Description
The West System A Pack 105/207 stands out as an excellent two-part epoxy kit, perfect for those who seek a flawless, glass-like finish along with impressive moisture resistance. Unlike the typical West System hardeners like the 205 and 206, which may cure with a slight amber tint, the specially designed 207 Hardener guarantees clarity. This makes it ideal for natural wood finishes, carbon fibre laminating, and other projects that require clear fibreglass cloth.
One of the standout features of the 207 is that it will not create an oily amine blush in humid conditions, which is a common issue with standard epoxies. This allows you to apply up to three coats in a single day without the hassle of washing or sanding between coats.
Additionally, it includes an ultraviolet inhibitor that provides protection for the underlying wood or fabric against sun damage. However, for surfaces that will be exposed to the elements over the long term, it is still advisable to top-coat with a high-quality UV-filtering varnish or polyurethane.
When applied in thin films, it rolls out smoothly and finishes cleanly with a foam brush, which significantly cuts down on the amount of finish-sanding needed.
When using calibrated West System Mini Pumps, it's essential to opt for the 303 Special Ratio Pump Set. The standard 301 Mini Pumps are designed for a 5:1 ratio, meant for use with 205 or 206 hardeners. Using them may result in the incorrect mix ratio, leading to sticky epoxy or complete failure of the mix.
If you're mixing by volume without a pump, be sure to measure accurately into a straight-sided graduated mixing cup, maintaining a precise ratio of 3 parts 105 Resin to 1 part 207 Hardener.
One of the standout features of the 207 is that it will not create an oily amine blush in humid conditions, which is a common issue with standard epoxies. This allows you to apply up to three coats in a single day without the hassle of washing or sanding between coats.
Additionally, it includes an ultraviolet inhibitor that provides protection for the underlying wood or fabric against sun damage. However, for surfaces that will be exposed to the elements over the long term, it is still advisable to top-coat with a high-quality UV-filtering varnish or polyurethane.
When applied in thin films, it rolls out smoothly and finishes cleanly with a foam brush, which significantly cuts down on the amount of finish-sanding needed.
- Total Mixed Weight: 1.29 Kg
- Components: 1.0 kg of 105 Epoxy Resin/0.29 kg of 207 Special Clear Hardener
- Mix Ratio by Volume: 3:1 (3 parts resin to 1 part hardener)
- Mix Ratio by Weight: 3.64:1 (acceptable range of 3.41:1 to 4.16:1)
- Pot Life (at 22 Degree C / 72 Degree F): 22 to 26 minutes
- Working Time (Thin Film): 110 to 120 minutes
- Cure to Solid (Thin Film): 10 to 15 hours
- Minimum Working Temp: 16 Degree C (60 Degree F)
When using calibrated West System Mini Pumps, it's essential to opt for the 303 Special Ratio Pump Set. The standard 301 Mini Pumps are designed for a 5:1 ratio, meant for use with 205 or 206 hardeners. Using them may result in the incorrect mix ratio, leading to sticky epoxy or complete failure of the mix.
If you're mixing by volume without a pump, be sure to measure accurately into a straight-sided graduated mixing cup, maintaining a precise ratio of 3 parts 105 Resin to 1 part 207 Hardener.