207 Special Clear Hardener was especially developed for use with West System 105 resin in coating applications where an exceptionally clear moisture-resistant natural wood finish is desired.
Improved formula chemistry allows for true clear cure with same UV stability without amber tint. An ultraviolet inhibiting additive improves the resistance of a West System 105/207 mixture to sunlight but the cured epoxy surface will still require the additional protection of a quality UV-filtering varnish.
207 is designed to self level for smooth finishes and to wet-out and bond fabrics. Although it provides good physical properties for general bonding applications, it is more difficult to thicken and less cost effective for this purpose than 205 or 206 hardeners. It's also used for laminating veneers where bleed through at joints may be exposed to sunlight.
The item was added to your wishlist.
The item was added to your shop cart.
*********CANNOT BE SHIPPED BY AIR*********
Mix Ratio, Resin:Hardener
3:1 by volume (3.5:1 by weight)
Pot life at 72 F (22 C)
22 to 27 minutes
Cure to a solid state
9 to 12 hours
Cure to maximum strength
4 to 7 days
Minimum recommended temperature
60 F (16 C)
300, 306-23 or 309-3
Excellent long-term clarity due to improved chemistry and stabilization with UV filters
Superior blush resistance
Extended recoating time
Excellent fiberglass wet out characteristics
Ideal viscosity for buildup coats
Excellent paint and varnish compatibility
Excellent physical properties for bonding
Hi there, can anyone tell me if 207 would be a better hardner than 205 for inlaying turquoise into a maple table top? Or what the difference between the two might be? Thank you!
The 207 is clear, the 205 can be slightly amber in color.
JD Tech Team
I need to cover a bar top. Will the 105 and 207 products work for this application?
Yes, if the bar is outside, it will need to receive some type of UV protection.
JD Tech Team
Does West 207 clear hardener with 105 resin give off an amine blush on the surface?What is the re-coat time window before sanding is required?
West System Epoxy can have an amine blush. Always best to wash with water after it cures. Recoat time is as soon as it gets tacky, cure in 9 - 12 hours and would require sanding.
what pump to use with .66 pt container ? Thanks, Frank
WEST System 300 Mini Pump Set WSY-300Cap sizes on the pump set do not allow you to use the wrong pump on the wrong container.
EILEEN A RICHARD
The scale I referred to in my earlier response is the West Systems #320 Small-Batch Epoxy Scale.(< a href="http://www.jamestowndistributors.com/userportal/show_product.do?pid=6558" target="_blank">http://www.jamestowndistributors.com/userportal/show_product.do?pid=6558< /a>)
300 mini pump set from west system
I have never used a container that small, so I don't know. I expect that if you are buying such a small container that you are also using very small amounts at a time. WEST Systems have a scale for use in this situation.
I am looking for an adhesive to bond a pea gravel patio, any suggestions?
West System 207 clear hardener is used with West System epoxy resin to provide a clear resin for fiberglass. Although when mixed and supplemented with additives it can make an effective adhesive, it would, in my opinion, be inappropriate for use with pea gravel for a patio because 1). it would be cost prohibitive; 2). the finished patio would need numerous and repeated coats of a good (i.e. expensive) UV protective varnish otherwise the clear epoxy will turn opaque orange and deteriorate in weather; 3)unless working in small batches you'd have about 15 minutes to mix with pea gravel, pour in to patio frame and level before it set up, otherwise you have to pull up the whole mess and start again; 4). plus you couldn't work it in sunshine or other certain other weather conditions without problems. There are other products specifically designed for patios (and much less expensive) and you can find those out online or from a professional patio landscaper.
Never done that, but epoxy is certainly an option, depending on your application. You might want to also look at the adhesive matrix used in making Terrazzo flooring, which is basically a bunch of colored pebbles mushed together in a paste and then polished to a shine to make a smooth multicolored floor. That's all I got.
this is not the product to use. I would recommend a trowel able polyurethane adhesive.
Can this product be used for on rock walls?
This works great on wood, not sure about rock. As it is a glue it is possible. You would need to ask the manufacturer.
I would think so. It stays clear and doesn't yellow.
Do you mean for clearcoating the rock?If you want to do that, there are sealers made specifically to use on things like granite countertops that might be better.If you want to glue the rocks together, then you should probably find a specialty product. Paver adhesive might work.
What is "rock walls"? sorry, don't understand your question !
I used west system after it was dry I sanded looked great then I applied gel coat and gel coat never dried. The batch of gel coat used I put in other areas of my boat over existing gel coat and it dried fineIs gel coat not compatible with west system??ThanksSteve
Sorry to say that I don't have an answer to your question other than to say that I would suggest contacting the West System folks directly.
I put gelcoat over west system all the time. Make sure west systems is totally dry then sand. Make sure gelcoat has wax or covered with pva or duretic is added.
How long does 207 hardner take to cure? In inside room tempeture.
Curing times for epoxy vary depending on material temperature, room temperature, humidity and additives no matter what hardener you are using. 205 is quicker then 206 and 209. But then again the actual curing time is dependent on several variables. The warmer the better.Quoting from the Gougeon Brothers book on boat construction page 33, "Coatings of West Systems epoxy should be sufficiently cured for subsequent operations after 12 to 24 hours-usually overnight."The West System User Manual page 3 describes methods of controlling cure times. I have found these recommendations to be very helpful.You can access this via the internet site for West Systemif you didn't receive one with your epoxy resin.My experience with 207 hardener has been curing times of 4 to 6 hours indoors with the materials all being room temperature above 70F to overnight outdoors with the temps being in the 45F to 50F ranges.I suggest a trial batch to see what you get.Hope this helps and best of luck.
It takes longer than 205; my policy with epoxy, any kind, is to let cure overnight, the longer the better !
It's been several years since I used it on my canoe but as I remember about 24 hrs to touch - I think directions say about 30 days to fully cured.
Not exactly sure. I tend to work on boats in the evening, so it is almost 24 hours between applications. Always seems to have hardened within 24 hours.
l am a knife maker and l was thinking about making micarda so l would like to know if this product would work because of the clearness of the hardener ?
I had to google Micarta to see what it was. In our application we use this product to strengthen and weatherize wood on vintage automobiles. I can say it does dry very clear on wood.
We've had great luck with the 207 hardner. levels nicely, and is crystal clear.
I used the 207 on my redwood strip canoe. I used it to adhere fiberglass both on the interior and the exterior. I was very pleased with the results - pic is in latest WoodenBoat mag!!
I would think your best bet would be to try it out on some kind of a throw away sample of your knife making to find out. I would follow the steps involved precisely and subsequently you will know from the sample results for certain.
In my experience, this hardener does remain clear, so it should look good for your handles.
I had to watch a You tube video to see what micarta was. Yes, I think 207 would work great for laminating. I've used it as a clear coat on wood. Unlike other resins, it doesn't cloud up while curing in high humidity conditions. It has little or no UV protection, so it is not suitable for constant exposure to the sun. After about a year of storage, the part B of the resin turns a reddish color, but the mix ends up being only a slight tint of red.hope this helps.
I would like to think each of for your answers, l think this will help me a lot . you guys are the best, ask for a raise l think you deserve one.
thanks for your input
what size of hardener (207) do I need with the 105 1 Gal. epoxy?
207 is a 3 to 1 ratio hardener . You can buy any size , as long as you USE 3/1. All of your resin may not be used one one job.
Predictable cure rate and super looks on my cedar strip canoe.
Shipped fast and well packaged
Awesome product, but I did not necessarily like how it was packaged. JD placed a strip of packing tape over the cap which extended onto the sides, to keep the integrity of the cap I suppose so there was no chance of spillage, awesome idea. BUT, when I tried to remove the tape from the can, it removed the portion of the can that contained the safety information, basically ripped the manufacturer's label off in the process. The tape is see through enough so I did not try to remove and more but possibly next time use crystal clear tape.
Bull Run Canoes
Use this hardener when you will be clear coating and UV is a concern.
High Quality Product
This is an awesome product. I have yet to discover what can be done with it. Adding fillers and coloring agents, repairs to center boards, hulls and other plastic, fibreglass parts become an easy project. Due to wood out gassing, my current restoration ( Mahogany) project has been quite difficult. Attempts for help have been frustrating. Overall I am very happy with this product.
Couldn't unscrew lid
Thanks for a chance to respond, the 207 hardener wasn't able to open. The screw on lid was adhered to the "flange" and that was spinning around, there had been some leakage during shipping. I was unable to open the lid correctly, not sure if it was West Systems or Jamestown's doing but it made application harder. Finally just had to punch two holes in it and pour it out that way, wish I could of used my pumps though...It seemed I lost about a quarter of the can during transit. Other than that, you're all great. Talk soon.
Nice Finish, Be Aware of Product Change
I like this product for exterior use under a varnish. In my own tests it at least doubles the life of the varnish.Be aware that West is changing 207 from "Special Coating Hardener" to "Special Clear Hardener" under the same part number. The new product drops the Amber tint. Normally this isn't a big deal but if you are caught in the middle of a project and switch there can be a noticeable difference. It would be nice if West would have a tint additive if you wanted to continue using the Amber product (which is discontinued in production) much the same as Crystalac does with its warm dye toner, which changes the clear to traditional varnish tone.