The R105 resin is the base material for all of the west system range of epoxies. Using any of the hardener options it can be cured to form a high strength solid with excellent moisture resistance. It is designed to wet and bond to carbon, wood, fiberglass, reinforcing fabrics, metals and a variety of other materials.
Developed specifically for boat building, boat repairs and the marine industry, and internationally marketed for over 40 years, WEST SYSTEM epoxy is a versatile, high-quality, system that is easily modified for a wide range of coating and adhesive applications.
Mix ratio:
- H205 or H206: 5 parts resin to 1 part hardener by volume OR weight.
- H207 ‘special’ : 3 parts resin to 1 part hardener by volume. OR 3.5 parts resin to 1 part hardener by weight.
Download General Data Sheet here
Download Engineering Data Sheet here
New to working with epoxy? West system technical documents can be found here
WEST SYSTEM 301 dispensing pumps are designed for convenient and accurate metering of WEST SYSTEM resin and hardeners at a 5:1 ratio.
This means it will work with either the 205 or 206 hardener. (If you are using the 207 special hardener, this product will not work, as it requires a different ratio!)
For convenience, the pumps mount directly onto the resin and hardener containers and eliminate measuring by weight or volume.
Download Data Sheet here
New to working with epoxy? West system technical documents can be found here
Cab-O-Sil is a viscosity regulator, its the best epoxy additive if you are working on vertical surfaces, it will make your epoxy mix more thixotropic, meaning it won’t run. Don’t use in large amounts if you intend to sand it, its very hard to sand, (delivered from quartz). Makes a very good structural adhesive
It can also be added along with other fillers such as calcium carbonate to create a thixotropic, hard wearing, scratch resistant tooling gel coat.
Slowly apply to resin until desired consistency is acquired. Usually 1 part filler to 2 parts resin if using it alone.
Fine ground calcium carbonate when mixed with epoxy resin will give a very hard glossy coat ideal for tooling gelcoat.
Talc is good cheap filler, it is harder to sand than the west 411 and 410 fillers. It finishes to quite a hard surface finish (but not quite as hard as west 403 or calcium carbonate). It can be used by itself or with other fillers to add thixotropic qualities (wont run on vertical surfaces). Or even to make a very sticky glue.
Talc is also the main component of most body fillers. Added to resin for fairing and smoothing fiberglass laminations. When applied to resin it makes a smooth, creamy paste. Let it sit for an hour before adding hardener and using.
1L
When using talc alone add 2 parts filler to 1 part resin
