Good quality tool that takes a bit of practice to get a result "not too bad". The holes are not always as perpendicular as one would like and I was sometimes forced to enlarge to straighten the pins that were a little crooked. What makes the swimming a little pin in the hole and not used much. I try to fill that void with glue and it seems to hold. It is quite easy to match 2 pieces of wood to assemble, the holes fall well opposite each other. if one wants to assemble 2 boards is not bad and convenient. We can not assemble pieces of sizes too small. I wanted to make a frame with 40mm wide wood pieces and 18 mm thickness but we need to do at least the width 60 mm to pass into the tool. Still, I think this tool still helped me for making my little furniture.