207 SPECIAL COATING Hardener, was wondering who use it and how do you guy do the ratio of mixing.
Thanks
Most wil use a digital scale for weight % or a PE ratio % cup. I have a few left at the classroom that we got donated from RevChem but I’m not for sure who made them or where to buy them. I wonder if a 2 stroke Motorcylce oil to gas % ratio cup would be the same???
Looks like you mix it 3:1 by volume.
Product specific info:
West System 207 Special Coating Hardener
This hardener was especially developed for use with WEST SYSTEM Brand 105 Resin in coating applications where an exceptionally clear, moisture-resistant, natural wood finish is desired. Cures to a light amber color, similar to traditional spar varnishes. 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.
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)
Pumps required, (3:1 ratio) 303, 306-3 or 309-3
303 Special-Ratio Mini Pumps (3:1 Ratio)
Designed for convenient dispensing of WEST SYSTEM Brand 207 and 209 Special-ratio Hardeners. 303 Mini Pumps are calibrated to deliver the proper working ratio of 3 parts resin to 1 part hardener with one full pump stroke of resin for each one full pump stroke of hardener. The polypropylene pumps mount directly on the resin and hardener containers. 303-BC Group size “B” or “C” only, deliver approximately 1.4 oz. of resin/hardener per stroke.
I found that I did have one of those ratio cups here…
EZEMIXCUP is the brand?
PE container holds up to 1 litre, measured in pints and oz.
ratios: 2 to 1, 3 to 1 & 4 to 1
I got them from RevChem but I don’t think they carry them as it might have been from a buy out.
I just bought some Westsystems 207, it produces a slight amber / yellow look but it is supposed to be all weather. Does anyone now if the 206 or 209 produce a clear finish instead of the amber look of the 207?