We recently used these to fasten a long vertical grain mahogany and cedar dovetail and they work great. The bottom line is of course that they apply a clamping force perpendicular to the surface to be bonded. The good thing is that the thickness of the different sizes overlaps slightly, so you can often double the number of clips available. There are some tricks to using them with blocks and guard strips if you don't want the little bite marks they leave behind.