GET STARTED
FREE PRINT & DIGITAL EDITIONS
Explore the latest Techniques & Tips articles
By Tom Pawlak — GBI Technical Advisor Above: One example of how to make shop tools quickly with G/5: Create a positioning fixture by laminating several layers of fabric over the part to be machined. Use mold release, tape or plastic wrap to protect the part. Glue the drill bushing in position with G/5 Five-Minute Adhesive. […]
For Paints and Primers by Joe Parker Above: Surface prep testing using ASTM D3359. This calls for a single-edged razor blade to score a pattern through the coating. Applying a strip of masking tape diagonally across the pattern, then pulling it slowly back over itself will reveal the relative degree of adhesion to the substrate […]
by Captain James R. Watson Above: For wet sanding epoxy, a typical grit sequence for smoothing an already flat surface would be 80 or 100 grit, then 150 or 180 grit, and finally 220 grit. Wet sanding with waterproof sandpaper is often the best approach to sanding cured epoxy. Wet sanding epoxy emoves any amine blush […]
By Tom Pawlak — GBI Technical Advisor We recently did adhesion testing to Corian and Wilsonart surfaces with WEST SYSTEM 105 Resin and 206 Hardener at the request of a composite panel manufacturer. Corian and Wilsonart are mineral filled acrylic panels that look like granite and are often used as countertop material in kitchens and offices. […]
“…you’d see things my way!” Are flexible epoxies better than stiff epoxies? How stiff is too stiff? How flexible is too flexible? By Bruce Niederer — GBI Technical Advisor Read the title of this article again. Could a statement be more confrontational? I sure didn’t think so when my ex-wife laid it on me! The issue of “flexible” […]
