Keep an Eye on Spark Flow While Grinding
In an ideal workshop, an ammeter is always present. But because we don’t live in an ideal world, we have to keep an eye on spark flow while grinding. Your eyes are also the best gauge of spark flow, even in precision jobs.
When using a power tool, you have to use all your senses to determine the work’s progress. This also applies to an angle grinder, a power tool with a highly abrasive capability.
By using your eyes and ears, you can adjust the amount of pressure placed on the material. You can also determine whether your angle of approach and contact duration are appropriate. Your experienced eye can tell all these partly by looking at the spark flow.
You can use an ammeter for keeping an eye on the spark flow. But your eyes and ears are still the better judge of this matter. You can practice on an angle grinder and observe the way expert grinders do it.