Based on my observations, this tongue and groove router miller is a handy industrial and scientific tool suitable for cutting materials of different depths with precision .The cutting tool is very efficient in creating accurate cuts and its versatile design allows FOR it to be used on a wide range of materials. The only drawback is that the tool may clog or jam up if it is not cleaned after frequent use but this can be easily remedied by regular cleaning. This tool is a great investment for professionals and DIY enthusiasts alike..