Table of Contents
625 CC per ounce of gelcoat. 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.
How many drops of hardener do I need for gelcoat?
We recommend 1.5% – 2.0 % by volume. The Ideal range is 1.8% @ 77°F (approximately 12 drops per ounce of gelcoat.) If the gelcoat does not get enough catalyst it will not “kick” or begin to harden. Measurements need to be exact so you can be confident the gelcoat is mixed properly before applying it to the surface.
How many drops of resin are in an ounce of Mekp?
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 77°F (1. 0-2.2% MEKP based on the weight of the resin). Mix thoroughly for at least one minute and apply immediately after.
How many drops of hardener do I need?
tube of liquid hardener (MEK Peroxide) is sufficient to harden the entire contents of a gallon container. Add 14 drops of liquid hardener per 1 oz. of Fiberglass Resin (or for ¼ can of Fiberglass Resin, use ¼ tube of liquid hardener).
How much catalyst do I need for resin?
Generally speaking, for Polyester Resins, the mixing ratio is 2% i.e. 20ml for every 1kg of Resin in working conditions at room temperature. For the Water Clear Casting Polyester Resin, this drops to 1.5% or 15ml for every 1kg.
How long does gelcoat take to harden?
Most re-sprayed gel coat will cure in 2-4 hours, although overnight cures are ideal. Begin wet sanding with the finest grit that will remove orange peel in the re-sprayed area. This will avoid unnecessary sanding scratches.
How long do you wait between coats of gelcoat?
Apply gel coat to your part. Spraying gel coat is recommended for more accurate and consistent coverage. 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.
What happens if you put too much hardener in resin?
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.
How do you mix Mekp and gelcoat?
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.
How many drops of Polyener resin are in an ounce of hardener?
The ratio range for catalyst to resin is 1 to 2 percent hardener to the total volume of resin to be used. For example, four drops of hardener will be 1 percent of 1 ounce of resin. Adding more of less of the catalyst agent will speed up or slow down the curing time for the resin.
How much resin and hardener do I mix?
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. WEIGHT – The exact weight measurement for these ratios is slightly different from the volume ratio due to resin and hardener density.
Does resin need hardener?
On their own, epoxy resins are very stable fluids with relatively long shelf lives. It is only when mixed with an epoxy hardener that they can cure properly. 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.
How much does a gallon of polyester resin weight?
(1) One Gallon Polyester Resin = 9.2 pounds (2) Specific Gravity MEKP = 1.13 (3) Drop from 1 oz.
Do you need to add catalyst to resin?
Epoxy resins come in two seperate componants. No catalysts are needed. The two componants when mixed will react with each other to crosslink and polymerise into a solid plastic.
Is catalyst the same as hardener?
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.
Can you mix resin in paper cups?
50 Graduated Paper Cups Perfect for mixing small batches resin, paint, stain, epoxy from 1 to 3 ounces. Cups are are wax coated. They are sturdy and smooth on the inside to help with complete mixing. They are flexible enough to make pouring easy.
Can you spray gelcoat without thinner?
For spraying gelcoat our FGCI brand does not recommend thinning. If thinning is needed for gun/nozzle used then Patch Booster is a additive that will thin out gelcoat and not affect colors, such as acetone or styrene.
Can u paint over gelcoat?
If the gelcoat is in good condition with no major cracking or crazing, the job is relatively straightforward—clean and prepare the surface, apply an epoxy primer, sand the primer, remove the sanding residue and then apply the topcoat.
Can I use a roller to apply gelcoat?
If you want to roll on a gelcoat, be sure to use a 1/8 “or 1⁄4” solvent-resistant nap. Be sure not to use foam rollers because they tend to leave the bubbles. If you brush on the gel coat, make sure to use a solvent-resistant brush.
What is brushable gelcoat?
FGCI s Brushable Gelcoat is a unique proprietary product with excellent leveling characteristics, allowing application by paintbrush or roller without leaving brush marks or streaking. The ease of application makes this the perfect gelcoat for repairs and small parts production with no wax needed.
Do I want gelcoat with or without wax?
Gel coats are often the exterior coating for composites parts, providing both the color and texture of the part. The non-wax gelcoat will remain sticky untill the wax is added. The reason to use a non-wax is for putting on multiple coats without having to sand in between coats.
Should I use gelcoat with or without wax?
Gelcoat without wax is used when you have a different method selected to cure it. 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.
Can you put too much hardener in epoxy?
Adding too much of either resin or hardener will alter the chemical reaction and the mixture will not cure properly.
Why is my resin not hardening?
You need to stick to the 1:1 ratio that is measured by volume. Mixing thoroughly is just as important. Mix for a minimum of three minutes and make sure to scrape down the sides and the bottom of your container to get everything in. Failing to do so will result in the resin not hardening as it should.
Does tacky epoxy ever cure?
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. Resin starts to cure but does not go all the way completely. You should find a warmer spot to move your piece such as room or working office.
