MAS FLAG resin is a medium body epoxy specifically designed to be used as an adhesive and structural laminating foundation. It's thicker formula resists sagging in vertical applications. Medium viscosity works well with fillers when fairing putties, gluing slurries and filleting systems are required.
When mixed with medium hardener, FLAG is more reactive than low viscosity MAS resin. This keeps fillets and fairing compounds from slumping. FLAG resin can be sanded the next day when cured at 60 degrees F or warmer with Medium Hardener. Use with all MAS hardeners. Note: For filled applications, we recommend using MAS Medium Hardener.
We highly recommend this resin for general purpose gluing applications where wet-out of fiberglass is not a consideration, and for filleting and fairing.
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MAS FLAG epoxy is also suitable for fast wet-out of light to medium weight fabrics, laminating, gluing, barrier coating and cold molding.
Mix Ratio: 2:1 Resin to Hardener
Resin Viscosity: 3000-3400 cps
TG: 140 degrees F
Mixed Viscosity (2072/718) at 77 degrees F: 550-650 cps
Pot Life (30g batch) 15 minutes
Thin Film Set Time at 77 degrees F: 2 hours
Peak Exotherm: 360 degrees F
Tensile Strength: 7,500 psi
Tensile Elongation: 8 percent
Compressive Strength: 11,400 psi
Use protective gloves when working with this product. Use soap and water or white vinegar to clean your hands. Use Denatured Alcohol to clean your tools.
I've been using MAS epoxy to fiberglass my cedar strip kayak. I'm looking to buy another gallon to finish it up and noticed you don't recommend it for fiberglassing. How come?
Steph L, I do not recall commenting on MAS epoxy, but if I had issues with an epoxy it would be due to the produce blushing during curing. Most recently I have been using MAS non-blushing epoxy.
Not at all. It is great for fiberglassing. I like the fact that it is very thin (and can be thinned more) for penetration of wood, which is what I use it for. I don't glass regularly, but MAS would be fine for it. Love the product!
The flag epoxy is thicker and better suited for filling and filleting. We recommend using the Mas Low Viscosity Epoxy for fiberglass cloth which will wet out better.< a href="http://www.jamestowndistributors.com/userportal/show_product.do?pid=3440&familyName=MAS+Low+Viscosity+Epoxy+Resin" target="_blank">http://www.jamestowndistributors.com/userportal/show_product.do?pid=3440&familyName=MAS+Low+Viscosity+Epoxy+Resin< /a>
Go to the MAS website and look at the "How To" videos regarding fiberglass. Go to OffCenterHarbor website and view the 20 part video of making the Fox canoe, using MAS fiberglass. I don't know why anyone would not recommend MAS.
Can I use MAS Flag Epoxy to laminate Oak frames in a large wooden boat or is it to hard and not flexible enough., and if so what type of epoxy can I use.?
William, I have not used MAS for laminating yet sorry I can not speak dirrectly to your question. I have been sealing wood projects with it and am very pleased with the clear stable out come. The MAS I have is the medium viscousity. I suggest looking at the thicker product so that the joint is less likely be to dry.Steve,Good luck.
William, yes, you can use MAS epoxy resin to laminate oak frames on your boat. I use it to laminate the fore and aft stems on many cedar strip canoes, and the ash and red oak held its shape and is extremely strong. I see no problems with your intended use. The frames will be flexible enough to withstand the pounding they'll see. Good luck with your project.
im repairing the deck of a sailboat and will be laying down anti-skid pads on top of the repair area.will the Anti Skid fiber backing bond to the MAS resin if I use as an adhesive?
I would think it would, but I have never tried. What I have found is the biggest killer of most stiff materials is the differential in the expansion rates of the two materials. If it is not very close on expansion rate please use a flex type adhesive.
I love this stuff most user frendly epoxy out there it will bond to allmost any fiberglass surface if thourly cleaned and sanded with 80 grit paper I'm not familuer with the antiskid pads your talking about but if there not made of plastic and the epoxy can soak in to them they should stick but if there rubber or plastic forget about it remember to protect the epoxy from uv rays or it will break down
I have used epoxy to bond non-skid additives. Apply the epoxy and sprinkle on the grit. Paint over it. Worked better than any nonskid pad I have seen.
Epoxy resin is not a great adhesive for shiny smooth things (it will work fine for a while but will become brittle and separate after a while) but works great for porous and rough surfaces. Also it doesn't hold up in sunlight. If your adhesive will not be visible, I recommend a marine construction adhesive, available in tubes in hardware stores.
Yes, I agree it doesn't flex well.
We are building a 25 foot shanty boat with this product. I did some glass work on my 57 beetle floor pans.
Set times are very predictable...great as a glue and for sheething.
I use MAS for fiber glassing and for bonding urethane's for mold machining.
Love this product
We are redoing the decks on an Alberg 35. There was quite a bit of delamination and water damage. We have cut out bad areas and reglassed. Mas is extremely easy to mix and use. We have used over 5 gal so far.
this is good clean fun
It's easier to pour in large amounts and is forgiving when your measuring isn't right on.
Very usable odor-free product. Good pot life and strong too. Be careful with the resin pump though -- FLAG resin is thicker, so the pump return stroke is slower. Rushing the pump may reduce the amount of resin in the mix.
Old Town, Maine
This is a great product. We are rebuilding the deck on a Alberg 35. This product has a long working time when mixed with the slow hardner or medium hardner. It has no odor and can actually be cleaned up with white vinegar. It is sandable too.
Best wood repair
I have used MAS epoxies to build 2 wood kayaks and repair 4 sailboats. The kayak went down the Missouri River in 2003 and is still functional and beautiful today.
Great product, would buy again
Best barrier coat ever used, no extra labor to scuff and clean between coats.