First project was to put in nine biscuits into two pieces of 1x12x48 pine for a top-bar beehive roof.  Maybe TMI, but they are at a 20* angle, which was problematic.  The first couple were fine so I went merrily along doing the other seven, the last of which was barely cutting the wood.  Had to make another half and start over.  The thumbwheel that locks the height is kinda small .. you may want to give it a little extra "umph" with pliers if you are going in at an angle rather than straight in.