Review on Ergonomic Multi-Purpose Sanders: The Ultimate Prepping Weapons by Kirk Womack

Worth every penny, buy a few, paper lasts much longer when it's actually flat so multiple pads reduce paper changes. I have 5, four of this order and the original which I bought on my own. Without a doubt this is the best block I have ever used. Make sure you make a sandpaper cutter as it can be difficult to cut the paper along the long edge. Two pieces of MDF with an offset and a hacksaw blade bolted on work great, google the images.