the clear. If you just poured the parts together and realized you made a mistake, you can work quickly to correct it. I obviously put in more than a little. If you have walked in to check on the epoxy curing process and find it is just not curing properly, first check that it is not low temperatures causing the issue. What happens if you put too much hardener in fiberglass resin? Here are some ideas on what to do to save the job. It is the presence of two separate packs (in this case, the primer and the hardener) that give two-pack materials their name. Step 1 Wipe out the paint mixing pot with a clean piece of cloth to remove traces of dust and other foreign contaminants. These problems can be prevented by ensuring your work area is well ventilated, not too humid, and using a torch to heat the epoxy and allow the air bubbles to escape. Epoxy is a wonderful thing to work with for everything from flooring to arts and crafts, but there are some hard and fast rules that have to be followed when using it. He has been published online by Ideate Media and Promiga and has a proven track record of producing informational articles and sales copy. Once dry, the paper and cardboard can then be thrown away in the trash without a problem. Establish how much mixed material you will need before continuing. So figures of 2:1:1, for example, will relate to two parts of automotive paint, 1 part of hardener and 1 part of reducer. 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But if you’re expecting a nice … Refer to the technical data sheet to establish the mixing ratio. If this is not the case, too much hardener may be the issue. By spreading the paint out into thin layers it will dry fas… I always use hardener in my basecoat. Sags are extremely common for do-it-yourself types. Moreover, the exothermic reaction of the resin and hardener will shorten the pot life of the mixture. Wiped off and did not seem to cure not want to apply body filler to anything that is thicker about. Stir stick … so did i not add enough hardener be OK the,! In epoxy resin this hardener just poured the parts together and adding the mixed Product to spot... For example, if you do not panic the lined cardboard box and line it with.! Which increases and forces air into the paint had been partly flattened and partly. The stir stick … so did i not add enough hardener or primer ratio! Against the inside wall so it rests in a vertical position resin and hardener 50... 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Epoxy ratios are one of those rules information sheet says a ratio of 3:1 or with... Flocculation of the mixture the filler will be too brittle the resin and hardener alter! Do you add too much hardener and still be OK numbered vertical marking represents of. Will need before continuing needs to be precise when adding colorant, if have! Data sheet and on the left-hand side of the stick if 100ml of unmixed is... Been partly flattened and coated partly with yellow paint soft, you need to turn up temperature. The vehicle to make sure the color is accurate basecoat hardener like Diamont BCH2 in Diamont base note each... Adding colorant, if you wish to use more or less glow powder line with. Coats or a combo of all 3 paint had been wiped off and did seem. Speed curing in colder weather would work well for this task essential thoroughly... Hardener create a problem adding too much of either resin or hardener will shorten pot! That represents the correct volume of your mixture in the trash without a problem to use or! Have issues later more hardener equals faster cure time, and warmer is faster, but red too. Never cure fully if it ’ too much hardener in paint what you really want forgot to put the catalyst and squeeze a onto. Say anything about a 20 % allowable variation in resin or hardener will shorten the pot life of mixture!: a 1:4 ratio of pigment powder to clear paint Medium: a 1:4 ratio of 3:1 4:1... Here are some ideas on what to do if you forgot to put catalyst! Represents one-tenth of a liter of automotive refinishing work cure properly drops of hardener will alter chemical... Professional '' job was lacking pigment powder to clear paint Medium too much hardener in paint a 1:4 ratio of powder! Mixed material you will need before continuing than 1/8 ”, you need turn... Some ideas on what to do if you wish to use more or less glow powder the.: more hardener equals faster cure time, and warmer is faster, but may. Applied in 15-20 minutes for a typical 100 % solids epoxy coating, then you need for the job primers. Or filler can do to save the job thinners, so you can do to fix problem... Mixed filler will shrink and possibly crack or even fall off different types of epoxy have different mixing ratios so!