Taking indoor ceilings as an example, it would take a lot of effort to drill holes with percussion drills. I used it to drill holes on the ceiling to install lights. As a result, if the lights were not installed, several drill bits were dropped; but I used them to hit the wall. This kind of situation will not occur, so the percussion drill is suitable for ordinary use in the family, but for the drilling staff, the hammer drill should be used.
When hitting a wall, the hammer drill will be better than the percussion drill. The key is that the structure and working principle of the two are different. I will not cite jargon and terminology to explain it. TX is not interested in this, so I just use it straightforwardly. To express in the words, the impact drill requires continuous application of force to make it rotate during the use of the hammer drill, and when using the hammer drill, it is necessary to apply a little force at the beginning to make the drill move forward actively.