[quote=jlooby]I do it for non-significant structural work (this would include basic hull delam) in accord with West recommendations (previous link and other link below). Get both the surface and epoxy up to temp (heaters, hair dryer and even heat gun on structure if necessary noting not to get too hot if working with heat gun). Note this also opens any pores on surfaces which improves bonding and you can also warm/heat as layup cures. If working on beams or complex structures with significant layup steps I wait for warm weather.
https://www.westsystem.com/instruction-2/epoxy-basics/epoxy-chemistry/
James[/quote]
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