Metalworking Tips From Dynabrade Territory Managers
Metalworking basics help you acquire the skills that will make you more proficient in the field. Dynabrade’s territory managers have offered some advice on technique and other helpful tips they learned along the way.
Grinding Technique
“Right angle sander or grinder techniques – a forward motion (pushing away from operator) allows for a more aggressive material removal while a backward motion (pulling toward operator) allows for a less aggressive material removal. Depending on the application, this tip can help achieve the desired finish or rapid material removal.” – Scott Nolt
Reduce Gouging and Material Discoloration
“Motion is key! When grinding or sanding on metal it’s important to keep the wheel or disc in constant, smooth motion and avoid bearing down with heavy pressure or dwelling in one spot. Constant motion reduces the risk of gouging or material damage and helps prevent heat buildup that can cause discoloration. Pull the initial stroke toward you rather than pushing the tool away from your body. This greatly reduces the risk of gouging, especially when you are using a new abrasive wheel.” – Paul Snipes
Maintain Your Tools
“Proper maintenance of an air tool is a key proponent to the performance and longevity of the tool. A lot of timely maintenance is overlooked by customers. An air tool is an investment in the product the customer is producing.” – Ed Shirley
Get The Desired Finish
“Air tools and abrasives work as a team to deliver a desired finish on any material. Even the slightest deviation can have a negative consequence. Tool speed RPM, backing pad MOS (maximum operating speed), the type and quality of the abrasive as well as the quality of the backing pad are all points to consider when trying to achieve a desired type of finish. Lastly, the selection of PSA or hook/loop backing has an effect as well.” – Larry Speed
Backing Pad Matters
“Many end users forget about the backing pad. Backing pad quality & condition are similar to the characteristics of abrasive quality. The material makeup of the pad, thickness of the pad, the pad manufacturers quality processes, how the pad is attached to the hub are key factors that affect the finish. If a backing pad has gouges or cuts or is made cheaply this will negatively affect the performance of the tool and, in turn the finish of work piece. Backing pads should be inspected every day. If they are worn or the rivets are loosening, they should be replaced immediately. The choice of a PSA versus a hook & loop backing pad on orbital & gear driven air tools is important as well. Some metal finishers will not use a PSA pad for fear the adhesive will smear the workpiece. Hook & loop fans appreciate that they run cooler and are easy to apply to the backup pad.” – Larry Speed
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