And unless you want to spend the time dealing with the documents by hand or pay a company to do it for you, the most effective tool is a cross-cut shredder, which slices papers horizontally and ...

We especially like his big homemade 1.1 inch (30mm ... The blades are the shape you most often see in shredders, gear-like disks side-by-side with teeth cut from them that pull the plastic ...