Finding the right height is the hardest part. My router is installed on a desktop and the desktop cannot easily control the height. Using pine trimmings, I set each piece where it was sawn as needed. I then started with oak planks for the posts and rails of some of the cabinets I built. I read some negative reviews and was a little apprehensive about cutting through hard wood, but these chewed them through with no problem. I am very happy with my purchase.