PDF Publication Title:
Text from PDF Page: 039
stroke Resin stroke Hardener Dispense the proper proportions of resin and hardener into a clean plastic, metal or wax-free paper container. Don’t use glass or foam containers because of the potential dan- ger from exothermic heat buildup. DO NOT attempt to alter the cure time by altering the ratio. An accurate ratio is essential for a proper cure and full development of physical prop- erties. Dispensing with Mini pumps Most problems related to curing of the epoxy can be traced to the wrong ratio of resin and hardener. To simplify metering, we recommend using WEST SYSTEM Mini Pumps to dis- pense the resin and hardener. Mini Pumps are calibrated to deliver the proper working ra- tio of resin to hardener. Pump one full pump stroke of resin for each one full pump stroke of hardener. Depress each pump head fully and allow the head to come completely back to the top before beginning the next stroke (Figure 5-4). Partial strokes will give the wrong ratio. Read the pump in- structions before using pumps. Figure 5-4 Dispense the proper proportions of resin Figure 5-5 Stir resin and hardener together thoroughly, and hardener. at least one minute—longer in cooler temperatures. Before you use the first mixture on a project, verify the proper ratio according to the in- structions that come with the pumps. Recheck the ratio anytime you experience problems with curing. Dispensing without Mini Pumps—Weight/volume measure To measure 105 Resin and 205 or 206 Hardener by weight or volume, combine 5 parts resin with 1 part hardener. To measure 105 Resin and 207 or 209 Hardener by volume, combine 3 parts resin with 1 part hardener (by weight, 3.5 parts resin–1 part hardener). First time users—Begin with a small test batch to get the feel for the mixing and curing pro- cess before applying the mixture to your project. This will demonstrate the hardener's open time for the temperature you are working in and assure you that the resin/hardener ratio is metered properly. Mix small batches until you are confident of the mixture’s handling characteristics. Mixing Stir the two ingredients together thoroughly, at least one minute—longer in cooler temper- atures (Figure 5-5). To assure thorough mixing, scrape the sides and bottom of the pot as you mix. Use the flat end of the mixing stick to reach the inside corner of the pot. If you are using a power mixer, occasionally scrape the sides and corners of the mixing pot while mixing. If you are going to be using the mixture for coating, quickly pour it into a roller pan to ex- tend the open time. WARNING! Curing epoxy generates heat. Do not fill or cast layers of epoxy thicker than 1⁄2"—thinner if enclosed by foam or other insulated material. Several inches of mixed epoxy in a plastic mixing cup will generate enough heat to melt the cup if left to stand for its full Using WEST SYSTEM® Epoxy 36 Scrape corners 5PDF Image | Vacuum Bagging Techniques 002150
PDF Search Title:
Vacuum Bagging Techniques 002150Original File Name Searched:
VacuumBag-7th-Ed.pdfDIY PDF Search: Google It | Yahoo | Bing
5,000 BF Shipping Container Lumber Dry Kiln For Quality Lumber The 5,000 BF container kiln consists of one 40 foot high-cube aluminum shipping container... More Info
Shipping Container Lumber Dry Kilns by Global Energy Global Energy designed and developed the container kiln back in 1991. The purpose is to give access to portable sawmill owners, furniture makers, and small business the value added profit of dry kiln lumber and quality hardwoods... More Info
Vacuum Kiln Conversion Kit for Lumber and Wood Dry Kilns Convert your existing conventional dry kiln into a fast drying vacuum kiln. Similar to vacuum bagging in the boat building and aircraft industry, we have come up with a proprietary process which allows you to build a very simple vacuum kiln at a fraction of the price, and without the intensive conventional metal chamber structure... More Info
Vacuum Pump Cart System for Bagging Clamping Wood Drying and more Vacuum Cart with 2HP Pump and Dual Pistons with multiple multiplex vacuum ports and liquid reservoir... More Info
Vacuum Bagging Basics Vacuum bagging is a method of clamping, which has traditionally been used in the composites industry, but can also be used for vacuum drying materials, including wood products... More Info
CONTACT TEL: 608-238-6001 Email: greg@globalmicroturbine.com (Standard Web Page)