You’ve probably seen decorative joints in concrete before, from faux paving stones to circular medallions. You may have even wondered how they’re made. After all, saw blades only cut in straight lines, right?
According to Bob Harris of the Decorative Concrete Institute, not really.
Harris shows you how to cut both round joints and precise straight joints with walk-behind saws and angle grinders in this ConcreteNetwork.com video. (You may remember him from another ConcreteNetwork.com video that we featured two weeks ago on cutting control joints in concrete). Since this is a video about decorative concrete, there’s also a section on dyeing and acid staining. Watch it now, and let us know what you think in the comments section.
We’ve shown you how control joints in concrete work. Now we’re going to show you how to make them with cut-off saws.
You can make these cuts with walk-behind or early entry saws, of course. However, some surfaces like stamped and other decorative concretes demand smaller cut-off saws, according to Bob Harris of the Decorative Concrete Institute. This video from ConcreteNetwork.com shows you how to do cut control joints in these surfaces with these saws. Watch it now, and let us know what you think in the comments section.
Controlling respirable crystalline silica dust can prevent lung conditions like silicosis, COPD, tuberculosis, and lung cancer. The best way to do that, aside from wearing a respirator, is wet-cutting. However, wet-cutting has disadvantages: it’s messy and not suited for indoor cutting, not all saws are equipped for it, and cutting sites don’t always have access to water.
Using a vacuum to control dust is less preferable to wet-cutting, but it has the advantages of being easier to set up and clean up. This video from ConcreteNetwork.com showcases three kinds of vacuums, from Shop-Vac-type vacuums all the way to HEPA filter-equipped monsters. Watch it now, and let us know what you think in the comments section.
A lot of our customers use angle grinders, which is why we’re glad to see this safety video from Power Tool Institute, Inc. It has safety guidelines that will help you use your grinder safer, including:
- How to mount grinding wheels, cutting wheels, and other accessories
- Why wheel guards are important, and how you should mount and use them
- General safety precautions
- Personal protective equipment that you should wear
- How to use grinding and cutting wheels safely
- How to prevent kickback during grinding and cutting
- Safe sanding and wirebrushing techniques
Of course, one safety measure that this video doesn’t mention is to use the Safety Blade Grinder/Cutter, which won’t break or shatter during grinding or cutting. Just thought we’d throw that in there.
Courtesy of American Water Works Association
We’re going to the American Water Works Association‘s ACE14 convention in Boston, MA!
Be sure to visit us in the exhibitor’s hall from June 8 to 11 at the Boston Convention & Exhibition Center. We’ll be showing off our full line of diamond blades and grinders there, including the Ductile Iron Ring Saw Safety Blade. Here’s a preview of that blade.
Stay tuned here for more details!