I'm sure some of you use the ToolClad magnetic sheets to help protect your cast iron surfaces from rust. I'm curious as to how you like them and if you think they are helping control the rust on your cast iron surfaces. I have looked around the internet and discovered that you can buy magnetic sheets 42" wide by the foot. In total it will be less expensive than buying a ToolClad sheet for each machine I have. But before I ordered the magnetic sheets I wanted to see if folks that have used them think they were worth the effort.